wget

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Display the version of Wget.

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Print a help message describing all of Wget's command-line options.

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Go to background immediately after startup. If no output file is specified via the -o, output is redirected to wget-log.

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Execute command as if it were a part of .wgetrc. A command thus invoked will be executed after the commands in .wgetrc, thus taking precedence over them. If you need to specify more than one wgetrc command, use multiple instances of -e.

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Log all messages to logfile. The messages are normally reported to standard error.

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Append to logfile. This is the same as -o, only it appends to logfile instead of overwriting the old log file. If logfile does not exist, a new file is created.

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Turn on debug output, meaning various information important to the developers of Wget if it does not work properly. Your system administrator may have chosen to compile Wget without debug support, in which case -d will not work. Please note that compiling with debug support is always safe---Wget compiled with the debug support will not print any debug info unless requested with -d.

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Turn off Wget's output.

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Turn on verbose output, with all the available data. The default output is verbose.

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Turn off verbose without being completely quiet (use -q for that), which means that error messages and basic information still get printed.

Output bandwidth as type. The only accepted value is bits.

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Read URLs from a local or external file. If - is specified as file, URLs are read from the standard input. (Use ./- to read from a file literally named -.) If this function is used, no URLs need be present on the command line. If there are URLs both on the command line and in an input file, those on the command lines will be the first ones to be retrieved. If --force-html is not specified, then file should consist of a series of URLs, one per line. However, if you specify --force-html, the document will be regarded as html. In that case you may have problems with relative links, which you can

Downloads files covered in local Metalink file. Metalink version 3 and 4 are supported.

Keeps downloaded Metalink's files with a bad hash. It appends .badhash to the name of Metalink's files which have a checksum mismatch, except without overwriting existing files.

Issues HTTP HEAD request instead of GET and extracts Metalink metadata from response headers. Then it switches to Metalink download. If no valid Metalink metadata is found, it falls back to ordinary HTTP download. Enables Content-Type: application/metalink4+xml files download/processing.

Set the Metalink application/metalink4+xml metaurl ordinal NUMBER. From 1 to the total number of "application/metalink4+xml" available. Specify 0 or inf to choose the first good one. Metaurls, such as those from a --metalink-over-http, may have been sorted by priority key's value; keep this in mind to choose the right NUMBER.

Set preferred location for Metalink resources. This has effect if multiple resources with same priority are available.

Enable use of file system's extended attributes to save the original URL and the Referer HTTP header value if used. Be aware that the URL might contain private information like access tokens or credentials.

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When input is read from a file, force it to be treated as an HTML file. This enables you to retrieve relative links from existing HTML files on your local disk, by adding "<base href="url">" to HTML, or using the --base command-line option.

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Resolves relative links using URL as the point of reference, when reading links from an HTML file specified via the -i/--input-file option (together with --force-html, or when the input file was fetched remotely from a server describing it as HTML). This is equivalent to the presence of a "BASE" tag in the HTML input file, with URL as the value for the "href" attribute. For instance, if you specify http://foo/bar/a.html for URL, and Wget reads ../baz/b.html from the input file, it would be resolved to http://foo/baz/b.html.

Specify the location of a startup file you wish to use instead of the default one(s). Use --no-config to disable reading of config files. If both --config and --no-config are given, --no-config is ignored.

Logs all URL rejections to logfile as comma separated values. The values include the reason of rejection, the URL and the parent URL it was found in.

When making client TCP/IP connections, bind to ADDRESS on the local machine. ADDRESS may be specified as a hostname or IP address. This option can be useful if your machine is bound to multiple IPs.

[libcares only] This address overrides the route for DNS requests. If you ever need to circumvent the standard settings from /etc/resolv.conf, this option together with --dns-servers is your friend. ADDRESS must be specified either as IPv4 or IPv6 address. Wget needs to be built with libcares for this option to be available.

[libcares only] The given address(es) override the standard nameserver addresses, e.g. as configured in /etc/resolv.conf. ADDRESSES may be specified either as IPv4 or IPv6 addresses, comma-separated. Wget needs to be built with libcares for this option to be available.

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Set number of tries to number. Specify 0 or inf for infinite retrying. The default is to retry 20 times, with the exception of fatal errors like "connection refused" or "not found" (404), which are not retried.

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The documents will not be written to the appropriate files, but all will be concatenated together and written to file. If - is used as file, documents will be printed to standard output, disabling link conversion. (Use ./- to print to a file literally named -.) Use of -O is not intended to mean simply "use the name file instead of the one in the URL;" rather, it is analogous to shell redirection: wget -O file http://foo is intended to work like wget -O - http://foo > file; file will be truncated immediately, and all downloaded content will be written there. For this reason, -N (for timestamp-c

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If a file is downloaded more than once in the same directory, Wget's behavior depends on a few options, including -nc. In certain cases, the local file will be clobbered, or overwritten, upon repeated download. In other cases it will be preserved. When running Wget without -N, -nc, -r, or -p, downloading the same file in the same directory will result in the original copy of file being preserved and the second copy being named file.1. If that file is downloaded yet again, the third copy will be named file.2, and so on. (This is also the behavior with -nd, even if -r or -p are in effect.) When

Before (over)writing a file, back up an existing file by adding a .1 suffix (_1 on VMS) to the file name. Such backup files are rotated to .2, .3, and so on, up to backups (and lost beyond that).

Do not try to obtain credentials from .netrc file. By default .netrc file is searched for credentials in case none have been passed on command line and authentication is required.

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Continue getting a partially-downloaded file. This is useful when you want to finish up a download started by a previous instance of Wget, or by another program. For instance: wget -c ftp://sunsite.doc.ic.ac.uk/ls-lR.Z If there is a file named ls-lR.Z in the current directory, Wget will assume that it is the first portion of the remote file, and will ask the server to continue the retrieval from an offset equal to the length of the local file. Note that you don't need to specify this option if you just want the current invocation of Wget to retry downloading a file should the connection be los

Start downloading at zero-based position OFFSET. Offset may be expressed in bytes, kilobytes with the `k' suffix, or megabytes with the `m' suffix, etc. --start-pos has higher precedence over --continue. When --start-pos and --continue are both specified, wget will emit a warning then proceed as if --continue was absent. Server support for continued download is required, otherwise --start-pos cannot help. See -c for details.

Select the type of the progress indicator you wish to use. Legal indicators are "dot" and "bar". The "bar" indicator is used by default. It draws an ASCII progress bar graphics (a.k.a "thermometer" display) indicating the status of retrieval. If the output is not a TTY, the "dot" bar will be used by default. Use --progress=dot to switch to the "dot" display. It traces the retrieval by printing dots on the screen, each dot representing a fixed amount of downloaded data. The progress type can also take one or more parameters. The parameters vary based on the type selected. Parameters to type are

Force wget to display the progress bar in any verbosity. By default, wget only displays the progress bar in verbose mode. One may however, want wget to display the progress bar on screen in conjunction with any other verbosity modes like --no-verbose or --quiet. This is often a desired a property when invoking wget to download several small/large files. In such a case, wget could simply be invoked with this parameter to get a much cleaner output on the screen. This option will also force the progress bar to be printed to stderr when used alongside the --output-file option.

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Turn on time-stamping.

Do not send If-Modified-Since header in -N mode. Send preliminary HEAD request instead. This has only effect in -N mode.

Don't set the local file's timestamp by the one on the server. By default, when a file is downloaded, its timestamps are set to match those from the remote file. This allows the use of --timestamping on subsequent invocations of wget. However, it is sometimes useful to base the local file's timestamp on when it was actually downloaded; for that purpose, the --no-use-server-timestamps option has been provided.

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Print the headers sent by HTTP servers and responses sent by FTP servers.

When invoked with this option, Wget will behave as a Web spider, which means that it will not download the pages, just check that they are there. For example, you can use Wget to check your bookmarks: wget --spider --force-html -i bookmarks.html This feature needs much more work for Wget to get close to the functionality of real web spiders.

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Set the network timeout to seconds seconds. This is equivalent to specifying --dns-timeout, --connect-timeout, and --read-timeout, all at the same time. When interacting with the network, Wget can check for timeout and abort the operation if it takes too long. This prevents anomalies like hanging reads and infinite connects. The only timeout enabled by default is a 900-second read timeout. Setting a timeout to 0 disables it altogether. Unless you know what you are doing, it is best not to change the default timeout settings. All timeout-related options accept decimal values, as well as subseco

Set the DNS lookup timeout to seconds seconds. DNS lookups that don't complete within the specified time will fail. By default, there is no timeout on DNS lookups, other than that implemented by system libraries.

Set the connect timeout to seconds seconds. TCP connections that take longer to establish will be aborted. By default, there is no connect timeout, other than that implemented by system libraries.

Set the read (and write) timeout to seconds seconds. The "time" of this timeout refers to idle time: if, at any point in the download, no data is received for more than the specified number of seconds, reading fails and the download is restarted. This option does not directly affect the duration of the entire download. Of course, the remote server may choose to terminate the connection sooner than this option requires. The default read timeout is 900 seconds.

Limit the download speed to amount bytes per second. Amount may be expressed in bytes, kilobytes with the k suffix, or megabytes with the m suffix. For example, --limit-rate=20k will limit the retrieval rate to 20KB/s. This is useful when, for whatever reason, you don't want Wget to consume the entire available bandwidth. This option allows the use of decimal numbers, usually in conjunction with power suffixes; for example, --limit-rate=2.5k is a legal value. Note that Wget implements the limiting by sleeping the appropriate amount of time after a network read that took less time than specifie

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Wait the specified number of seconds between the retrievals. Use of this option is recommended, as it lightens the server load by making the requests less frequent. Instead of in seconds, the time can be specified in minutes using the "m" suffix, in hours using "h" suffix, or in days using "d" suffix. Specifying a large value for this option is useful if the network or the destination host is down, so that Wget can wait long enough to reasonably expect the network error to be fixed before the retry. The waiting interval specified by this function is influenced by "--random-wait", which see.

If you don't want Wget to wait between every retrieval, but only between retries of failed downloads, you can use this option. Wget will use linear backoff, waiting 1 second after the first failure on a given file, then waiting 2 seconds after the second failure on that file, up to the maximum number of seconds you specify. By default, Wget will assume a value of 10 seconds.

Some web sites may perform log analysis to identify retrieval programs such as Wget by looking for statistically significant similarities in the time between requests. This option causes the time between requests to vary between 0.5 and 1.5 * wait seconds, where wait was specified using the --wait option, in order to mask Wget's presence from such analysis. A 2001 article in a publication devoted to development on a popular consumer platform provided code to perform this analysis on the fly. Its author suggested blocking at the class C address level to ensure automated retrieval programs were

Don't use proxies, even if the appropriate *_proxy environment variable is defined.

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Specify download quota for automatic retrievals. The value can be specified in bytes (default), kilobytes (with k suffix), or megabytes (with m suffix). Note that quota will never affect downloading a single file. So if you specify wget -Q10k https://example.com/ls-lR.gz, all of the ls-lR.gz will be downloaded. The same goes even when several URLs are specified on the command-line. The quota is checked only at the end of each downloaded file, so it will never result in a partially downloaded file. Thus you may safely type wget -Q2m -i sites---download will be aborted after the file that exhaus

Turn off caching of DNS lookups. Normally, Wget remembers the IP addresses it looked up from DNS so it doesn't have to repeatedly contact the DNS server for the same (typically small) set of hosts it retrieves from. This cache exists in memory only; a new Wget run will contact DNS again. However, it has been reported that in some situations it is not desirable to cache host names, even for the duration of a short-running application like Wget. With this option Wget issues a new DNS lookup (more precisely, a new call to "gethostbyname" or "getaddrinfo") each time it makes a new connection. Plea

Change which characters found in remote URLs must be escaped during generation of local filenames. Characters that are restricted by this option are escaped, i.e. replaced with %HH, where HH is the hexadecimal number that corresponds to the restricted character. This option may also be used to force all alphabetical cases to be either lower- or uppercase. By default, Wget escapes the characters that are not valid or safe as part of file names on your operating system, as well as control characters that are typically unprintable. This option is useful for changing these defaults, perhaps becaus

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Force connecting to IPv4 or IPv6 addresses. With --inet4-only or -4, Wget will only connect to IPv4 hosts, ignoring AAAA records in DNS, and refusing to connect to IPv6 addresses specified in URLs. Conversely, with --inet6-only or -6, Wget will only connect to IPv6 hosts and ignore A records and IPv4 addresses. Neither options should be needed normally. By default, an IPv6-aware Wget will use the address family specified by the host's DNS record. If the DNS responds with both IPv4 and IPv6 addresses, Wget will try them in sequence until it finds one it can connect to. (Also see "--prefer-famil

When given a choice of several addresses, connect to the addresses with specified address family first. The address order returned by DNS is used without change by default. This avoids spurious errors and connect attempts when accessing hosts that resolve to both IPv6 and IPv4 addresses from IPv4 networks. For example, www.kame.net resolves to 2001:200:0:8002:203:47ff:fea5:3085 and to 203.178.141.194. When the preferred family is "IPv4", the IPv4 address is used first; when the preferred family is "IPv6", the IPv6 address is used first; if the specified value is "none", the address order retur

Consider "connection refused" a transient error and try again. Normally Wget gives up on a URL when it is unable to connect to the site because failure to connect is taken as a sign that the server is not running at all and that retries would not help. This option is for mirroring unreliable sites whose servers tend to disappear for short periods of time.

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Specify the username user and password password for both FTP and HTTP file retrieval. These parameters can be overridden using the --ftp-user and --ftp-password options for FTP connections and the --http-user and --http-password options for HTTP connections.

Prompt for a password for each connection established. Cannot be specified when --password is being used, because they are mutually exclusive.

Prompt for a user and password using the specified command. If no command is specified then the command in the environment variable WGET_ASKPASS is used. If WGET_ASKPASS is not set then the command in the environment variable SSH_ASKPASS is used. You can set the default command for use-askpass in the .wgetrc. That setting may be overridden from the command line.

Turn off internationalized URI (IRI) support. Use --iri to turn it on. IRI support is activated by default. You can set the default state of IRI support using the "iri" command in .wgetrc. That setting may be overridden from the command line.

Force Wget to use encoding as the default system encoding. That affects how Wget converts URLs specified as arguments from locale to UTF-8 for IRI support. Wget use the function nl_langinfo() and then the "CHARSET" environment variable to get the locale. If it fails, ASCII is used. You can set the default local encoding using the "local_encoding" command in .wgetrc. That setting may be overridden from the command line.

Force Wget to use encoding as the default remote server encoding. That affects how Wget converts URIs found in files from remote encoding to UTF-8 during a recursive fetch. This options is only useful for IRI support, for the interpretation of non-ASCII characters. For HTTP, remote encoding can be found in HTTP "Content-Type" header and in HTML "Content-Type http-equiv" meta tag. You can set the default encoding using the "remoteencoding" command in .wgetrc. That setting may be overridden from the command line.

Force Wget to unlink file instead of clobbering existing file. This option is useful for downloading to the directory with hardlinks.

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Do not create a hierarchy of directories when retrieving recursively. With this option turned on, all files will get saved to the current directory, without clobbering (if a name shows up more than once, the filenames will get extensions .n).

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The opposite of -nd---create a hierarchy of directories, even if one would not have been created otherwise. E.g. wget -x http://fly.srk.fer.hr/robots.txt will save the downloaded file to fly.srk.fer.hr/robots.txt.

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Disable generation of host-prefixed directories. By default, invoking Wget with -r http://fly.srk.fer.hr/ will create a structure of directories beginning with fly.srk.fer.hr/. This option disables such behavior.

Use the protocol name as a directory component of local file names. For example, with this option, wget -r http://host will save to http/host/... rather than just to host/....

Ignore number directory components. This is useful for getting a fine-grained control over the directory where recursive retrieval will be saved. Take, for example, the directory at ftp://ftp.xemacs.org/pub/xemacs/. If you retrieve it with -r, it will be saved locally under ftp.xemacs.org/pub/xemacs/. While the -nH option can remove the ftp.xemacs.org/ part, you are still stuck with pub/xemacs. This is where --cut-dirs comes in handy; it makes Wget not "see" number remote directory components. Here are several examples of how --cut-dirs option works. No options -> ftp.xemacs.org/pub/xemacs/ -n

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Set directory prefix to prefix. The directory prefix is the directory where all other files and subdirectories will be saved to, i.e. the top of the retrieval tree. The default is . (the current directory).

Use name as the default file name when it isn't known (i.e., for URLs that end in a slash), instead of index.html.

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If a file of type application/xhtml+xml or text/html is downloaded and the URL does not end with the regexp \.[Hh][Tt][Mm][Ll]?, this option will cause the suffix .html to be appended to the local filename. This is useful, for instance, when you're mirroring a remote site that uses .asp pages, but you want the mirrored pages to be viewable on your stock Apache server. Another good use for this is when you're downloading CGI-generated materials. A URL like http://site.com/article.cgi?25 will be saved as article.cgi?25.html. Note that filenames changed in this way will be re-downloaded every tim

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Specify the username user and password password on an HTTP server. According to the type of the challenge, Wget will encode them using either the "basic" (insecure), the "digest", or the Windows "NTLM" authentication scheme. Another way to specify username and password is in the URL itself. Either method reveals your password to anyone who bothers to run "ps". To prevent the passwords from being seen, use the --use-askpass or store them in .wgetrc or .netrc, and make sure to protect those files from other users with "chmod". If the passwords are really important, do not leave them lying in tho

Turn off the "keep-alive" feature for HTTP downloads. Normally, Wget asks the server to keep the connection open so that, when you download more than one document from the same server, they get transferred over the same TCP connection. This saves time and at the same time reduces the load on the server. This option is useful when, for some reason, persistent (keep-alive) connections don't work for you, for example due to a server bug or due to the inability of server-side scripts to cope with the connections.

Disable server-side cache. In this case, Wget will send the remote server appropriate directives (Cache-Control: no-cache and Pragma: no-cache) to get the file from the remote service, rather than returning the cached version. This is especially useful for retrieving and flushing out-of-date documents on proxy servers. Caching is allowed by default.

Disable the use of cookies. Cookies are a mechanism for maintaining server-side state. The server sends the client a cookie using the "Set-Cookie" header, and the client responds with the same cookie upon further requests. Since cookies allow the server owners to keep track of visitors and for sites to exchange this information, some consider them a breach of privacy. The default is to use cookies; however, storing cookies is not on by default.

Load cookies from file before the first HTTP retrieval. file is a textual file in the format originally used by Netscape's cookies.txt file. You will typically use this option when mirroring sites that require that you be logged in to access some or all of their content. The login process typically works by the web server issuing an HTTP cookie upon receiving and verifying your credentials. The cookie is then resent by the browser when accessing that part of the site, and so proves your identity. Mirroring such a site requires Wget to send the same cookies your browser sends when communicating

Save cookies to file before exiting. This will not save cookies that have expired or that have no expiry time (so-called "session cookies"), but also see --keep-session-cookies.

When specified, causes --save-cookies to also save session cookies. Session cookies are normally not saved because they are meant to be kept in memory and forgotten when you exit the browser. Saving them is useful on sites that require you to log in or to visit the home page before you can access some pages. With this option, multiple Wget runs are considered a single browser session as far as the site is concerned. Since the cookie file format does not normally carry session cookies, Wget marks them with an expiry timestamp of 0. Wget's --load-cookies recognizes those as session cookies, but

Unfortunately, some HTTP servers (CGI programs, to be more precise) send out bogus "Content-Length" headers, which makes Wget go wild, as it thinks not all the document was retrieved. You can spot this syndrome if Wget retries getting the same document again and again, each time claiming that the (otherwise normal) connection has closed on the very same byte. With this option, Wget will ignore the "Content-Length" header---as if it never existed.

Send header-line along with the rest of the headers in each HTTP request. The supplied header is sent as-is, which means it must contain name and value separated by colon, and must not contain newlines. You may define more than one additional header by specifying --header more than once. wget --header='Accept-Charset: iso-8859-2' \ --header='Accept-Language: hr' \ http://fly.srk.fer.hr/ Specification of an empty string as the header value will clear all previous user-defined headers. As of Wget 1.10, this option can be used to override headers otherwise generated automatically. This example in

Choose the type of compression to be used. Legal values are auto, gzip and none. If auto or gzip are specified, Wget asks the server to compress the file using the gzip compression format. If the server compresses the file and responds with the "Content-Encoding" header field set appropriately, the file will be decompressed automatically. If none is specified, wget will not ask the server to compress the file and will not decompress any server responses. This is the default. Compression support is currently experimental. In case it is turned on, please report any bugs to "bug-wget@gnu.org".

Specifies the maximum number of redirections to follow for a resource. The default is 20, which is usually far more than necessary. However, on those occasions where you want to allow more (or fewer), this is the option to use.

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Specify the username user and password password for authentication on a proxy server. Wget will encode them using the "basic" authentication scheme. Security considerations similar to those with --http-password pertain here as well.

Include `Referer: url' header in HTTP request. Useful for retrieving documents with server-side processing that assume they are always being retrieved by interactive web browsers and only come out properly when Referer is set to one of the pages that point to them.

Save the headers sent by the HTTP server to the file, preceding the actual contents, with an empty line as the separator.

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Identify as agent-string to the HTTP server. The HTTP protocol allows the clients to identify themselves using a "User-Agent" header field. This enables distinguishing the WWW software, usually for statistical purposes or for tracing of protocol violations. Wget normally identifies as Wget/version, version being the current version number of Wget. However, some sites have been known to impose the policy of tailoring the output according to the "User-Agent"-supplied information. While this is not such a bad idea in theory, it has been abused by servers denying information to clients other than

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Use POST as the method for all HTTP requests and send the specified data in the request body. --post-data sends string as data, whereas --post-file sends the contents of file. Other than that, they work in exactly the same way. In particular, they both expect content of the form "key1=value1&key2=value2", with percent-encoding for special characters; the only difference is that one expects its content as a command-line parameter and the other accepts its content from a file. In particular, --post-file is not for transmitting files as form attachments: those must appear as "key=value" data (wit

For the purpose of RESTful scripting, Wget allows sending of other HTTP Methods without the need to explicitly set them using --header=Header-Line. Wget will use whatever string is passed to it after --method as the HTTP Method to the server.

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Must be set when additional data needs to be sent to the server along with the Method specified using --method. --body-data sends string as data, whereas --body-file sends the contents of file. Other than that, they work in exactly the same way. Currently, --body-file is not for transmitting files as a whole. Wget does not currently support "multipart/form-data" for transmitting data; only "application/x-www-form-urlencoded". In the future, this may be changed so that wget sends the --body-file as a complete file instead of sending its contents to the server. Please be aware that Wget needs to

If this is set to on, experimental (not fully-functional) support for "Content-Disposition" headers is enabled. This can currently result in extra round-trips to the server for a "HEAD" request, and is known to suffer from a few bugs, which is why it is not currently enabled by default. This option is useful for some file-downloading CGI programs that use "Content-Disposition" headers to describe what the name of a downloaded file should be. When combined with --metalink-over-http and --trust-server-names, a Content-Type: application/metalink4+xml file is named using the "Content-Disposition"

If this is set to on, wget will not skip the content when the server responds with a http status code that indicates error.

If this is set, on a redirect, the local file name will be based on the redirection URL. By default the local file name is based on the original URL. When doing recursive retrieving this can be helpful because in many web sites redirected URLs correspond to an underlying file structure, while link URLs do not.

If this option is given, Wget will send Basic HTTP authentication information (plaintext username and password) for all requests, just like Wget 1.10.2 and prior did by default. Use of this option is not recommended, and is intended only to support some few obscure servers, which never send HTTP authentication challenges, but accept unsolicited auth info, say, in addition to form-based authentication.

Consider host errors, such as "Temporary failure in name resolution", as non-fatal, transient errors.

Consider given HTTP response codes as non-fatal, transient errors. Supply a comma-separated list of 3-digit HTTP response codes as argument. Useful to work around special circumstances where retries are required, but the server responds with an error code normally not retried by Wget. Such errors might be 503 (Service Unavailable) and 429 (Too Many Requests). Retries enabled by this option are performed subject to the normal retry timing and retry count limitations of Wget. Using this option is intended to support special use cases only and is generally not recommended, as it can force retries

Choose the secure protocol to be used. Legal values are auto, SSLv2, SSLv3, TLSv1, TLSv1_1, TLSv1_2, TLSv1_3 and PFS. If auto is used, the SSL library is given the liberty of choosing the appropriate protocol automatically, which is achieved by sending a TLSv1 greeting. This is the default. Specifying SSLv2, SSLv3, TLSv1, TLSv1_1, TLSv1_2 or TLSv1_3 forces the use of the corresponding protocol. This is useful when talking to old and buggy SSL server implementations that make it hard for the underlying SSL library to choose the correct protocol version. Fortunately, such servers are quite rare.

When in recursive mode, only HTTPS links are followed.

Set the cipher list string. Typically this string sets the cipher suites and other SSL/TLS options that the user wish should be used, in a set order of preference (GnuTLS calls it 'priority string'). This string will be fed verbatim to the SSL/TLS engine (OpenSSL or GnuTLS) and hence its format and syntax is dependent on that. Wget will not process or manipulate it in any way. Refer to the OpenSSL or GnuTLS documentation for more information.

Don't check the server certificate against the available certificate authorities. Also don't require the URL host name to match the common name presented by the certificate. As of Wget 1.10, the default is to verify the server's certificate against the recognized certificate authorities, breaking the SSL handshake and aborting the download if the verification fails. Although this provides more secure downloads, it does break interoperability with some sites that worked with previous Wget versions, particularly those using self-signed, expired, or otherwise invalid certificates. This option for

Use the client certificate stored in file. This is needed for servers that are configured to require certificates from the clients that connect to them. Normally a certificate is not required and this switch is optional.

Specify the type of the client certificate. Legal values are PEM (assumed by default) and DER, also known as ASN1.

Read the private key from file. This allows you to provide the private key in a file separate from the certificate.

Specify the type of the private key. Accepted values are PEM (the default) and DER.

Use file as the file with the bundle of certificate authorities ("CA") to verify the peers. The certificates must be in PEM format. Without this option Wget looks for CA certificates at the system-specified locations, chosen at OpenSSL installation time.

Specifies directory containing CA certificates in PEM format. Each file contains one CA certificate, and the file name is based on a hash value derived from the certificate. This is achieved by processing a certificate directory with the "c_rehash" utility supplied with OpenSSL. Using --ca-directory is more efficient than --ca-certificate when many certificates are installed because it allows Wget to fetch certificates on demand. Without this option Wget looks for CA certificates at the system-specified locations, chosen at OpenSSL installation time.

Specifies a CRL file in file. This is needed for certificates that have been revocated by the CAs.

Tells wget to use the specified public key file (or hashes) to verify the peer. This can be a path to a file which contains a single public key in PEM or DER format, or any number of base64 encoded sha256 hashes preceded by "sha256//" and separated by ";" When negotiating a TLS or SSL connection, the server sends a certificate indicating its identity. A public key is extracted from this certificate and if it does not exactly match the public key(s) provided to this option, wget will abort the connection before sending or receiving any data.

[OpenSSL and LibreSSL only] Use file as the source of random data for seeding the pseudo-random number generator on systems without /dev/urandom. On such systems the SSL library needs an external source of randomness to initialize. Randomness may be provided by EGD (see --egd-file below) or read from an external source specified by the user. If this option is not specified, Wget looks for random data in $RANDFILE or, if that is unset, in $HOME/.rnd. If you're getting the "Could not seed OpenSSL PRNG; disabling SSL." error, you should provide random data using some of the methods described abov

[OpenSSL only] Use file as the EGD socket. EGD stands for Entropy Gathering Daemon, a user-space program that collects data from various unpredictable system sources and makes it available to other programs that might need it. Encryption software, such as the SSL library, needs sources of non-repeating randomness to seed the random number generator used to produce cryptographically strong keys. OpenSSL allows the user to specify his own source of entropy using the "RAND_FILE" environment variable. If this variable is unset, or if the specified file does not produce enough randomness, OpenSSL w

Wget supports HSTS (HTTP Strict Transport Security, RFC 6797) by default. Use --no-hsts to make Wget act as a non-HSTS-compliant UA. As a consequence, Wget would ignore all the "Strict-Transport-Security" headers, and would not enforce any existing HSTS policy.

By default, Wget stores its HSTS database in ~/.wget-hsts. You can use --hsts-file to override this. Wget will use the supplied file as the HSTS database. Such file must conform to the correct HSTS database format used by Wget. If Wget cannot parse the provided file, the behaviour is unspecified. The Wget's HSTS database is a plain text file. Each line contains an HSTS entry (ie. a site that has issued a "Strict-Transport-Security" header and that therefore has specified a concrete HSTS policy to be applied). Lines starting with a dash ("#") are ignored by Wget. Please note that in spite of th

Use file as the destination WARC file.

Use string into as the warcinfo record.

Set the maximum size of the WARC files to size.

Write CDX index files.

Do not store records listed in this CDX file.

Do not compress WARC files with GZIP.

Do not calculate SHA1 digests.

Do not store the log file in a WARC record.

Specify the location for temporary files created by the WARC writer.

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Specify the username user and password password on an FTP server. Without this, or the corresponding startup option, the password defaults to -wget@, normally used for anonymous FTP. Another way to specify username and password is in the URL itself. Either method reveals your password to anyone who bothers to run "ps". To prevent the passwords from being seen, store them in .wgetrc or .netrc, and make sure to protect those files from other users with "chmod". If the passwords are really important, do not leave them lying in those files either---edit the files and delete them after Wget has sta

Don't remove the temporary .listing files generated by FTP retrievals. Normally, these files contain the raw directory listings received from FTP servers. Not removing them can be useful for debugging purposes, or when you want to be able to easily check on the contents of remote server directories (e.g. to verify that a mirror you're running is complete). Note that even though Wget writes to a known filename for this file, this is not a security hole in the scenario of a user making .listing a symbolic link to /etc/passwd or something and asking "root" to run Wget in his or her directory. Dep

Turn off FTP globbing. Globbing refers to the use of shell-like special characters (wildcards), like *, ?, [ and ] to retrieve more than one file from the same directory at once, like: wget ftp://gnjilux.srk.fer.hr/*.msg By default, globbing will be turned on if the URL contains a globbing character. This option may be used to turn globbing on or off permanently. You may have to quote the URL to protect it from being expanded by your shell. Globbing makes Wget look for a directory listing, which is system-specific. This is why it currently works only with Unix FTP servers (and the ones emulati

Disable the use of the passive FTP transfer mode. Passive FTP mandates that the client connect to the server to establish the data connection rather than the other way around. If the machine is connected to the Internet directly, both passive and active FTP should work equally well. Behind most firewall and NAT configurations passive FTP has a better chance of working. However, in some rare firewall configurations, active FTP actually works when passive FTP doesn't. If you suspect this to be the case, use this option, or set "passive_ftp=off" in your init file.

Preserve remote file permissions instead of permissions set by umask.

By default, when retrieving FTP directories recursively and a symbolic link is encountered, the symbolic link is traversed and the pointed-to files are retrieved. Currently, Wget does not traverse symbolic links to directories to download them recursively, though this feature may be added in the future. When --retr-symlinks=no is specified, the linked-to file is not downloaded. Instead, a matching symbolic link is created on the local file system. The pointed-to file will not be retrieved unless this recursive retrieval would have encountered it separately and downloaded it anyway. This option

This option tells Wget to use FTPS implicitly. Implicit FTPS consists of initializing SSL/TLS from the very beginning of the control connection. This option does not send an "AUTH TLS" command: it assumes the server speaks FTPS and directly starts an SSL/TLS connection. If the attempt is successful, the session continues just like regular FTPS ("PBSZ" and "PROT" are sent, etc.). Implicit FTPS is no longer a requirement for FTPS implementations, and thus many servers may not support it. If --ftps-implicit is passed and no explicit port number specified, the default port for implicit FTPS, 990,

Do not resume the SSL/TLS session in the data channel. When starting a data connection, Wget tries to resume the SSL/TLS session previously started in the control connection. SSL/TLS session resumption avoids performing an entirely new handshake by reusing the SSL/TLS parameters of a previous session. Typically, the FTPS servers want it that way, so Wget does this by default. Under rare circumstances however, one might want to start an entirely new SSL/TLS session in every data connection. This is what --no-ftps-resume-ssl is for.

All the data connections will be in plain text. Only the control connection will be under SSL/TLS. Wget will send a "PROT C" command to achieve this, which must be approved by the server.

Fall back to FTP if FTPS is not supported by the target server. For security reasons, this option is not asserted by default. The default behaviour is to exit with an error. If a server does not successfully reply to the initial "AUTH TLS" command, or in the case of implicit FTPS, if the initial SSL/TLS connection attempt is rejected, it is considered that such server does not support FTPS.

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Turn on recursive retrieving. The default maximum depth is 5.

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Set the maximum number of subdirectories that Wget will recurse into to depth. In order to prevent one from accidentally downloading very large websites when using recursion this is limited to a depth of 5 by default, i.e., it will traverse at most 5 directories deep starting from the provided URL. Set -l 0 or -l inf for infinite recursion depth. wget -r -l 0 http://<site>/1.html Ideally, one would expect this to download just 1.html. but unfortunately this is not the case, because -l 0 is equivalent to -l inf---that is, infinite recursion. To download a single HTML page (or a handful of them)

This option tells Wget to delete every single file it downloads, after having done so. It is useful for pre-fetching popular pages through a proxy, e.g.: wget -r -nd --delete-after http://whatever.com/~popular/page/ The -r option is to retrieve recursively, and -nd to not create directories. Note that --delete-after deletes files on the local machine. It does not issue the DELE command to remote FTP sites, for instance. Also note that when --delete-after is specified, --convert-links is ignored, so .orig files are simply not created in the first place.

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After the download is complete, convert the links in the document to make them suitable for local viewing. This affects not only the visible hyperlinks, but any part of the document that links to external content, such as embedded images, links to style sheets, hyperlinks to non-HTML content, etc. Each link will be changed in one of the two ways:

This option converts only the filename part of the URLs, leaving the rest of the URLs untouched. This filename part is sometimes referred to as the "basename", although we avoid that term here in order not to cause confusion. It works particularly well in conjunction with --adjust-extension, although this coupling is not enforced. It proves useful to populate Internet caches with files downloaded from different hosts. Example: if some link points to //foo.com/bar.cgi?xyz with --adjust-extension asserted and its local destination is intended to be ./foo.com/bar.cgi?xyz.css, then the link would

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When converting a file, back up the original version with a .orig suffix. Affects the behavior of -N.

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Turn on options suitable for mirroring. This option turns on recursion and time-stamping, sets infinite recursion depth and keeps FTP directory listings. It is currently equivalent to -r -N -l inf --no-remove-listing.

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This option causes Wget to download all the files that are necessary to properly display a given HTML page. This includes such things as inlined images, sounds, and referenced stylesheets. Ordinarily, when downloading a single HTML page, any requisite documents that may be needed to display it properly are not downloaded. Using -r together with -l can help, but since Wget does not ordinarily distinguish between external and inlined documents, one is generally left with "leaf documents" that are missing their requisites. For instance, say document 1.html contains an "<IMG>" tag referencing 1.gi

Turn on strict parsing of HTML comments. The default is to terminate comments at the first occurrence of -->. According to specifications, HTML comments are expressed as SGML declarations. Declaration is special markup that begins with <! and ends with >, such as <!DOCTYPE ...>, that may contain comments between a pair of -- delimiters. HTML comments are "empty declarations", SGML declarations without any non-comment text. Therefore, <!--foo--> is a valid comment, and so is <!--one-- --two-->, but <!--1--2--> is not. On the other hand, most HTML writers don't perceive comments as anything othe

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Specify comma-separated lists of file name suffixes or patterns to accept or reject. Note that if any of the wildcard characters, *, ?, [ or ], appear in an element of acclist or rejlist, it will be treated as a pattern, rather than a suffix. In this case, you have to enclose the pattern into quotes to prevent your shell from expanding it, like in -A "*.mp3" or -A '*.mp3'.

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Specify a regular expression to accept or reject the complete URL.

Specify the regular expression type. Possible types are posix or pcre. Note that to be able to use pcre type, wget has to be compiled with libpcre support.

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Set domains to be followed. domain-list is a comma-separated list of domains. Note that it does not turn on -H.

Specify the domains that are not to be followed.

Follow FTP links from HTML documents. Without this option, Wget will ignore all the FTP links.

Wget has an internal table of HTML tag / attribute pairs that it considers when looking for linked documents during a recursive retrieval. If a user wants only a subset of those tags to be considered, however, he or she should be specify such tags in a comma-separated list with this option.

This is the opposite of the --follow-tags option. To skip certain HTML tags when recursively looking for documents to download, specify them in a comma-separated list. In the past, this option was the best bet for downloading a single page and its requisites, using a command-line like: wget --ignore-tags=a,area -H -k -K -r http://<site>/<document> However, the author of this option came across a page with tags like "<LINK REL="home" HREF="/">" and came to the realization that specifying tags to ignore was not enough. One can't just tell Wget to ignore "<LINK>", because then stylesheets will no

Ignore case when matching files and directories. This influences the behavior of -R, -A, -I, and -X options, as well as globbing implemented when downloading from FTP sites. For example, with this option, -A "*.txt" will match file1.txt, but also file2.TXT, file3.TxT, and so on. The quotes in the example are to prevent the shell from expanding the pattern.

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Enable spanning across hosts when doing recursive retrieving.

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Follow relative links only. Useful for retrieving a specific home page without any distractions, not even those from the same hosts.

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Specify a comma-separated list of directories you wish to follow when downloading. Elements of list may contain wildcards.

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Specify a comma-separated list of directories you wish to exclude from download. Elements of list may contain wildcards.

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Do not ever ascend to the parent directory when retrieving recursively. This is a useful option, since it guarantees that only the files below a certain hierarchy will be downloaded.