Manual Pages  — FETCH

The following options are available:

-1 -, --one-file
	Stop and return exit code 0 at the first successfully retrieved file.
-4 -, --ipv4-only
	Forces fetch to use IPv4 addresses only.
-6 -, --ipv6-only
	Forces fetch to use IPv6 addresses only.
-A -, --no-redirect
	Do not automatically follow ``temporary'' (302) redirects. Some broken Web sites will return a redirect instead of a not-found error when the requested object does not exist.
-a -, --retry
	Automatically retry the transfer upon soft failures.
-B bytes , --buffer-size= bytes
	Specify the read buffer size in bytes. The default is 16,384 bytes. Attempts to set a buffer size lower than this will be silently ignored. The number of reads actually performed is reported at verbosity level two or higher (see the -v flag).
--bind-address= host
	Specifies a hostname or IP address to which sockets used for outgoing connections will be bound.
-c dir
	The file to retrieve is in directory dir on the remote host. This option is deprecated and is provided for backward compatibility only.
--ca-cert= file
	[SSL] Path to certificate bundle containing trusted CA certificates. If not specified, /usr/local/etc/ssl/cert.pem is used. If this file does not exist, /etc/ssl/cert.pem is used instead. If neither file exists and no CA path has been configured, OpenSSL's default CA cert and path settings apply. The certificate bundle can contain multiple CA certificates. The security/ca_root_nss port is a common source of a current CA bundle.
--ca-path= dir
	[SSL] The directory dir contains trusted CA hashes.
--cert= file
	[SSL] file is a PEM encoded client certificate/key which will be used in client certificate authentication.
--crl= file
	[SSL] Points to certificate revocation list file, which has to be in PEM format and may contain peer certificates that have been revoked.
-d -, --direct
	Use a direct connection even if a proxy is configured.
-F -, --force-restart
	In combination with the -r flag, forces a restart even if the local and remote files have different modification times. Implies -R.
-f file
	The file to retrieve is named file on the remote host. This option is deprecated and is provided for backward compatibility only.
-h host
	The file to retrieve is located on the host host. This option is deprecated and is provided for backward compatibility only.
-i file , --if-modified-since= file
	If-Modified-Since mode: the remote file will only be retrieved if it is newer than file on the local host. (HTTP only)
--key= file
	[SSL] file is a PEM encoded client key that will be used in client certificate authentication in case key and client certificate are stored separately.
-l -, --symlink
	If the target is a file-scheme URL, make a symbolic link to the target rather than trying to copy it.
-M -m -, --mirror
	Mirror mode: if the file already exists locally and has the same size and modification time as the remote file, it will not be fetched. Note that the -m and -r flags are mutually exclusive.
-N file , --netrc= file
	Use file instead of ~/.netrc to look up login names and passwords for FTP sites. See ftp(1) for a description of the file format. This feature is experimental.
-n -, --no-mtime
	Do not preserve the modification time of the transferred file.
--no-passive
	Forces the FTP code to use active mode.
--no-proxy= list
	Either a single asterisk, which disables the use of proxies altogether, or a comma- or whitespace-separated list of hosts for which proxies should not be used.
--no-sslv3
	[SSL] Do not allow SSL version 3 when negotiating the connection. This option is deprecated and is provided for backward compatibility only. SSLv3 is disabled by default. Set SSL_ALLOW_SSL3 to change this behavior.
--no-tlsv1
	[SSL] Do not allow TLS version 1 when negotiating the connection.
--no-verify-hostname
	[SSL] Do not verify that the hostname matches the subject of the certificate presented by the server.
--no-verify-peer
	[SSL] Do not verify the peer certificate against trusted CAs.
-o file , --output= file
	Set the output file name to file. By default, a ``pathname'' is extracted from the specified URI, and its basename is used as the name of the output file. A file argument of 'amp;-' indicates that results are to be directed to the standard output. If the file argument is a directory, fetched file(s) will be placed within the directory, with name(s) selected as in the default behaviour.
-P -p -, --passive
	Use passive FTP. These flags have no effect, since passive FTP is the default, but are provided for compatibility with earlier versions where active FTP was the default. To force active mode, use the --no-passive flag or set the FTP_PASSIVE_MODE environment variable to ‘NO’.
--referer= URL
	Specifies the referrer URL to use for HTTP requests. If URL is set to "auto", the document URL will be used as referrer URL.
-q -, --quiet
	Quiet mode.
-R -, --keep-output
	The output files are precious, and should not be deleted under any circumstances, even if the transfer failed or was incomplete.
-r -, --restart
	Restart a previously interrupted transfer. Note that the -m and -r flags are mutually exclusive.
-S bytes , --require-size= bytes
	Require the file size reported by the server to match the specified value. If it does not, a message is printed and the file is not fetched. If the server does not support reporting file sizes, this option is ignored and the file is fetched unconditionally.
-s -, --print-size
	Print the size in bytes of each requested file, without fetching it.
-T seconds , --timeout= seconds
	Set timeout value to seconds. Overrides the environment variables FTP_TIMEOUT for FTP transfers or HTTP_TIMEOUT for HTTP transfers if set.
-U -, --passive-portrange-default
	When using passive FTP, allocate the port for the data connection from the low (default) port range. See ip(4) for details on how to specify which port range this corresponds to.
--user-agent= agent-string
	Specifies the User-Agent string to use for HTTP requests. This can be useful when working with HTTP origin or proxy servers that differentiate between user agents.
-v -, --verbose
	Increase verbosity level.
-w seconds , --retry-delay= seconds
	When the -a flag is specified, wait this many seconds between successive retries.

If fetch receives a SIGINFO signal (see the status argument for stty(1)), the current transfer rate statistics will be written to the standard error output, in the same format as the standard completion message.

See fetch(3) for a description of additional environment variables, including FETCH_BIND_ADDRESS, FTP_LOGIN, FTP_PASSIVE_MODE, FTP_PASSWORD, FTP_PROXY, ftp_proxy, HTTP_ACCEPT, HTTP_AUTH, HTTP_PROXY, http_proxy, HTTP_PROXY_AUTH, HTTP_REFERER, HTTP_USER_AGENT, NETRC, NO_PROXY, no_proxy, SSL_CA_CERT_FILE, SSL_CA_CERT_PATH, SSL_CLIENT_CERT_FILE, SSL_CLIENT_KEY_FILE, SSL_CRL_FILE, SSL_ALLOW_SSL3, SSL_NO_TLS1, SSL_NO_TLS1_1, SSL_NO_TLS1_2, SSL_NO_VERIFY_HOSTNAME and SSL_NO_VERIFY_PEER.