Curl --help

curl --help
Usage: curl [options...] <url>
     --abstract-unix-socket <path> Connect via abstract Unix domain socket
     --alt-svc <file name> Enable alt-svc with this cache file
     --anyauth       Pick any authentication method
 -a, --append        Append to target file when uploading
     --basic         Use HTTP Basic Authentication
     --cacert <file> CA certificate to verify peer against
     --capath <dir>  CA directory to verify peer against
 -E, --cert <certificate[:password]> Client certificate file and password
     --cert-status   Verify the status of the server certificate
     --cert-type <type> Certificate file type (DER/PEM/ENG)
     --ciphers <list of ciphers> SSL ciphers to use
     --compressed    Request compressed response
     --compressed-ssh Enable SSH compression
 -K, --config <file> Read config from a file
     --connect-timeout <seconds> Maximum time allowed for connection
     --connect-to <HOST1:PORT1:HOST2:PORT2> Connect to host
 -C, --continue-at <offset> Resumed transfer offset
 -b, --cookie <data|filename> Send cookies from string/file
 -c, --cookie-jar <filename> Write cookies to <filename> after operation
     --create-dirs   Create necessary local directory hierarchy
     --crlf          Convert LF to CRLF in upload
     --crlfile <file> Get a CRL list in PEM format from the given file
 -d, --data    HTTP POST data
      --data-ascii  HTTP POST ASCII data 
     --data-binary  HTTP POST binary data
     --data-raw  HTTP POST data, '@' allowed 
     --data-urlencode  HTTP POST data url encoded
     --delegation <LEVEL> GSS-API delegation permission
     --digest        Use HTTP Digest Authentication
 -q, --disable       Disable .curlrc
     --disable-eprt  Inhibit using EPRT or LPRT
     --disable-epsv  Inhibit using EPSV
     --disallow-username-in-url Disallow username in url
     --dns-interface <interface> Interface to use for DNS requests
     --dns-ipv4-addr <address> IPv4 address to use for DNS requests
     --dns-ipv6-addr <address> IPv6 address to use for DNS requests
    --dns-servers <addresses> DNS server addrs to use
     --doh-url <URL> Resolve host names over DOH
 -D, --dump-header <filename> Write the received headers to <filename>
     --egd-file <file> EGD socket path for random data
     --engine <name> Crypto engine to use
     --expect100-timeout <seconds> How long to wait for 100-continue
 -f, --fail          Fail silently (no output at all) on HTTP errors
     --fail-early    Fail on first transfer error, do not continue
     --false-start   Enable TLS False Start
 -F, --form <name=content> Specify multipart MIME data
      --form-string <name=string> Specify multipart MIME data
    --ftp-account  Account data string
    --ftp-alternative-to-user <command> String to replace USER [name]
    --ftp-create-dirs Create the remote dirs if not present
    --ftp-method <method> Control CWD usage
    --ftp-pasv      Use PASV/EPSV instead of PORT
-P, --ftp-port <address> Use PORT instead of PASV
    --ftp-pret      Send PRET before PASV
    --ftp-skip-pasv-ip Skip the IP address for PASV
    --ftp-ssl-ccc   Send CCC after authenticating
    --ftp-ssl-ccc-mode <active/passive> Set CCC mode
    --ftp-ssl-control Require SSL/TLS for FTP login, clear for transfer
-G, --get           Put the post data in the URL and use GET
-g, --globoff       Disable URL sequences and ranges using {} and []
    --happy-eyeballs-timeout-ms <milliseconds> How long to wait in milliseconds for IPv6 before trying IPv4
    --haproxy-protocol Send HAProxy PROXY protocol v1 header
-I, --head          Show document info only
-H, --header <header/@file> Pass custom header(s) to server
-h, --help          This help text
    --hostpubmd5 <md5> Acceptable MD5 hash of the host public key
    --http0.9       Allow HTTP 0.9 responses
-0, --http1.0       Use HTTP 1.0
    --http1.1       Use HTTP 1.1
    --http2         Use HTTP 2
    --http2-prior-knowledge Use HTTP 2 without HTTP/1.1 Upgrade
    --ignore-content-length Ignore the size of the remote resource
-i, --include       Include protocol response headers in the output
-k, --insecure      Allow insecure server connections when using SSL
    --interface <name> Use network INTERFACE (or address)
-4, --ipv4          Resolve names to IPv4 addresses
-6, --ipv6          Resolve names to IPv6 addresses
-j, --junk-session-cookies Ignore session cookies read from file
    --keepalive-time <seconds> Interval time for keepalive probes
    --key <key>     Private key file name
    --key-type <type> Private key file type (DER/PEM/ENG)
    --krb <level>   Enable Kerberos with security <level>
    --libcurl <file> Dump libcurl equivalent code of this command line
    --limit-rate <speed> Limit transfer speed to RATE
-l, --list-only     List only mode
    --local-port <num/range> Force use of RANGE for local port numbers
-L, --location      Follow redirects
    --location-trusted Like --location, and send auth to other hosts
    --login-options <options> Server login options
    --mail-auth <address> Originator address of the original email
    --mail-from <address> Mail from this address
    --mail-rcpt <address> Mail to this address
-M, --manual        Display the full manual
    --max-filesize <bytes> Maximum file size to download
    --max-redirs <num> Maximum number of redirects allowed
-m, --max-time <seconds> Maximum time allowed for the transfer
    --metalink      Process given URLs as metalink XML file
    --negotiate     Use HTTP Negotiate (SPNEGO) authentication
-n, --netrc         Must read .netrc for user name and password
    --netrc-file <filename> Specify FILE for netrc
    --netrc-optional Use either .netrc or URL
-:, --next          Make next URL use its separate set of options
    --no-alpn       Disable the ALPN TLS extension
-N, --no-buffer     Disable buffering of the output stream
    --no-keepalive  Disable TCP keepalive on the connection
    --no-npn        Disable the NPN TLS extension
    --no-sessionid  Disable SSL session-ID reusing
    --noproxy <no-proxy-list> List of hosts which do not use proxy
    --ntlm          Use HTTP NTLM authentication
    --ntlm-wb       Use HTTP NTLM authentication with winbind
    --oauth2-bearer <token> OAuth 2 Bearer Token
-o, --output <file> Write to file instead of stdout
    --pass <phrase> Pass phrase for the private key
    --path-as-is    Do not squash .. sequences in URL path
    --pinnedpubkey <hashes> FILE/HASHES Public key to verify peer against
    --post301       Do not switch to GET after following a 301
    --post302       Do not switch to GET after following a 302
    --post303       Do not switch to GET after following a 303
    --preproxy [protocol://]host[:port] Use this proxy first
-#, --progress-bar  Display transfer progress as a bar
    --proto <protocols> Enable/disable PROTOCOLS
    --proto-default <protocol> Use PROTOCOL for any URL missing a scheme
    --proto-redir <protocols> Enable/disable PROTOCOLS on redirect
-x, --proxy [protocol://]host[:port] Use this proxy
    --proxy-anyauth Pick any proxy authentication method
    --proxy-basic   Use Basic authentication on the proxy
    --proxy-cacert <file> CA certificate to verify peer against for proxy
    --proxy-capath <dir> CA directory to verify peer against for proxy
    --proxy-cert <cert[:passwd]> Set client certificate for proxy
    --proxy-cert-type <type> Client certificate type for HTTPS proxy
    --proxy-ciphers <list> SSL ciphers to use for proxy
    --proxy-crlfile <file> Set a CRL list for proxy
    --proxy-digest  Use Digest authentication on the proxy
    --proxy-header <header/@file> Pass custom header(s) to proxy
    --proxy-insecure Do HTTPS proxy connections without verifying the proxy
    --proxy-key <key> Private key for HTTPS proxy
    --proxy-key-type <type> Private key file type for proxy
    --proxy-negotiate Use HTTP Negotiate (SPNEGO) authentication on the proxy
    --proxy-ntlm    Use NTLM authentication on the proxy
    --proxy-pass <phrase> Pass phrase for the private key for HTTPS proxy
    --proxy-pinnedpubkey <hashes> FILE/HASHES public key to verify proxy with
    --proxy-service-name <name> SPNEGO proxy service name
    --proxy-ssl-allow-beast Allow security flaw for interop for HTTPS proxy
    --proxy-tls13-ciphers <ciphersuite list> TLS 1.3 proxy cipher suites
    --proxy-tlsauthtype <type> TLS authentication type for HTTPS proxy
    --proxy-tlspassword <string> TLS password for HTTPS proxy
    --proxy-tlsuser <name> TLS username for HTTPS proxy
    --proxy-tlsv1   Use TLSv1 for HTTPS proxy
-U, --proxy-user <user:password> Proxy user and password
    --proxy1.0 <host[:port]> Use HTTP/1.0 proxy on given port
-p, --proxytunnel   Operate through an HTTP proxy tunnel (using CONNECT)
    --pubkey <key>  SSH Public key file name
-Q, --quote         Send command(s) to server before transfer
    --random-file <file> File for reading random data from
-r, --range <range> Retrieve only the bytes within RANGE
    --raw           Do HTTP "raw"; no transfer decoding
-e, --referer <URL> Referrer URL
-J, --remote-header-name Use the header-provided filename
-O, --remote-name   Write output to a file named as the remote file
    --remote-name-all Use the remote file name for all URLs
-R, --remote-time   Set the remote file's time on the local output
-X, --request <command> Specify request command to use
    --request-target Specify the target for this request
    --resolve <host:port:address[,address]...> Resolve the host+port to this address
    --retry <num>   Retry request if transient problems occur
    --retry-connrefused Retry on connection refused (use with --retry)
    --retry-delay <seconds> Wait time between retries
    --retry-max-time <seconds> Retry only within this period
    --sasl-ir       Enable initial response in SASL authentication
    --service-name <name> SPNEGO service name
-S, --show-error    Show error even when -s is used
-s, --silent        Silent mode
    --socks4 <host[:port]> SOCKS4 proxy on given host + port
    --socks4a <host[:port]> SOCKS4a proxy on given host + port
    --socks5 <host[:port]> SOCKS5 proxy on given host + port
    --socks5-basic  Enable username/password auth for SOCKS5 proxies
    --socks5-gssapi Enable GSS-API auth for SOCKS5 proxies
    --socks5-gssapi-nec Compatibility with NEC SOCKS5 server
    --socks5-gssapi-service <name> SOCKS5 proxy service name for GSS-API
    --socks5-hostname <host[:port]> SOCKS5 proxy, pass host name to proxy
-Y, --speed-limit <speed> Stop transfers slower than this
-y, --speed-time <seconds> Trigger 'speed-limit' abort after this time
    --ssl           Try SSL/TLS
    --ssl-allow-beast Allow security flaw to improve interop
    --ssl-no-revoke Disable cert revocation checks (Schannel)
    --ssl-reqd      Require SSL/TLS
-2, --sslv2         Use SSLv2
-3, --sslv3         Use SSLv3
    --stderr        Where to redirect stderr
    --styled-output Enable styled output for HTTP headers
    --suppress-connect-headers Suppress proxy CONNECT response headers
    --tcp-fastopen  Use TCP Fast Open
    --tcp-nodelay   Use the TCP_NODELAY option
-t, --telnet-option <opt=val> Set telnet option
    --tftp-blksize <value> Set TFTP BLKSIZE option
    --tftp-no-options Do not send any TFTP options
-z, --time-cond  Transfer based on a time condition
    --tls-max <VERSION> Set maximum allowed TLS version
    --tls13-ciphers <list of TLS 1.3 ciphersuites> TLS 1.3 cipher suites to use
    --tlsauthtype <type> TLS authentication type
    --tlspassword   TLS password
    --tlsuser <name> TLS user name
-1, --tlsv1         Use TLSv1.0 or greater
    --tlsv1.0       Use TLSv1.0 or greater
    --tlsv1.1       Use TLSv1.1 or greater
    --tlsv1.2       Use TLSv1.2 or greater
    --tlsv1.3       Use TLSv1.3 or greater
    --tr-encoding   Request compressed transfer encoding
    --trace <file>  Write a debug trace to FILE
    --trace-ascii <file> Like --trace, but without hex output
    --trace-time    Add time stamps to trace/verbose output
    --unix-socket <path> Connect through this Unix domain socket
-T, --upload-file <file> Transfer local FILE to destination
    --url <url>     URL to work with
-B, --use-ascii     Use ASCII/text transfer
-u, --user <user:password> Server user and password
-A, --user-agent <name> Send User-Agent <name> to server
-v, --verbose       Make the operation more talkative
-V, --version       Show version number and quit
-w, --write-out <format> Use output FORMAT after completion
    --xattr         Store metadata in extended file attributes

See also

• cURL, curl -s, -X, -x, curl -T, curl --help, curl -L, curl -m, curl -o, curl -X POST, curl -d, curl --header, curl -I, curl --silent, curl -Is, curl -k or curl --insecure, curl -XPUT, curl -d, ~/.curlrc, curl -i, curl --version, curl --help