1# curl --help
  2Usage: curl [options...] <url>
  3Options: (H) means HTTP/HTTPS only, (F) means FTP only
  4     --anyauth       Pick "any" authentication method (H)
  5 -a, --append        Append to target file when uploading (F/SFTP)
  6     --basic         Use HTTP Basic Authentication (H)
  7     --cacert FILE   CA certificate to verify peer against (SSL)
  8     --capath DIR    CA directory to verify peer against (SSL)
  9 -E, --cert CERT[:PASSWD] Client certificate file and password (SSL)
 10     --cert-type TYPE Certificate file type (DER/PEM/ENG) (SSL)
 11     --ciphers LIST  SSL ciphers to use (SSL)
 12     --compressed    Request compressed response (using deflate or gzip)
 13 -K, --config FILE   Specify which config file to read
 14     --connect-timeout SECONDS  Maximum time allowed for connection
 15 -C, --continue-at OFFSET  Resumed transfer offset
 16 -b, --cookie STRING/FILE  String or file to read cookies from (H)
 17 -c, --cookie-jar FILE  Write cookies to this file after operation (H)
 18     --create-dirs   Create necessary local directory hierarchy
 19     --crlf          Convert LF to CRLF in upload
 20     --crlfile FILE  Get a CRL list in PEM format from the given file
 21 -d, --data DATA     HTTP POST data (H)
 22     --data-ascii DATA  HTTP POST ASCII data (H)
 23     --data-binary DATA  HTTP POST binary data (H)
 24     --data-urlencode DATA  HTTP POST data url encoded (H)
 25     --delegation STRING GSS-API delegation permission
 26     --digest        Use HTTP Digest Authentication (H)
 27     --disable-eprt  Inhibit using EPRT or LPRT (F)
 28     --disable-epsv  Inhibit using EPSV (F)
 29 -D, --dump-header FILE  Write the headers to this file
 30     --egd-file FILE  EGD socket path for random data (SSL)
 31     --engine ENGINGE  Crypto engine (SSL). "--engine list" for list
 32 -f, --fail          Fail silently (no output at all) on HTTP errors (H)
 33 -F, --form CONTENT  Specify HTTP multipart POST data (H)
 34     --form-string STRING  Specify HTTP multipart POST data (H)
 35     --ftp-account DATA  Account data string (F)
 36     --ftp-alternative-to-user COMMAND  String to replace "USER [name]" (F)
 37     --ftp-create-dirs  Create the remote dirs if not present (F)
 38     --ftp-method [MULTICWD/NOCWD/SINGLECWD] Control CWD usage (F)
 39     --ftp-pasv      Use PASV/EPSV instead of PORT (F)
 40 -P, --ftp-port ADR  Use PORT with given address instead of PASV (F)
 41     --ftp-skip-pasv-ip Skip the IP address for PASV (F)
 42     --ftp-pret      Send PRET before PASV (for drftpd) (F)
 43     --ftp-ssl-ccc   Send CCC after authenticating (F)
 44     --ftp-ssl-ccc-mode ACTIVE/PASSIVE  Set CCC mode (F)
 45     --ftp-ssl-control Require SSL/TLS for ftp login, clear for transfer (F)
 46 -G, --get           Send the -d data with a HTTP GET (H)
 47 -g, --globoff       Disable URL sequences and ranges using {} and []
 48 -H, --header LINE   Custom header to pass to server (H)
 49 -I, --head          Show document info only
 50 -h, --help          This help text
 51     --hostpubmd5 MD5  Hex encoded MD5 string of the host public key. (SSH)
 52 -0, --http1.0       Use HTTP 1.0 (H)
 53     --ignore-content-length  Ignore the HTTP Content-Length header
 54 -i, --include       Include protocol headers in the output (H/F)
 55 -k, --insecure      Allow connections to SSL sites without certs (H)
 56     --interface INTERFACE  Specify network interface/address to use
 57 -4, --ipv4          Resolve name to IPv4 address
 58 -6, --ipv6          Resolve name to IPv6 address
 59 -j, --junk-session-cookies Ignore session cookies read from file (H)
 60     --keepalive-time SECONDS  Interval between keepalive probes
 61     --key KEY       Private key file name (SSL/SSH)
 62     --key-type TYPE Private key file type (DER/PEM/ENG) (SSL)
 63     --krb LEVEL     Enable Kerberos with specified security level (F)
 64     --libcurl FILE  Dump libcurl equivalent code of this command line
 65     --limit-rate RATE  Limit transfer speed to this rate
 66 -l, --list-only     List only names of an FTP directory (F)
 67     --local-port RANGE  Force use of these local port numbers
 68 -L, --location      Follow redirects (H)
 69     --location-trusted like --location and send auth to other hosts (H)
 70 -M, --manual        Display the full manual
 71     --mail-from FROM  Mail from this address
 72     --mail-rcpt TO  Mail to this receiver(s)
 73     --mail-auth AUTH  Originator address of the original email
 74     --max-filesize BYTES  Maximum file size to download (H/F)
 75     --max-redirs NUM  Maximum number of redirects allowed (H)
 76 -m, --max-time SECONDS  Maximum time allowed for the transfer
 77     --metalink      Process given URLs as metalink XML file
 78     --negotiate     Use HTTP Negotiate Authentication (H)
 79 -n, --netrc         Must read .netrc for user name and password
 80     --netrc-optional Use either .netrc or URL; overrides -n
 81     --netrc-file FILE  Set up the netrc filename to use
 82 -N, --no-buffer     Disable buffering of the output stream
 83     --no-keepalive  Disable keepalive use on the connection
 84     --no-sessionid  Disable SSL session-ID reusing (SSL)
 85     --noproxy       List of hosts which do not use proxy
 86     --ntlm          Use HTTP NTLM authentication (H)
 87 -o, --output FILE   Write output to <file> instead of stdout
 88     --pass PASS     Pass phrase for the private key (SSL/SSH)
 89     --post301       Do not switch to GET after following a 301 redirect (H)
 90     --post302       Do not switch to GET after following a 302 redirect (H)
 91     --post303       Do not switch to GET after following a 303 redirect (H)
 92 -#, --progress-bar  Display transfer progress as a progress bar
 93     --proto PROTOCOLS  Enable/disable specified protocols
 94     --proto-redir PROTOCOLS  Enable/disable specified protocols on redirect
 95 -x, --proxy [PROTOCOL://]HOST[:PORT] Use proxy on given port
 96     --proxy-anyauth Pick "any" proxy authentication method (H)
 97     --proxy-basic   Use Basic authentication on the proxy (H)
 98     --proxy-digest  Use Digest authentication on the proxy (H)
 99     --proxy-negotiate Use Negotiate authentication on the proxy (H)
100     --proxy-ntlm    Use NTLM authentication on the proxy (H)
101 -U, --proxy-user USER[:PASSWORD]  Proxy user and password
102     --proxy1.0 HOST[:PORT]  Use HTTP/1.0 proxy on given port
103 -p, --proxytunnel   Operate through a HTTP proxy tunnel (using CONNECT)
104     --pubkey KEY    Public key file name (SSH)
105 -Q, --quote CMD     Send command(s) to server before transfer (F/SFTP)
106     --random-file FILE  File for reading random data from (SSL)
107 -r, --range RANGE   Retrieve only the bytes within a range
108     --raw           Do HTTP "raw", without any transfer decoding (H)
109 -e, --referer       Referer URL (H)
110 -J, --remote-header-name Use the header-provided filename (H)
111 -O, --remote-name   Write output to a file named as the remote file
112     --remote-name-all Use the remote file name for all URLs
113 -R, --remote-time   Set the remote file's time on the local output
114 -X, --request COMMAND  Specify request command to use
115     --resolve HOST:PORT:ADDRESS  Force resolve of HOST:PORT to ADDRESS
116     --retry NUM   Retry request NUM times if transient problems occur
117     --retry-delay SECONDS When retrying, wait this many seconds between each
118     --retry-max-time SECONDS  Retry only within this period
119 -S, --show-error    Show error. With -s, make curl show errors when they occur
120 -s, --silent        Silent mode. Don't output anything
121     --socks4 HOST[:PORT]  SOCKS4 proxy on given host + port
122     --socks4a HOST[:PORT]  SOCKS4a proxy on given host + port
123     --socks5 HOST[:PORT]  SOCKS5 proxy on given host + port
124     --socks5-basic  Enable username/password auth for SOCKS5 proxies
125     --socks5-gssapi Enable GSS-API auth for SOCKS5 proxies
126     --socks5-hostname HOST[:PORT] SOCKS5 proxy, pass host name to proxy
127     --socks5-gssapi-service NAME  SOCKS5 proxy service name for gssapi
128     --socks5-gssapi-nec  Compatibility with NEC SOCKS5 server
129 -Y, --speed-limit RATE  Stop transfers below speed-limit for 'speed-time' secs
130 -y, --speed-time SECONDS  Time for trig speed-limit abort. Defaults to 30
131     --ssl           Try SSL/TLS (FTP, IMAP, POP3, SMTP)
132     --ssl-reqd      Require SSL/TLS (FTP, IMAP, POP3, SMTP)
133 -2, --sslv2         Use SSLv2 (SSL)
134 -3, --sslv3         Use SSLv3 (SSL)
135     --ssl-allow-beast Allow security flaw to improve interop (SSL)
136     --stderr FILE   Where to redirect stderr. - means stdout
137     --tcp-nodelay   Use the TCP_NODELAY option
138 -t, --telnet-option OPT=VAL  Set telnet option
139     --tftp-blksize VALUE  Set TFTP BLKSIZE option (must be >512)
140 -z, --time-cond TIME  Transfer based on a time condition
141 -1, --tlsv1         Use => TLSv1 (SSL)
142     --tlsv1.0       Use TLSv1.0 (SSL)
143     --tlsv1.1       Use TLSv1.1 (SSL)
144     --tlsv1.2       Use TLSv1.2 (SSL)
145     --tlsv1.3       Use TLSv1.3 (SSL)
146     --tls-max VERSION  Use TLS up to VERSION (SSL)
147     --trace FILE    Write a debug trace to the given file
148     --trace-ascii FILE  Like --trace but without the hex output
149     --trace-time    Add time stamps to trace/verbose output
150     --tr-encoding   Request compressed transfer encoding (H)
151 -T, --upload-file FILE  Transfer FILE to destination
152     --url URL       URL to work with
153 -B, --use-ascii     Use ASCII/text transfer
154 -u, --user USER[:PASSWORD]  Server user and password
155     --tlsuser USER  TLS username
156     --tlspassword STRING TLS password
157     --tlsauthtype STRING  TLS authentication type (default SRP)
158     --unix-socket FILE    Connect through this UNIX domain socket
159 -A, --user-agent STRING  User-Agent to send to server (H)
160 -v, --verbose       Make the operation more talkative
161 -V, --version       Show version number and quit
162 -w, --write-out FORMAT  What to output after completion
163     --xattr        Store metadata in extended file attributes
164 -q                 If used as the first parameter disables .curlrc