Curl: Difference between revisions
Content added Content deleted
m (→URL syntax: m) |
m (m) |
||
Line 7:
Curl command has the following functionality:
<pre>
Multiple URLs
Usernames and Passwords support
Line 59:
FTP Connection re-use
GOPHER
</
=One-Liners=
|
Revision as of 13:18, 28 June 2017
Curl is a tool to transfer data from or to a server, using one of the supported protocols
DICT, FILE, FTP, FTPS, GOPHER, HTTP, HTTPS, IMAP, IMAPS, LDAP, LDAPS, POP3, POP3S, RTMP, RTSP, SCP, SFTP, SMB, SMBS, SMTP, SMTPS, TELNET and TFTP.
Curl command has the following functionality:
Multiple URLs Usernames and Passwords support IPv6 support Retry failed download URL globbing/sequences Win32 support Large file support GnuTLS support DarwinSSL support Schannel support Cyassl support PolarSSL support AxTLS support SSL Session ID SSL Private Certificate netrc support Metalink support IDN support Bandwidth limiting Happy eyeballs SOCKS TFTP SCP upload/download SFTP upload/download HTTP Proxy HTTP Resume HTTP Ranges Follow HTTP Redirects HTTP Post HTTP Post Chunked HTTP Put Cookie support HTTP 1.1 HTTP 2 (plain text upgrade) HTTP 2 (TLS ALPN) HTTP 2 (TLS NPN) HTTP persistent connections HTTPS HTTP Digest Auth HTTP NTLM Auth HTTP Negotiate Auth HTTP Multipost Part HTTP Deflate gzip FTP resume FTP ranges FTP active mode FTP SSL FTP upload FTP Kerberos FTP Connection re-use GOPHER
One-Liners
Save the output of the URL to a file curl -o website.html https://domain.com curl -o archive.zip https://domain.com/file.zip curl https://domain.com > website.html Save with name same as remote file curl -O https://domain.com/file.zip curl -O https://domain.com/file.zip -O https://domain.com/file2.zip Download files securely via SSH curl -u user sftp://server.domain.com/path/to/file curl -u username:password https://domain.com Get HTTP header information curl -I http://domain.com Access an FTP server curl ftp://ftp.domain.com --user username:password Download a file via FTP curl ftp://ftp.domain.com/file.zip --user username:password curl -u ftpuser:password -O ftp://ftp_pub/public_html/index.html Upload a file to the FTP server curl -T file.zip ftp://ftp.domain.com/ --user username:password curl -u ftpuser:password -T linuxtechi.txt ftp://ftp_pub/public_html/ To upload multiple files to FTP server curl -u ftpuser:password -T "(linuxtechi1.txt linuxtechi2.txt)" ftp://ftp_pub/public_html/ Deleting files from ftp server curl ftp://ftp_pub/public_html -X 'DELE linuxtechi.zip' --user ftpuser:password Handle URL redirects curl -L http://domain.com Debug level details curl -v http://domain.com Using proxy to download a file curl -x proxy.server.com:3128 https://domain.com Limit data transfer rate curl --limit-rate 1024B -O https://domain.com Download file modified after a given date curl -z 1-Jan-17 https://domain.com Download file modified before a given date curl -z -1-Jan-17 https://domain.com Resume a download curl -C https://domain.com Verifying SSL certificate curl --cacert new-ca.crt https://domain.com Ignoring the ssl certificate warning curl -k https://domain.com
URL syntax
- You can specify multiple URLs or parts of URLs by writing part sets within braces as in:
http://site.{one,two,three}.com
- You can get sequences of alphanumeric series by using [] as in:
ftp://ftp.numericals.com/file[1-100].txt ftp://ftp.numericals.com/file[001-100].txt ftp://ftp.letters.com/file[a-z].txt
- Nested sequences are not supported, but you can use several ones next to each other:
http://any.org/archive[1996-1999]/vol[1-4]/part{a,b,c}.html
- You can specify a step counter for the ranges to get every Nth number or letter:
http://www.numericals.com/file[1-100:10].txt http://www.letters.com/file[a-z:2].txt
- If you specify URL without protocol:// prefix, curl will attempt to guess what protocol you might want.
- It will then default to HTTP but try other protocols based on often-used host name prefixes.
- For example, for host names starting with "ftp." curl will assume you want to speak FTP.
- Curl will attempt to re-use connections for multiple file transfers, so that getting many files from the same server will not do multiple connects / handshakes.
- This improves speed.
- Of course this is only done on files specified on a single command line and cannot be used between separate curl invokes.
Switches
Progress Meter -# Append in FTP/SFTP -a User-agent -A "Mozilla/4.0" Tells curl to figure out auth method --anyauth Cookie -b Cookie-jar(file curl should use to save all cookies) -c
This section is under construction. |
- References
{{#widget:DISQUS
|id=networkm
|uniqid=Curl
|url=https://aman.awiki.org/wiki/Curl
}}