A command line tool and library for transferring data with URL syntax, supporting DICT, FILE, FTP, FTPS, GOPHER, GOPHERS, HTTP, HTTPS, IMAP, IMAPS, LDAP, LDAPS, MQTT, POP3, POP3S, RTMP, RTMPS, RTSP, SCP, SFTP, SMB, SMBS, SMTP, SMTPS, TELNET, TFTP, WS and WSS. libcurl offers a myriad of powerful features
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Viktor Szakats ccf19d59e7
scripts: use end-of-options marker in cd, mkdir, mv, sha256sum commands
Where missing. To avoid passing an option by accident.

End-of-option marker (`--`) is not POSIX, but most of these scripts are
internal and/or CI-focused, where this is fine. `maketgz` and
`verify-release` are meant for public use, and I asses this is fine too,
but let us know if this causes issues in real world envs.

Also:
- maketgz: pass args with `:?` to `rm -rf`, where missing.
  Cannot cause an actual issue with current code.
- verified `cp`, `rm` instances too, but none were affected.
- tests/cmake/test.sh: replace `$PWD` with `$(pwd)` for sturdiness.
- appveyor.sh: replace `$PWD` with `$(pwd)` for sturdiness.

Assisted-by: Dan Fandrich
Follow-up to 6aab1dc263 #19450

Closes #22150
2026-06-25 11:32:36 +02:00
.circleci runtests: detect bad libssh differently for test 1459 (fixing CircleCI libssh job) 2025-11-16 23:28:44 +01:00
.github scripts: use end-of-options marker in cd, mkdir, mv, sha256sum commands 2026-06-25 11:32:36 +02:00
CMake build: enable thread-safe getaddrinfo() for OpenBSD, and other tidy-ups 2026-06-25 11:32:36 +02:00
docs VERSIONS: 8.21.0 release 2026-06-24 07:52:50 +02:00
include RELEASE-NOTES: synced 2026-06-25 08:42:02 +02:00
lib ssh: dedupe ssh_pollset() functions 2026-06-25 11:32:36 +02:00
LICENSES spacecheck: check long lines and repeat spaces, fix fallouts 2026-03-25 11:02:08 +01:00
m4 build: enable thread-safe getaddrinfo() for OpenBSD, and other tidy-ups 2026-06-25 11:32:36 +02:00
projects tidy-up: make 'CA' uppercase, where missing 2026-06-22 21:04:45 +02:00
scripts scripts: use end-of-options marker in cd, mkdir, mv, sha256sum commands 2026-06-25 11:32:36 +02:00
src tool: optimize setopt use 2026-06-25 11:11:41 +02:00
tests scripts: use end-of-options marker in cd, mkdir, mv, sha256sum commands 2026-06-25 11:32:36 +02:00
.clang-tidy.yml clang-tidy: enable more checks, fix fallouts 2026-04-14 02:20:16 +02:00
.dir-locals.el copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
.editorconfig .editorconfig: add 2025-09-02 08:36:40 +02:00
.git-blame-ignore-revs copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
.gitattributes buildconf: remove 2026-04-04 11:35:24 +02:00
.gitignore build: drop the winbuild build system 2025-09-20 01:20:25 +02:00
.mailmap mailmap: Darren Banfi 2026-06-12 14:48:12 +02:00
acinclude.m4 tidy-up: make 'CA' uppercase, where missing 2026-06-22 21:04:45 +02:00
appveyor.sh scripts: use end-of-options marker in cd, mkdir, mv, sha256sum commands 2026-06-25 11:32:36 +02:00
appveyor.yml appveyor: bump 3 VS2022 jobs to VS2026 2026-06-09 21:16:54 +02:00
CHANGES.md CHANGES: fix typo in filename 2026-01-01 12:20:10 +01:00
CMakeLists.txt build: enable thread-safe getaddrinfo() for OpenBSD, and other tidy-ups 2026-06-25 11:32:36 +02:00
configure.ac tidy-up: make 'CA' uppercase, where missing 2026-06-22 21:04:45 +02:00
COPYING COPYING: bump copyright year range to 1996 - 2026 2026-01-08 23:19:44 +01:00
curl-config.in autotools: tidy-up if expressions 2025-12-10 22:29:19 +01:00
Dockerfile GHA: update debian:bookworm-slim Docker digest to 60eac75 2026-06-24 11:42:21 +02:00
GIT-INFO.md REUSE: add copyright header to two files 2025-11-03 16:08:52 +01:00
libcurl.pc.in configure: do not echo most inherited LDFLAGS to config files 2024-11-14 09:55:45 +01:00
Makefile.am rtmp: drop support 2026-03-21 14:56:06 +01:00
README BUG-BOUNTY.md: we stop the bug-bounty end of Jan 2026 2026-01-26 08:26:28 +01:00
README.md rtmp: drop support 2026-03-21 14:56:06 +01:00
RELEASE-NOTES RELEASE-NOTES: synced 2026-06-25 08:42:02 +02:00
renovate.json renovate: use standard bump formula for OpenSSL 2026-04-15 10:17:33 +02:00
REUSE.toml github: Add AI usage warning to issue, doc and PR templates 2026-06-02 13:47:01 -04:00
SECURITY.md stop using the word 'just' 2026-03-03 15:30:22 +01:00

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curl is a command-line tool for transferring data from or to a server using URLs. It supports these protocols: DICT, FILE, FTP, FTPS, GOPHER, GOPHERS, HTTP, HTTPS, IMAP, IMAPS, LDAP, LDAPS, MQTT, MQTTS, POP3, POP3S, RTSP, SCP, SFTP, SMB, SMBS, SMTP, SMTPS, TELNET, TFTP, WS and WSS.

Learn how to use curl by reading the man page or everything curl.

Find out how to install curl by reading the INSTALL document.

libcurl is the library curl is using to do its job. It is readily available to be used by your software. Read the libcurl man page to learn how.

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