GIT-SHELL(1) Git Manual GIT-SHELL(1)
git-shell - Restricted login shell for Git-only SSH access
chsh -s $(command -v git-shell) <user>
git clone <user>@localhost:/path/to/repo.git
This is a login shell for SSH accounts to provide restricted Git
access. It permits execution only of server-side Git commands
implementing the pull/push functionality, plus custom commands present
in a subdirectory named git-shell-commands in the user's home
git shell accepts the following commands after the -c option:
git receive-pack <argument>, git upload-pack <argument>, git
Call the corresponding server-side command to support the client's
git push, git fetch, or git archive --remote request.
Imitate a CVS server. See git-cvsserver(1).
If a ~/git-shell-commands directory is present, git shell will also
handle other, custom commands by running "git-shell-commands/<command>
<arguments>" from the user's home directory.
By default, the commands above can be executed only with the -c option;
the shell is not interactive.
If a ~/git-shell-commands directory is present, git shell can also be
run interactively (with no arguments). If a help command is present in
the git-shell-commands directory, it is run to provide the user with an
overview of allowed actions. Then a "git> " prompt is presented at
which one can enter any of the commands from the git-shell-commands
directory, or exit to close the connection.
Generally this mode is used as an administrative interface to allow
users to list repositories they have access to, create, delete, or
rename repositories, or change repository descriptions and permissions.
If a no-interactive-login command exists, then it is run and the
interactive shell is aborted.
To disable interactive logins, displaying a greeting instead:
$ chsh -s /usr/bin/git-shell
$ mkdir $HOME/git-shell-commands
$ cat >$HOME/git-shell-commands/no-interactive-login <<\EOF
printf '%s\n' "Hi $USER! You've successfully authenticated, but I do not"
printf '%s\n' "provide interactive shell access."
$ chmod +x $HOME/git-shell-commands/no-interactive-login
To enable git-cvsserver access (which should generally have the
no-interactive-login example above as a prerequisite, as creating the
git-shell-commands directory allows interactive logins):
$ cat >$HOME/git-shell-commands/cvs <<\EOF
if ! test $# = 1 && test "$1" = "server"
echo >&2 "git-cvsserver only handles \"server\""
exec git cvsserver server
$ chmod +x $HOME/git-shell-commands/cvs
ssh(1), git-daemon(1), contrib/git-shell-commands/README
Part of the git(1) suite
Git 2.17.1 09/09/2021 GIT-SHELL(1)
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