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
       ssh <user>@localhost

       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 directory.

       git shell accepts the following commands after the -c option:

       git receive-pack <argument>, git upload-pack <argument>, git
       upload-archive <argument>
           Call the corresponding server-side command to support the client’s
           git push, git fetch, or git archive --remote request.

       cvs server
           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."
           exit 128
           $ 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\""
                   exit 1
           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 2.34.0                         11/14/2021                       GIT-SHELL(1)