git-shell
gns@localhost ~ $ git-shell
fatal: What do you think I am? A shell?
gns@localhost ~ $ which git-shell
/usr/bin/git-shell
gns@localhost ~ $ file /usr/bin/git-shell
/usr/bin/git-shell: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV),
dynamically linked (uses shared libs), for GNU/Linux 2.6.9, stripped