Limit SSH User to a shell command

Question

My question is

how can I allow an user to ssh to my server with limitation to a shell command and a directory?

My situation

I\'m using git to dep

Answer 1

A simple command to disable the shell in a git user is to replace the /usr/bin/bash with /usr/bin/git-shell. Replace it in the /etc/password file or using the command:

usermod -s /usr/bin/git-shell [username]

Check this document from the official Git website: Setting Up the Server. Additional info if you want to have a shell on it but limiting it to a directory use: rbash. Same as git-shell just replace the user shell with it.