Gitseer is a small user-management DSL for GIT repositories.
This script is a rough bash port of a ruby script made by Richard Taylor at moocode.com.
You can read more about it here:
https://moocode.com/posts/6-code-your-own-multi-user-private-git-server-in-5-minutes
command="/opt/gitseer/bin/gitseer username rw",no-port-forwarding,no-X11-forwarding,no-agent-forwarding,no-pty ssh-rsa AAA...