My git user uses bash (so .bash_profile), but I think it should work the same for sh shell.
Full warning message:
***** WARNING *****
gl-setup is not in your $PATH.
Since gl-setup MUST be run from the PATH (and not as src/gl-setup or such),
you must fix this before running gl-setup. The simplest way is to add
PATH=/home/git/bin:$PATH
to the end of your bashrc or similar file. You can even simply run that
command manually each time you log in and want to run a gitolite command.
Run /home/git/gitolite/src/gl-system-install -h for a detailed usage message.