set gitolite keys based on existing users

scankeys

#!/bin/bash
dir="$(mktemp -t -d "vcs-keys.XXXXXXXXXX")"
function _cleanup(){
        rm -rf "$dir"
}
trap _cleanup EXIT

while read passwd; do
        user="$(printf "%s" "$passwd"|cut -d: -f1)"
        home="$(printf "%s" "$passwd"|cut -d: -f6)"
        shell="$(printf "%s" "$passwd"|cut -d: -f7)"

        [ "${home#/home/}" = "$home" ] && continue
        [ "$shell" = "/bin/bash" -o "$shell" = "/bin/sh" ] || continue

        for keys in "$home/.ssh/authorized_keys" "$home/.ssh/authorized_keys2"; do
                [ -e "$keys" ] && break
        done
        [ -e "$keys" ] || continue

        n=0
        while read -r key; do
                n=$(( $n + 1 ))
                printf "%s\n" "$key" > "${dir}/${user}@authorized_keys-${n}.pub"
        done < <(grep '^ssh-' "$keys")
done < /etc/passwd

chown -R vcs "$dir" &&
cd /home/vcs &&
su -l -c '/home/vcs/bin/gl-setup-authkeys -batch '"$dir" vcs