gistfile1.sh

#!/bin/sh

# Script to generate a gitolite style key directory from existing
# authorized_keys files. Supports multiple key files.
#
# IN: /home/*/.ssh/authorized_keys files
# OUT:
#     keydir/
#     keydir/user1
#     keydir/user1/1/user.pub
#     keydir/user1/2/user.pub
#     keydir/user1/3/user.pub
#     keydir/user1/4/user.pub
#     keydir/user2
#     keydir/user2/1/user.pub
#     keydir/user3
#     keydir/user3/1/user.pub
#     keydir/user3/2/user.pub
#
# TODO:
#   - If a .ssh directory is not readable, it will be silently ignored.
#
# Permissions can be fixed on /home with:
# # chmod a+rX /home/* && chmod a+rX /home/*/.ssh && chmod a+r /home/*/.ssh/authorized_keys


git pull

keydir=keydir
rm -rf ${keydir}
for file in `ls /home/*/.ssh/authorized_keys`; do
    count=1
    user=`echo $file | cut -d / -f 3`
    cat ${file} | sort | uniq | while read line; do

        # Skip lines that do not begin with "ssh-"
        if [ ! $(echo ${line} | cut -c 1-4) = "ssh-" ]; then
            continue
        fi

        # Add the keys
        mkdir -p ${keydir}/${user}/${count}
        echo ${line} > ${keydir}/${user}/${count}/${user}.pub
        count=`expr $count + 1`
    done
done

git add keydir
git commit -a -m "Update keydir" && git push