A quick script to add a public SSH key to the authorized_keys on another host

authorize-key

#!/bin/sh
set -e

if grep PRIVATE $1 >/dev/null; then
   echo "Use the public key ($1.pub), not the private one !"
   exit -1
fi

cat $1 | ssh $2 'umask 0077; mkdir -p .ssh; cat >> .ssh/authorized_keys && echo "Key $1 added to .ssh/authorized_keys on $2"'