Short script for generating ssh config file.

ssh-init-config.sh

#!/bin/bash

sshdir="$HOME/.ssh"
# All keys should end in _rsa with their respective lock ending in _rsa.pub
keys=`ls $sshdir | grep _rsa$`

# Clean old config
rm $sshdir/config

# Build new config
for key in $keys
do
    echo IdentityFile $sshdir/$key >> $sshdir/config
done