~/.ssh/conf.d の中の設定ファイルを結合してからsshを叩くシェルスクリプト

ssh

#!/bin/bash

#
# ssh (concatenating split config file)
#
# Copyright (c) 2014 Takuma Nakajima
#  
# This software is released under the MIT License.
# http://opensource.org/licenses/mit-license.php
#

CONFIG_ON_MEMORY=/dev/shm/$USER-ssh-config
CONFIG_PATH=$HOME/.ssh/config
CONFIG_DIR=$HOME/.ssh/conf.d

which ssh >/dev/null 2>&1

# check if ssh exists
if [ $? -ne 0 ]; then
    echo "ssh does not exists or is not in \$PATH."
    exit 1
fi

# create ~/.ssh/config as a symlink to /dev/shm/ssh-config
if [ ! -e $CONFIG_PATH ]; then
    echo 'creating symlink'
    ln -s $CONFIG_ON_MEMORY $CONFIG_PATH
fi

# exit if ~/.ssh/config is not a symlink
if [ ! -L $CONFIG_PATH ]; then
    echo "ERROR: $CONFIG_PATH is not a symbolic link."
    exit 1
fi

# delete and regenerate config on memory
rm -rf $CONFIG_ON_MEMORY
touch $CONFIG_ON_MEMORY
chmod 600 $CONFIG_ON_MEMORY
for config in `find $CONFIG_DIR -type f`; do
    cat $config >> $CONFIG_ON_MEMORY
    echo >> $CONFIG_ON_MEMORY
    echo >> $CONFIG_ON_MEMORY
done

# generate ssh command
SSH_COMMAND="/usr/bin/ssh -F $CONFIG_ON_MEMORY"
while [ -n "$1" ]; do
    SSH_COMMAND="$SSH_COMMAND \"$1\""
    shift
done

# spawn the command
eval $SSH_COMMAND