sagent.mac

#!/bin/bash

# SAGENT starts an SSH agent if my user doesn't already have one running.
# It first looks up ssh-agent processes associated with my user and sets
# the environment variable associated with it so the terminal recognizes it.
# If it doesn't find on, it starts one.

# This script gets sourced in my bashrc/zshrc.

# The difference between this and the linux version is that
# for some reason, ssh-agent ignores `-a` (bind address) on OSX.
# Therefore we don't set the bind address manually.
# And the time limit is longer.

AGENTFOUND=0

for agentsocket in $(pgrep -f -n -u $(whoami) "ssh-agent -s") ; do
    AGENTFOUND=1
    export SSH_AGENT_PID=$agentsocket
    break
done

# If at this point we still haven't located an agent, it's time to
# start a new one
if [ $AGENTFOUND = 0 ] ; then
    eval "$(ssh-agent -s -a ~/.ssh/ssh-agent.sock -t 18h)"
    export SSH_AGENT_PID=$SSH_AGENT_PID
fi
export SSH_AUTH_SOCK=~/.ssh/ssh-agent.sock
echo "Agent set: ${SSH_AGENT_PID}"