A .bashrc script that automatically spawns ssh-agent and adds your identities upon first load

.bashrc

# This .bashrc snippet is primarily geared toward those who use Git Bash for 
# Windows. Save this file in the root of your user folder; e.g., C:\Users\jesse,
#  or /c/Users/jesse in Git Bash parlance. This app checks to see if ssh-agent 
# is running, and if it isn't, starts it and adds any private keys you desire. 
# It will only do this once per Windows session, or until ssh-agent is killed. 
# Now you don't have to keep loading your key or typing in your git remote 
# password repeatedly. I have no reason to believe this would not work equally 
# well in a Linux environment. Save it as (or append to) ~/.bashrc

SSH_ENV=~/.ssh/environment

function start_agent {
	echo "Initializing new SSH agent..."
	
	/usr/bin/ssh-agent | sed 's/^echo/#echo/' > "${SSH_ENV}"
	echo " success!"
	
	chmod 600 "${SSH_ENV}"
	. "${SSH_ENV}" > /dev/null
	
	/usr/bin/ssh-add ~/.ssh/id_rsa # or wherever your private keys are
	
	# Add as many private keys as you like, but be warned: ssh will try to 
	# establish a connections with each loaded identity, even the wrong ones.  
	# After so many fail, it will quit, even if you have the correct identity 
	# loaded, several private keys down the line.
	
	# If that happens, simply make your ssh connections with the -i flag. E.g.,
	# 	`ssh -i ~/path/to/id_rsa user@10.10.1.220`
}

if [ -f "${SSH_ENV}" ]; then
	 . "${SSH_ENV}" > /dev/null
	 ps -ef | grep ${SSH_AGENT_PID} | grep ssh-agent$ > /dev/null || {
		start_agent;
	}
else
	start_agent;
fi

# This will ensure that bash always starts in your project directory, saving
# you a couple "cd"s each time you start it. Change the path below as needed.
proj() {
	cd ~/git
}
proj