A couple of useful zsh functions

.zshrc

# Use ag and fzf to pick a result and open it in vim at the matching line, 
# plus show the ag results in the quickfix window (needs Ag plugin in your vim)
function agvim () {
	CHOICE=$(ag --color $* | fzf -0 -1 --ansi)
	if [ ! -z "$CHOICE" ]; then
		# Open vim at the selected file and line, but also run the Ag scan
		# the ! on Ag! stops Ag jumping to the first match, and the wincmd gives the editor window focus
		nvim $( echo "$CHOICE" | awk 'BEGIN { FS=":" } { printf "+%d %s\n", $2, $1 } ') +"Ag! '$*'" "+wincmd k"
	fi
}

# Make fzf a little more sensible
export FZF_DEFAULT_OPTS='-e'

# Repeatedly try to connect to a host which is booting
# ssh's return code is a little unhelpful as it doesn't distinguish the failure
# reason properly so this is a little naive
function try_ssh () {
	SUCCESS=0
	while [ $SUCCESS -eq 0 ]; do
		ssh -o "ConnectTimeout 30" $*
		RESULT=$?
		if [ $RESULT -ne 255 ]; then
			SUCCESS=1
		else
			echo "--> SSH return code was $RESULT"
			print "Waiting to retry ssh..."
			sleep 10
			echo "--> Retrying..."
		fi
	done
}

# Toggle the VPN state
function vpn () {
	if $( pgrep vpnc > /dev/null ); then
		echo "--> Disconnecting VPN"
		sudo /usr/local/sbin/vpnc-disconnect
	else
		echo "--> Connecting VPN"
		sudo /usr/local/sbin/vpnc
	fi
}