[PLUG] Forgot...

[gabriel rosenkoetter <gr@eclipsed.net>]

... this.

-- 
gabriel rosenkoetter
gr@eclipsed.net

#!/bin/sh
#
####
# Copyright (c), 2001 gabriel rosenkoetter.
#
# Feel free to use, modify, and redistribute this. I'm not silly
# enough to imagine that this is hard enough that someone else
# wouldn't come up with it originally, but do me the favor of leaving
# my copyright notice if you're just handing my script around. Thanks.
####
# usage:
#
#  agent-keeper [program]
#
# ... where [program] is whatever you want to have a conception of
# your ssh-agent (if you leave it blank, ${SHELL} will be used).
#
# If there's no ssh-agent running, it wasn't agent-keeper that started
# the existing ssh-agent(s), or ${AF} references a stale ssh-agent
# (that is, the ${SSH_AUTH_SOCK} listed in it doesn't reference a
# useable named socket), a new ssh-agent is started and ssh-add is
# fed ${KEYS} (it will ask you for passphrases if your keys need
# them; with a proper ssh-add implementation, it will launch
# x11-ssh-askpass or similar to get the keys when it doesn't have a
# useable tty, as it won't if you've done all this from your X11,
# OpenWindows, whatever setup).
#
# If, on the other hand, an existing ssh-agent is found, the correct
# ${ENV} settings are made and handed to the child of agent-keeper.
# (This is by far the more usual case.)
#
# You're likely to want to change the ${SHELL} and ${KEYS} settings,
# you might as well leave ${AF} alone as long as it doesn't collide
# with other software you're using.

SHELL=`which zsh`
KEYS="${HOME}/.ssh/id_dsa ${HOME}/.ssh/id_rsa1"
AF=${HOME}/.ssh-agent

# You probably don't need to change anything below this.

if [ "x$1" = "x" ]; then
	EXEC="exec ${SHELL}"
else
	EXEC="exec $1"
fi

if [ -f ${AF} ]; then
	# We've got a stored agent file...
	eval `cat ${AF}`
	if [ -r ${SSH_AUTH_SOCK} \
		-a -S ${SSH_AUTH_SOCK} \
		-a -O ${SSH_AUTH_SOCK} ]; then
		# ... and it seems to apply to a useful ssh-agent.
		${EXEC}
	fi
fi

# Didn't find an extant, working ssh-agent socket
ssh-agent > ${AF}
eval `cat ${AF}`
ssh-add ${KEYS}
${EXEC}

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