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#!/bin/bash
usage() {
echo
echo Usage: "${0}" "[options]" "[user@]host" "[identity-file]"
echo
echo " -h, --help, --usage display this text"
echo " -n <[user@]host>, --via <[user@]host>"
echo " establish connection via"
echo " specified account"
exit 1
}
gop=`getopt -o n:h --long via:,help,usage -n propakey -- "$@"`
[ $? = 0 ] || usage
eval set -- "${gop}"
via=""
while true ; do
case "$1" in
-n|--via) via="$2" ; shift 2 ;;
-h|--help|--usage) echo "usage" ; usage ;;
--) shift ; break ;;
*) echo "Huh" ; usage ;;
esac
done
dest="$1"
[ -z "${dest}" ] && usage
keyfile="${2}"
if [ -e "${keyfile}.pub" ] ; then
keyfile="${keyfile}.pub"
else
if [ -e "${HOME}/.ssh/${keyfile}.pub" ] ; then
keyfile="${HOME}/.ssh/${keyfile}.pub"
else
if [ ! -z "${keyfile}" ] ; then
echo "Identity file not found"
exit 2
fi
for f in ${HOME}/.ssh/{id_dsa,id_rsa,identity}.pub ; do
if [ -e $f ] ; then
keyfile="$f"; break;
fi
done
fi
fi
echo "Propagating ssh key to ${dest}"
[ -z "${via}" ] || echo " via ${via}"
echo "Using identity file '${keyfile}'"
read kt k r <"${keyfile}"
cmd="ssh ${dest} \
\"/bin/bash -c '\
umask 077 ;\
test ! -d .ssh && (mkdir .ssh || exit 1) ;\
( test -r .ssh/authorized_keys && grep -q ${k} .ssh/authorized_keys </dev/null) || ( echo Installing ssh key ; cat >> .ssh/authorized_keys ) \
'\"" <"${keyfile}"
if [ -z "${via}" ] ; then
eval ${cmd} <"${keyfile}"
else
ssh ${via} ${cmd} <"${keyfile}"
fi
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