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|
#!/bin/bash
# update-all version #VERSION#
# updates all clients defined in #ETCDIR#/update-all.conf via local versions of update-me
. #ETCDIR#/update-all.conf
usage() {
>&2 printf 'usage:\n'
>&2 printf ' %s\n' "${0##*/}"
>&2 printf ' %s -c\n' "${0##*/}"
>&2 printf ' %s $id $tmpdir [cs]\n' "${0##*/}"
exit 1
}
if [ "$#" -eq 3 ]; then
system="${systems["$1"]}"
if [ "${system}" == "localhost" ]
then
cmd=""
else
cmd="ssh -t -t ${system}"
fi
cmd="${cmd} update-me"
case "$3" in
'c')
delay=1
while sleep ${delay}; do
${cmd} -c </dev/null
err=$?
if [ "${err}" -ne 1 ]; then
break
fi
if [ ${delay} -lt 10 ]; then
delay=$((delay+1))
fi
done
;;
's')
${cmd} -s
err=$?
if [ "${err}" -ne 0 ] \
&& [ -d "$2" ]; then
printf '%s\n' "${err}" > "$2/$1"
fi
;;
*)
usage
;;
esac
exit ${err}
fi
if [ "$#" -eq 1 ] \
&& [ "x$1" = 'x-c' ]; then
for system in "${!systems[@]}"; do
screen -S update-clear-all -d -m "${0}" "${system}" "${tmp_dir}" 'c'
done
exit
fi
if [ "$#" -ne 0 ]; then
usage
fi
tmp_dir=$(mktemp -d)
trap 'rm -rf --one-file-system "${tmp_dir}"' EXIT
pids=()
for system in "${!systems[@]}"; do
if [ -z "${DISPLAY}" ]; then
screen -S update-all -d -m "${0}" "${system}" "${tmp_dir}" 's'
else
urxvt -title "${systems["${system}"]}: update-me" -e "${0}" "${system}" "${tmp_dir}" 's' &
pids+=($!)
fi
screen -S update-clear-all -d -m "${0}" "${system}" "${tmp_dir}" 'c'
done
if [ -z "${DISPLAY}" ]; then
sleep 1
pids=(
$(
screen -list \
| sed '
s/^\s\+\([0-9]\+\)\.update-all\s.*$/\1/
t
d
'
)
)
fi
while [ -n "${pids[*]}" ]; do
if [ -z "${DISPLAY}" ]; then
for pid in "${pids[@]}"; do
if ! kill -0 "${pid}" >/dev/null 2>&1; then
continue
fi
npids+=("${pid}")
screen -r "${pid}"
done
pids=("${npids[@]}")
else
sleep 1
fi
pids=(
$(
for pid in "${pids[@]}"; do
if kill -0 "${pid}" >/dev/null 2>&1; then
printf '%s\n' "${pid}"
fi
done
)
)
done
ls "${tmp_dir}" \
| while read -r system; do
err=$(
cat "${tmp_dir}/${system}"
)
if [ "${err}" -ne 0 ]; then
printf 'update-me on "%s" failed: %s\n' \
"${systems["${system}"]}" \
"${err}"
fi
done
exit $(
find "${tmp_dir}" -type f \
-exec grep -lxFv '0' {} + \
| wc -l
)
|
