function help () {
cat <<EOF
-xremote.sh [-h remote_host] <script> [script arguments]
+xremote.sh [--help] [-h <remote_host>] [-i <remote_dir>] <script> [script arguments]
This script takes a script as argument and executes it remotely in a
temporary directory on a ssh-accessible server.
@XREMOTE_GET: *.dat
@XREMOTE_PRE: ln -s /home/fleuret/data/pytorch ./data
+ If a file with the same name as the script with the .xremote
+ extension appended to it exists, arguments will be read from it by
+ default.
+
If the -h option is provided @XREMOTE_HOST is ignored.
+ If the -i option is provided, all the files are installed and
+ scripts run in the specified directory on the remote host, but the
+ main executable and post-run commands are ignored
+
If no argument is provided to @XREMOTE_HOST, and the -h option is
not specified, the environment variable \$XREMOTE_HOST is used
instead
}
function cleanup_remote_tmp () {
- if [[ "${REMOTE_HOST}" ]] && [[ "${REMOTE_DIR}" ]]
+ if [[ "${REMOTE_HOST}" ]] && [[ "${REMOTE_DIR}" ]] && [[ ! "${ARG_DIR}" ]]
then
echo "xremote: Clean up remote workdir."
- ssh "${REMOTE_HOST}" "rm -rf \"${REMOTE_DIR}\""
fi
}
-h)
shift
ARG_HOST="$1"
+ [[ ${ARG_HOST} ]] || (echo "xremote: Hostname missing." && exit 1)
echo "xremote: remote forced to ${ARG_HOST}"
;;
+
+ -i)
+ shift
+ ARG_DIR="$1"
+ [[ ${ARG_DIR} ]] || (echo "xremote: Directory missing." && exit 1)
+ echo "xremote: remote dir set to ${ARG_DIR}"
+ ;;
+
+ --help)
+ help
+ exit 0
+ ;;
+
*)
- echo "Unknown option $1"
+ echo "xremote: Unknown option $1"
exit 1
;;
esac
######################################################################
-[[ -a "$1" ]] || (help && exit 1)
+[[ "$1" ]] || (echo "xremote: Script name missing" && exit 1)
-main="$(basename "$1")"
+[[ -a "$1" ]] || (help && echo >&2 "xremote: Cannot find script \`$1'" && exit 1)
cd "$(dirname "$1")"
+main="$(basename "$1")"
+main_config="${main}.xremote"
+
+if [[ -f "${main_config}" ]]
+then
+ echo "xremote: found ${main_config}"
+else
+ main_config="${main}"
+fi
+
shift
trap cleanup_remote_tmp EXIT
[[ "${REMOTE_HOST}" ]] || REMOTE_HOST="${value}"
[[ "${REMOTE_HOST}" ]] || REMOTE_HOST="${XREMOTE_HOST}"
[[ "${REMOTE_HOST}" ]] || (echo "xremote: No remote host specified." >&2 && exit 1)
- REMOTE_DIR="$(ssh </dev/null "${REMOTE_HOST}" mktemp -d /tmp/xremote.from_"$(hostname)_$(date +%Y%m%d-%H%M%S)".XXXXXX)"
+ if [[ "${ARG_DIR}" ]]
+ then
+ ssh </dev/null "${REMOTE_HOST}" "mkdir -p \"${ARG_DIR}\""
+ REMOTE_DIR="${ARG_DIR}"
+ else
+ REMOTE_DIR="$(ssh </dev/null "${REMOTE_HOST}" mktemp -d /tmp/xremote_\$\(whoami\)_from_"$(hostname)_$(date +%Y%m%d_%H%M%S)".XXXXXX)"
+ fi
echo "xremote: target is ${REMOTE_HOST}"
;;
esac
fi
-done < "${main}"
+done < "${main_config}"
######################################################################
tar c "${main}" | ssh "${REMOTE_HOST}" "cd \"${REMOTE_DIR}\" && tar mx"
+if [[ "${ARG_DIR}" ]]
+then
+ echo "xremote: everything has been set up in ${REMOTE_HOST}:${ARG_DIR}"
+ exit 0
+fi
+
echo "xremote: -- running the executable -----------------------------------"
if [[ "${REMOTE_EXEC}" ]]
######################################################################
# I find this slightly ugly ...
+
for s in "$@"
do
quoted_args="${quoted_args} \"${s}\""
;;
esac
fi
-done < "${main}"
+
+done < "${main_config}"
set +f