#!/bin/bash
# Copyright (C) 2016 Ian Kelling

# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at

#     http://www.apache.org/licenses/LICENSE-2.0

# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

case $1 in
    -h|--help)
        cat <<'EOF'
usage: logmail CMD [ARGS...]

Send mail in case of failure of CMD
EOF
        exit 0
        ;;
esac

t=$(mktemp)
if ! "$@" &>"$t"; then
    mail -s "$HOSTNAME: $*" $USER@localhost <"$t"
    rm "$t"
fi
exit 0