iankelling.org Git - log-quiet/blob - logmail

   1 #!/bin/bash
   2 # I, Ian Kelling, follow the GNU license recommendations at
   3 # https://www.gnu.org/licenses/license-recommendations.en.html. They
   4 # recommend that small programs, < 300 lines, be licensed under the
   5 # Apache License 2.0. This file contains or is part of one or more small
   6 # programs. If a small program grows beyond 300 lines, I plan to switch
   7 # its license to GPL.
   8
   9 # Copyright 2024 Ian Kelling
  10
  11 # Licensed under the Apache License, Version 2.0 (the "License");
  12 # you may not use this file except in compliance with the License.
  13 # You may obtain a copy of the License at
  14
  15 #     http://www.apache.org/licenses/LICENSE-2.0
  16
  17 # Unless required by applicable law or agreed to in writing, software
  18 # distributed under the License is distributed on an "AS IS" BASIS,
  19 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  20 # See the License for the specific language governing permissions and
  21 # limitations under the License.
  22
  23
  24 case $1 in
  25   -h|--help)
  26     cat <<'EOF'
  27 usage: logmail CMD [ARGS...]
  28
  29 Send mail in case of output or failure of CMD
  30
  31 Emails to $MAILTO or if unset, $USER@localhost
  32 EOF
  33     exit 0
  34     ;;
  35 esac
  36 t=$(mktemp)
  37 code=0
  38 "$@" &>"$t" || code=$?
  39 if (( code )) || [[ -s $t ]]; then
  40   mail -s "$HOSTNAME: code: $code cmd: $*" $mailto <"$t"
  41   rm "$t"
  42 fi
  43 exit 0