cron-mailonfailure

   1 #!/bin/bash
   2 #
   3 # cron-mailonfailure:
   4 #    Run the provided command, capturing stdin&stdout in a tmpfile.
   5 #    If the command succeeds, discard, exit.
   6 #    If the command errors out, send an email with a good subject.
   7 #
   8 # Author: Martin Langhoff <martin.langhoff@gmail.com>
   9 # License: GPLv2
  10
  11 mailto=$1
  12 shift
  13
  14 # logfilename
  15 logfile=$(mktemp)
  16 cmdstring="$@"
  17 echo "Running $cmdstring" > ${logfile}
  18 "$@" &>>${logfile}
  19 exitcode=$?
  20 if [[ $exitcode -ne 0 ]]; then
  21     echo "Exited with $exitcode" >> ${logfile}
  22     cat ${logfile} | mailx -s "$(hostname -s): Error running $cmdstring"  "${mailto}"
  23 fi
  24
  25 rm ${logfile}
  26
  27 # propagate exitcode up the call chain
  28 # in case our caller cares about success/failure
  29 exit $exitcode