unitproc/bktemp-yellDieTry

   1 #!/bin/bash
   2 # Desc: Defines bash functions yell(), die(), and try(), which are useful for
   3 #   indicating where in a script an error occurs.
   4 # Ref/Attrib: [1] Yell, Die, Try Three-Fingered Claw technique https://stackoverflow.com/a/25515370
   5 # Depends: GNU Coreutils 8.30
   6
   7 #==BEGIN Define script parameters==
   8 #==END Define script parameters==
   9
  10 #===BEGIN Declare local script functions===
  11 yell() { echo "$0: $*" >&2; }
  12 die() { yell "$*"; exit 111; }
  13 try() { "$@" || die "cannot $*"; }
  14 #===END Declare local script functions===
  15
  16 #==BEGIN sample code==
  17 yell "This message should appear in stderr.";
  18 try echo "This message should appear in stdout.";
  19 try eeeecho "This message should appear in an error message in stderr.";
  20 yell "This message should not appear because \"try eeeecho\" failed.";
  21 #==END sample code==