4295aff8bb38c55ddfb3b9764f989c0891672a18
[BK-2020-03.git] / 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==