| | 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== |
projects / BK-2020-03.git / blame_incremental