[BK-2020-03.git] / unitproc / bktemp-yellDieTry

#!/bin/bash
# Desc: Defines bash functions yell(), die(), and try(), which are useful for
#   indicating where in a script an error occurs.
# Ref/Attrib: [1] Yell, Die, Try Three-Fingered Claw technique https://stackoverflow.com/a/25515370
# Depends: GNU Coreutils 8.30

#==BEGIN Define script parameters==
#==END Define script parameters==

#===BEGIN Declare local script functions===
yell() { echo "$0: $*" >&2; }
die() { yell "$*"; exit 111; }
try() { "$@" || die "cannot $*"; }
#===END Declare local script functions===

#==BEGIN sample code==
yell "This message should appear in stderr.";
try echo "This message should appear in stdout.";
try eeeecho "This message should appear in an error message in stderr.";
yell "This message should not appear because \"try eeeecho\" failed.";
#==END sample code==
Commit	Line	Data
0ed005b0 SBS	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==