/usr/share/blends/blend-utils is in blends-common 0.6.96.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36  | # For error codes check in /usr/include/sysexits.h
toLower() {
	echo $@ | tr "[A-Z]" "[a-z]"
	return 0
}
# log (typically echos on stdout)
blendLog() {
	echo $@
	return 0
}
# log error (typically echos on stderr)
blendErr() {
	RET=$1
	shift
	echo "err ${RET}: $@" > /dev/stderr
	return 0
}
# log on stderr for debug outputs
blendDebug() {
	test -n "${DEBUG}" && echo "debug: $@" > /dev/stderr
	return 0
}
# log error and return a fail code $1
blendFail() {
	RET=$1
	shift
	echo "err ${RET}: $@" > /dev/stderr
	exit ${RET}
}
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