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ubixos / bin / sh / tests / builtins / trap6.0

Charlie Root on 16 Jan 2018 308 bytes BSD Shell

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# $FreeBSD: releng/11.1/bin/sh/tests/builtins/trap6.0 217472 2011-01-16 13:56:41Z jilles $

v=$(
	${SH} -c 'trap "echo ok; exit" USR1; kill -USR1 $$' &
	# Suppress possible message about exit on signal
	wait $! >/dev/null 2>&1
)
r=$(kill -l $?)
[ "$v" = "ok" ] && { [ "$r" = "USR1" ] || [ "$r" = "usr1" ]; }