[thirdparty/bash.git] / tests / invert.tests

# tests of return value inversion
# placeholder for future expansion

# user subshells (...) did this wrong in bash versions before 2.04

! ( echo hello | grep h >/dev/null 2>&1 ); echo $?
! echo hello | grep h >/dev/null 2>&1 ; echo $?

! true ; echo $?
! false; echo $?

! (false) ; echo $?
! (true); echo $?

! true | false ; echo $?
! false | true ; echo $?

! (true | false) ; echo $?
! (false | true) ; echo $?
Commit	Line	Data
bb70624e JA	1	# tests of return value inversion
	2	# placeholder for future expansion
	3
	4	# user subshells (...) did this wrong in bash versions before 2.04
	5
	6	! ( echo hello \| grep h >/dev/null 2>&1 ); echo $?
	7	! echo hello \| grep h >/dev/null 2>&1 ; echo $?
	8
	9	! true ; echo $?
	10	! false; echo $?
	11
	12	! (false) ; echo $?
	13	! (true); echo $?
	14
	15	! true \| false ; echo $?
	16	! false \| true ; echo $?
	17
	18	! (true \| false) ; echo $?
	19	! (false \| true) ; echo $?