path: root/shell/hush_test/hush-invert/invert.tests (plain)
blob: 8393d95a43fd534716e25cb6a0bba0232029a927

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 $?
20