exec9.sub

android-w.song.android.widget

# make sure commands before the last one in the pipeline can't change $?
false
false | echo $?
false
(false) | echo $?

false
true | echo $?
false
(true) | echo $?

true
false | echo $?
true
(false) | echo $?

true
true | echo $?
true
(true) | echo $?