summaryrefslogtreecommitdiffstats
path: root/tests/exec6.sub
blob: 50d0e70125bd11288cb011bc660e5ef43b87083d (plain)
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
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
# builtins with exit status inverted

( true )
echo $?
( ! true )
echo $?

( false )
echo $?
( ! false )
echo $?

# inverting shouldn't affect exit
(exit 42)
echo $?

( ! exit 42 )
echo $?

# commands requiring an exec with exit status inverted -- broken in bash-2.04

( ls > /dev/null 2>&1 )
echo $?
( ! ls > /dev/null 2>&1 )
echo $?

touch /tmp/notwrite
chmod 400 /tmp/notwrite

# make sure redirection failures in commands whose exit status is inverted
# are handled correctly

( ls > /tmp/notwrite ) 2>/dev/null
echo $?

( ! ls > /tmp/notwrite ) 2>/dev/null
echo $?

# now add exit traps, true and false for commands with and without exit
# status inversion

(trap 'false' 0 ; ! ls > /tmp/notwrite ) 2>/dev/null
echo $?

(trap 'false' 0 ; ls > /tmp/notwrite ) 2>/dev/null
echo $?

(trap 'true' 0 ; ! ls > /tmp/notwrite ) 2>/dev/null
echo $?

(trap 'true' 0 ; ls > /tmp/notwrite ) 2>/dev/null
echo $?

rm -f /tmp/notwrite