1true(1) User Commands true(1)
2
3
4
6 true, false - provide truth values
7
9 true
10
11
12 false
13
14
16 The true utility does nothing, successfully. The false utility does
17 nothing, unsuccessfully. They are typically used in a shell script sh
18 as:
19
20 while true
21 do
22 command
23 done
24
25
26
27 which executes command forever.
28
30 true has exit status 0.
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32
33 false always will exit with a non-zero value.
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36 See attributes(5) for descriptions of the following attributes:
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38
39
40
41 ┌─────────────────────────────┬─────────────────────────────┐
42 │ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
43 ├─────────────────────────────┼─────────────────────────────┤
44 │Availability │SUNWcsu │
45 ├─────────────────────────────┼─────────────────────────────┤
46 │Interface Stability │Standard │
47 └─────────────────────────────┴─────────────────────────────┘
48
50 sh(1), attributes(5), standards(5)
51
52
53
54SunOS 5.11 1 Feb 1995 true(1)