true.1 (2010 09)

true(1) true(1)

NAME

true, false - return exit status zero or one respectively

SYNOPSIS

true

false

DESCRIPTION

The command true does nothing, and returns exit code zero. The command

false does nothing, and

returns exit code one. They are typically used to construct command procedures.

RETURN VALUE

Exit values are:

0 always from true .

1 always from false .

EXAMPLES

This command loop repeats without end:

while true

command

done

WARNINGS

true is typically used in shell scripts. Some shells provide a built-in version of true (and

false) that

is more efﬁcient than the standalone versions.

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true(1) true(1) NAME true, false - return exit status zero or one respectively SYNOPSIS true false DESCRIPTION The command true does nothing, and returns exit code zero. The command false does nothing, and returns exit code one. They are typically used to construct command procedures. RETURN VALUE Exit values are: 0 1 always from true . always from false . EXAMPLES This command loop repeats without end: while true do command done WARNINGS true is typically used in shell scripts.
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(Notes) A (Notes) tA 2 Hewlett-Packard Company −1− HP-UX 11i Version 3: September 2010