HP-UX Reference (11i v1 05/09) - 1 User Commands N-Z (vol 2)

t
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
do
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.
SEE ALSO
csh(1), ksh(1), sh(1), sh-bourne(1), sh-posix(1).
STANDARDS CONFORMANCE
true: SVID2, SVID3, XPG2, XPG3, XPG4, POSIX.2
false: SVID2, SVID3, XPG2, XPG3, XPG4, POSIX.2
Section 1−−992 Hewlett-Packard Company − 1 − HP-UX 11i Version 1: September 2005