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Command: false | Section: 1 | Source: Digital UNIX | File: false.1.gz
true(1) General Commands Manual true(1)
NAME
true, false - Returns a standard exit value
SYNOPSIS
true
false
STANDARDS
Interfaces documented on this reference page conform to industry stan-
dards as follows:
false: XPG4, XPG4-UNIX
true: XPG4, XPG4-UNIX
Refer to the standards(5) reference page for more information about in-
dustry standards and associated tags.
DESCRIPTION
The true command returns a 0 (zero) exit value. The false command re-
turns a nonzero exit value. These commands are usually used in input to
shell commands.
NOTES
The special built-in utility : (colon) is sometimes more efficient than
the true command.
EXIT STATUS
[DIGITAL] The nonzero value returned by the false command may vary
from system to system.
EXAMPLES
To construct a loop in a shell procedure, enter: while true do
date sleep 60 done
This procedure displays the date and time once a minute. To stop it,
press the Interrupt key sequence.
SEE ALSO
Commands: csh(1), ksh(1), Bourne Shell sh(1b), POSIX shell sh(1p)
Standards: standards(5)
true(1)