[Previous] [Contents] [Index] [Next]

Caution: This version of this document is no longer maintained. For the latest documentation, see http://www.qnx.com/developers/docs.

true

Return true value (POSIX)

Syntax:

true

Options:

None.

Description:

The true utility does nothing but exit immediately with a zero exit code.

The true utility is typically used in shell scripts. One common application is to create an infinite loop, as in:

while true
do
   myprogram
   sleep 300
done

which runs myprogram every five minutes (300 seconds) until the shell script is interrupted.

The shell has a builtin true command; see ksh. To make sure you use the executable, specify the full path.

Exit status:

0

See also:

false, ksh


[Previous] [Contents] [Index] [Next]