This is the command trueposix that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator
PROGRAM:
NAME
true — return true value
SYNOPSIS
true
DESCRIPTION
The true utility shall return with exit code zero.
OPTIONS
None.
OPERANDS
None.
STDIN
Not used.
INPUT FILES
None.
ENVIRONMENT VARIABLES
None.
ASYNCHRONOUS EVENTS
Default.
STDOUT
Not used.
STDERR
Not used.
OUTPUT FILES
None.
EXTENDED DESCRIPTION
None.
EXIT STATUS
Zero.
CONSEQUENCES OF ERRORS
None.
The following sections are informative.
APPLICATION USAGE
This utility is typically used in shell scripts, as shown in the EXAMPLES section. The
special built-in utility : is sometimes more efficient than true.
EXAMPLES
This command is executed forever:
while true
do
command
done
RATIONALE
The true utility has been retained in this volume of POSIX.1‐2008, even though the shell
special built-in : provides similar functionality, because true is widely used in
historical scripts and is less cryptic to novice script readers.
FUTURE DIRECTIONS
None.
Use trueposix online using onworks.net services
