This manual page is part of the POSIX Programmer's Manual. The Linux
implementation of this interface may differ (consult the corresponding Linux
manual page for details of Linux behavior), or the interface may not be
implemented on Linux.
The true utility shall return with exit code zero.
The following sections are informative.
This utility is typically used in shell scripts, as shown in the EXAMPLES
section. The special built-in utility : is sometimes more efficient
This command is executed forever:
The true utility has been retained in this volume of POSIX.1‐2017,
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.
Section 2.9, Shell Commands, false
Portions of this text are reprinted and reproduced in electronic form from IEEE
Std 1003.1-2017, Standard for Information Technology -- Portable Operating
System Interface (POSIX), The Open Group Base Specifications Issue 7, 2018
Edition, Copyright (C) 2018 by the Institute of Electrical and Electronics
Engineers, Inc and The Open Group. In the event of any discrepancy between
this version and the original IEEE and The Open Group Standard, the original
IEEE and The Open Group Standard is the referee document. The original
Standard can be obtained online at http://www.opengroup.org/unix/online.html .
Any typographical or formatting errors that appear in this page
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