EVAL(P) POSIX Programmer's Manual EVAL(P)
eval - construct command by concatenating arguments
eval [argument ...]
The eval utility shall construct a command by concatenating arguments together, separating each with a <space>. The constructed command
shall be read and executed by the shell.
See the DESCRIPTION.
The standard error shall be used only for diagnostic messages.
If there are no arguments, or only null arguments, eval shall return a zero exit status; otherwise, it shall return the exit status of the
command defined by the string of concatenated arguments separated by <space>s.
CONSEQUENCES OF ERRORS
The following sections are informative.
Special Built-In Utilities
Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Standard for Information Technol-
ogy -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 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 .
IEEE/The Open Group 2003 EVAL(P)