\section or or - Conditionally execute a command

\subsection or-synopsis Synopsis
 <tt>COMMAND1; or COMMAND2</tt>

\subsection or-description Description

The \c or builtin is used to execute a command if the current exit status (as set by the last previous command) is non-zero

The or command does not change the current exit status.

\subsection or-example Example

The following code runs the \c make command to build a program, if the
build succceds, the program is installed. If either step fails,
<tt>make clean</tt> is run, which removes the files created by the
build process

<pre>
make; and make install; or make clean
</pre>