NAME
or - conditionally execute a command
Synopsis
COMMAND1; or COMMAND2
Description
The or builtin is used to execute a command if
the current exit status (as set by the last previous command) is
not 0.
The or command does not change the current exit status.
The exit status of the last foreground command to exit can
always be accessed using the $status variable.
Example
The following code runs the make command to build a
program, if the build succceds, the program is installed. If either
step fails, make clean is run, which removes the files created by
the build process
make; and make install; or make clean