Korn Shell Programming by Example

set

Official Description

Sets shell options.

Syntax

set [+ | -abCefhkmnopstuvx] [+ | -o option ...] [+ | -A name] [argument ...]

Options

-A name prepares a variable for array assignment.

-f disables filename generation.

-h causes each command to become a tracked alias when it's first encountered.

-o provides lots of options, including emacs, vi, noclobber, xtrace, verbose, ignoreeof, and so on.

-v prints shell input lines as they are read.

-x prints commands and their arguments as they are executed.

Oddities

Other arguments are positional parameters and are assigned, in order, to $1, $2, and so on.

Example

 $ set den cheryl # Set up positional parameters using set $ $ print $1 $2 den cheryl $ $ print $- # Show currently set options (interactive, ...