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The Korn shell, or ksh, was originally developed by David Korn of AT&T Bell Laboratories in 1982.

Setting up the Korn shell to your liking is relatively simple: While logged in under ksh, view your current settings by using the -o switch with the set:

set -o:
* bgnice: Run all processes in the background at a lower priority.
* emacs: When editing the command-line text entered, use the emacs-style inline editor.
* gmacs: When editing the command-line text entered, use the gmacs-style inline editor.
* ignoreeof: Ignore end-of-file characters, and do not exit the shell.
  If the user wants to exit, the user must type the exit command or press Control-D 11 times.
* markdirs: Place a forward slash (/) on the end of all directories that are from a file name substitution.
* monitor: Run all processes in the background,and inform the user when the process has finished by printing a line to stdout.
* noexec: Do not execute the commands. Instead, just check for syntax errors.
* restricted: Run a restricted shell. Users cannot change directories; change their SHELL, ENV, or PATH variables.
  Cannot execute a command that contains a forward slash (/) in the pathname; or redirect output.
 * vi: When editing the command-line text entered, use the vi-style inline editor.

To turn options on with the built-in command set, use the -o switch. If you change your mind, you can turn off the options you set by using the +o switch, instead.

esc + \        filename completion


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