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Linux Pocket Guide
book

Linux Pocket Guide

by Daniel J. Barrett
February 2004
Beginner content levelBeginner
200 pages
5h 40m
English
O'Reilly Media, Inc.
Content preview from Linux Pocket Guide

The Shell Versus Programs

When you run a command, it might invoke a Linux program (like who), or instead it might be a built-in command, a feature of the shell itself. You can tell the difference with the type command:

$ type who
who is /usr/bin/who
$ type cd
cd is a shell builtin

It is helpful to know what the shell provides versus what Linux does. The next few sections describe features of the shell.

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Publisher Resources

ISBN: 9780596806347Errata Page