Academia.eduAcademia.edu

Chapter 1 -Introduction to Linux

 Commands built-in to the shell itself: A good example is the cd command as it is part of the bash shell. When a user types the cd command, the bash shell is already executing and knows how to interpret that command, requiring no additional programs to be started.  Commands that are stored in files that are searched by the shell: If you type a lscommand, then the shell searches through the directories that are listed in the PATH variable to try to find a file named ls that it can execute. These commands can also be executed by typing the complete path to the command.  Aliases: An alias can override a built-in command, function, or a command that is found in a file.

This document is currently being converted. Please check back in a few minutes.