Quick Guide to bash Commands
IN THIS APPENDIX
Viewing the bash built-in commands
Reviewing GNU additional shell commands
Looking at bash environment variables
As you've seen throughout this book, the bash shell contains lots of features and thus has lots of commands available. This appendix provides a concise guide to allow you to quickly look up a feature or command that you can use from the bash command line or from a bash shell script.
Reviewing Built-In Commands
The bash shell includes many popular commands built into the shell. This provides for faster processing times when using these commands. Table A-1 shows the built-in commands available directly from the bash shell.
The built-in commands provide higher performance than external commands, but the more built-in commands that are added to a shell, the more memory it consumes with commands that you may never use. The bash shell also contains external commands that provide extended functionality for the shell. These are discussed in the following section.
Looking at Common bash Commands
In addition ...