Red Hat ENTERPRISE LINUX WS 2.1 - Guia de Instalação descarregar pdf (Página 221)

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• offers the user a way to communicate with the OS.

• is selected upon installation of a new user

Type echo $SHELL to find out which shell you use!

different Linux shells and the files executed during login:

• .profile

sh and bash (also executes .bashrc if it exists)

• .cshrc

csh and tcsh

Important differences between shells

• How do you set environment variables

sh and bash:

1. export variable=value

csh and tcsh:

1.setenv variable value

• tcsh and bash offer history substitution

you can use the arrow keys to repeat and modify previously entered commands.

13.3.1 How to use the bash

• Open a shell and type in commands

• How to repeat a previously entered command

1. use the arrow keys to get a command back

2. hit the Enter key to execute the command again

1. type man sh or man csh for more information on these shells

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Red Hat ENTERPRISE LINUX WS 2.1 - Guia de Instalação Página 221