Red Hat ENTERPRISE LINUX WS 2.1 - Guide d'installation télécharger pdf (Page 223)

Important Linux features 223

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INDEX

PS1=’\W’

e) certain characters, e.g.:

PS1=hello or PS1=% or PS1=’>’

f) a combinations of the items above, e.g.:

PS1=’\h:\w>’

in case of the last example the prompt will look like:

<hostname> : /u/data/guest >

3. save the file and leave the editor

4. log out and log in again to see the effect of the change

The second prompt can be set be defining the variable PS2.

If you want to read the manual pages for the bash, type: man bash

13.4 How to avoid much typing in Linux

13.4.1 General

1. use environment variables, e.g.:

NMR=/opt/topspin/data/usera/nmr

export NMR

these 2 lines can be entered in your file .bashrc

Open a new shell and type cd $NMR to go to the corresponding directory.

2. use Linux functions, e.g.:

data()

{

cd /opt/topspin/data/usera/nmr

}

1. characters which have a special meaning in Linux, e.g. < , >, \ , and ; must be quoted

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Red Hat ENTERPRISE LINUX WS 2.1 - Guide d'installation Page 223