[przemoc]

ABS can be handy for some quick look up, but if you want to learn Bash then go with Greg's Bash Guide:

http://mywiki.wooledge.org/BashGuide

Check also the list of Bash online tutorials:

http://wiki.bash-hackers.org/scripting/tutoriallist

[mbubb]

Thanks for the link to Gregg's BASH guide. Useful information.