diffrence between grep, sed, awk and egrep

Fond_of_Opensource · 08-18-2006, 02:23 AM

Whais the difference between grep, sed, awk and egrep commands?

Tinkster · 08-18-2006, 02:27 AM

grep and egrep are search tools, egrep with a more complex set of regular expressions.
sed is a stream editor, it's meant for on-the-fly replacement of text.
awk is pretty much a small programming language that revolves around text processing
and combines features of all of the above and more.

Cheers,
Tink

khaleel5000 · 08-18-2006, 07:54 AM

and usually the text man prefixxing any commands or things gives its manual (if manual is present try :-
man grep
man egrep etc in console and see

pixellany · 08-18-2006, 08:15 AM

Go to TLDP.org and download the Bash Scripting Guide: "Bash Guide for Beginners" by Machtelt Garrels. Very good intro to all such things.