Shell Programming and Scripting

Hi can someone please help me on this.

I need to perform this code:


Grep any lines that meets the following criteria

(A AND B) OR (A AND C)



I tried this code, but it didn't work


Grep-I "A &&B" | "A&&C" *.* [~/foldername]$


thanks in advance

you want this..
or... this..

here is an alternate way to do it with awk.

Code:

awk '/A/ && /B/ || /A/ && /C/' filename

try this also ...

egrep '(A)(B|C)' input_file

Regards

by the way i am using cygwin
awk '/A/ && /B/ || /A/ && /C/' filename didnt work
also

gawk '/A/ && /B/ || /A/ && /C/' filename didnt work

Basically any lines in the files that has A AND ( B OR C)

This is the input format

Line1 x y A
Line2 A z D
Line3 A B P
Line4 C A B



Desired output:
Line3 A B P
Line4 C A B



Many files and they are huge.. (200 to 300 Gbyes)

Is there any way that I can get the output in a most efficient (fast) way

Thanks

thanks , but egrep didnt work for me

error message " egrep is not recognized as an internal or external command"

could this be , due to cygwin??

ya i think in cygwin only simple grep works.....