grep for multiple patterns


 
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# 8  
Old 12-01-2009
@skmdu and @rdcwayx

I tried both ways and got correct results for rdcwayx's command.

skmdu's command gave 'either' kind of results.
rdcwayx' command gave 'both' kind of results.

Thanks all.
# 9  
Old 12-01-2009
Code:
awk '/XX/&&/ZZ/' infile

should suffice. No need for the -F thingies.

If one key is always in a different field than the other then this should also work:
Code:
grep "XX.*ZZ" infile


Last edited by Scrutinizer; 12-01-2009 at 07:17 AM..
# 10  
Old 12-01-2009
Quote:
Originally Posted by skmdu
@rdcwayx,

Can you please what is wrong in that grep command ?

---------- Post updated at 03:10 AM ---------- Previous update was at 03:09 AM ----------

@rdcwayx,

Can you please tell, what is wrong in that grep command ?
Ok, I give the wrong sample to make your confused. Now I explain it again.

The request from tene is : need find out both XX and ZZ in one line.

So, if run your command:

Code:
grep -e "XX" -e "ZZ" urfile
XX=123|YY=222|ZZ=566
XX=123|YY=222|Zx=566

you will see the second line is incorrect. You command is same as

Code:
grep -E "XX|ZZ" urfile



---------- Post updated at 01:44 PM ---------- Previous update was at 01:42 PM ----------

Quote:
Originally Posted by Scrutinizer

If one key is always in a different field than the other then this should also work:
Code:
grep "XX.*ZZ" infile

not really, I also think to use grep by XX.*ZZ at first, but if ZZ is before XX, you will not get the correct answer.

Last edited by rdcwayx; 12-01-2009 at 02:50 PM..
# 11  
Old 12-01-2009
Quote:
Originally Posted by rdcwayx
not really, I also think to use grep by XX.*ZZ at first, but if ZZ is before XX, you will not get the correct answer.
Correct, one has to follow the other, perhaps I did not write that clear enough.

Last edited by Scrutinizer; 12-01-2009 at 06:46 PM..
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