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Need awk to extract lines and sort

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# 8  
Old 10-11-2009
Quote:
Originally Posted by genehunter
Hi,
That worked!
Thanks to durden_tyler, pravin27 and ripat.
Once again, thanks for helping me out. I am not a programmer, but a biologist, kind of masquerading as a bioinformatician; purely due to necessity rather than choice.
This forum has been of so much use to me.
Code:
awk 'NR==1 || $5=="ADD"'

Can you please tell me what the two pipes do?
Is that the (OR) operator?
These are not pipes but the logical operator for OR. In pseudo code this would mean:

if line number equal 1 OR 5th field equal "ADD" ...
# 9  
Old 10-11-2009
Quote:
Originally Posted by genehunter
Can you please tell me what the two pipes do?
Is that the (OR) operator?
Yep,

Code:
NR==1

means the first record

Code:
$5=="ADD

Means if field five equals "ADD"
# 10  
Old 10-12-2009
Code:
awk '$5=="ADD"' a.txt | sort -n +8

# 11  
Old 10-12-2009
Genehunter, i might be wrong but when i see your input file, it seems you are getting the data from the database (tables). If so, then all your requirements can be done in the query which fetches the data from the tables itself...
# 12  
Old 10-12-2009
Quote:
Originally Posted by mac4rfree
Genehunter, i might be wrong but when i see your input file, it seems you are getting the data from the database (tables). If so, then all your requirements can be done in the query which fetches the data from the tables itself...
Actually they are not from a db. These are output files from genetic analysis. But thaks for that thought. Perhaps I should try a database to get around some of these quirks.Smilie but awk has been awesome...! Smilie
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