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Grep the column for a row

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# 1  
Old 07-11-2013
Grep the column for a row
I have a problem caught and need to discuss with all you guys.

I have a file containing a rows which are separated by “~”
For eg.
Code:
Server~321~UP~Linux~Member
121213~5778~Down~Unix~Provider

I want to use the grep which search the row on the basis of columns like the grep should only check the 2nd column of a file and if it found that the whole row should be published.
# 2  
Old 07-11-2013
It's easier to use awk:

Code:
awk -F~ '$2~/grep-pattern/' file

# 3  
Old 07-11-2013
I have a lot of folders which contain all the zipped files. So basically what I doing is
Code:
find . -name "Filename*" -print | while read line
do 
gzcat $line | ?????????????????
done

# 4  
Old 07-11-2013
If you don't like Subbeh's proposal, try
Code:
grep '^[^~]*~5778' file

where 5778 is your pattern in the second column.

And - ever looked into zgrep? man zgrep:
Quote:
DESCRIPTION
Zgrep invokes grep on compressed or gzipped files.
# 5  
Old 07-12-2013
Hi. I appreciate your idea. But I want to keep my scope to second column only.
I have a case in my data which looks like
Code:
server~99234~patched~99~down~done

and suppose I grep whether second column contains 99 or not. It does not contain but also this row will be published. Because 4th column contains 99, if you know what i mean.

Regards
ADI
# 6  
Old 07-12-2013
Quote:
Originally Posted by adisky123
Hi. I appreciate your idea. But I want to keep my scope to second column only.
I have a case in my data which looks like
Code:
server~99234~patched~99~down~done

and suppose I grep whether second column contains 99 or not. It does not contain but also this row will be published. Because 4th column contains 99, if you know what i mean.

Regards
ADI
No, it doesn't. The command:
Code:
grep '^[^~]*~5778' file

will print any line where the 2nd field STARTS with 5778. If you only want it to match when the 2nd field IS 5778, try:
Code:
grep '^[^~]*~5778~' file

If you used the command:
Code:
grep '^[^~]*~99' file

it didn't match the 4th field in the line:
Code:
server~99234~patched~99~down~done

it match the 99 in red.

If you want "contains 99" instead of "is 99", try:
Code:
grep '^[^~]*~[^~]*99' file

which would match any of the lines:
Code:
server~99234~patched~12~down~done
server~29934~patched~34~down~done
server~23994~patched~56~down~done
server~23499~patched~78~down~done

# 7  
Old 07-12-2013
Quote:
Originally Posted by adisky123
Hi. I appreciate your idea. But I want to keep my scope to second column only.
I have a case in my data which looks like
Code:
server~99234~patched~99~down~done

and suppose I grep whether second column contains 99 or not. It does not contain but also this row will be published. Because 4th column contains 99, if you know what i mean.

Regards
ADI
If 99 must be the exact pattern RubiC gave you the solution, you just have to adjust it to your needs.
Code:
grep '^[^~]*~99~' file

The trailing ~ will guarantee the match against other patterns with 99 included in the "second" column.
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