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# 1  
Old 10-14-2009
AWK question

Hello everyone,

I have the following file:
Code:
# cat tmp
col1a col2a col3a
cola  col1a col2a
col3a col2b cola
col2a col3a col4a
colb  col2a colc

If I want to print lines where column 2 = col2a I can do something like:
Code:
# awk -v var=col2a ' var == $2 {print $0}' tmp
col1a col2a col3a
colb  col2a colc


Question: Any idea how I can print lines where column 2 = col2* ? (like the following desired output)
Code:
col1a col2a col3a
col3a col2b cola
colb  col2a colc


Last edited by cabrao; 10-14-2009 at 09:59 AM..
# 2  
Old 10-14-2009
Code:
awk '$2 ~ /col2/ {print $0}' d.txt

# 3  
Old 10-14-2009
Wrench

I think a requirement is to pass the text to search for as a variable.

This should do it:
Code:
awk -v var='col2' '$2 ~ var'

# 4  
Old 10-14-2009
Thanks for both answers they both work if I execute them in the command ligne however my goal is to pass the text to search for as a variable like pludi said.

In my script the following command isn't working: (where MY_VAR=col2a)

Code:
awk -F, -v var='${MY_VAR}' '$2 ~ /${var}/' tmp_file

Any idea?
# 5  
Old 10-14-2009
Quote:
Originally Posted by cabrao
Code:
awk -F, -v var='${MY_VAR}' '$2 ~ /${var}/' tmp_file

Any idea?
Remove the quote.
# 6  
Old 10-14-2009
Wrench Try this...

Replace
Code:
/$var/

with
Code:
var

, like:

Code:
awk -v var=${MY_VAR} '$2 ~ var' tmp_file

# 7  
Old 10-14-2009
It worked tongelja Smilie

Thanks everyone, cheers!

---------- Post updated at 05:14 PM ---------- Previous update was at 04:40 PM ----------

After checking my file I saw that sometimes I also have the string Col2 in the second column (which is different than col2)

Is there a way to use the previous AWK command (in a not case sensitive way)??

Thanks in advance

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