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grep within while read loop

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# 1  
Old 10-24-2009
grep within while read loop
I have a key file
$ cat klist
5 N:8855 CASA VERDE ROAD :32827 :ORLAND
5 N:585 MOLLY LANE :30189 :WOODST
5 N:320 NINA ROAD :32304 :TALLAH

and a data file, see example of the line below:

N:RT 15 & N 7TH STREET :17837 :U SAVE

I need to search by key (2nd field) from klist within mlist.
My code:

Code:
 
#!/bin/ksh
cut -d':' -f2 klist|while read addr; do 
        grep "'""$addr""'" mlist; 
done
exit 0

When I run the script nothing comes out. I used set -x in the script, see output below:

Code:
 
+ cut -d: -f2 klist
+ read addr
+ grep '8855 CASA VERDE ROAD' mlist
+ read addr
+ grep '585 MOLLY LANE' mlist
+ read addr
+ grep '320 NINA ROAD' mlist
+ read addr
+ exit 0

But when I manually run one of the grep the result is found:

Code:
 
$ grep '320 NINA ROAD' mlist
N:320 NINA ROAD                   :99999 :BARROW
N:320 NINA ROAD                   :32304 :TALLAH          
A:320 NINA ROAD                   :32304 :TALLAH

I suspect the input/output streams being messed up whithin the while read loop, but have no clear understanding of the problem. Can someone clarify the situation, please?
# 2  
Old 10-24-2009
why are you placing single quotes???
Code:
grep "$addr" mlist;

this is enough... because i don't see any single quotes in your search string..
# 3  
Old 10-24-2009
That is irrelevant to my question.

I placed single quotes around search string as a meaure against spaces and such within the key value.

Any pointers regarding my question would be appreciated.
# 4  
Old 10-24-2009
Code:
$> addr="320 NINA ROAD"
$> grep "'""$addr""'" mlist
$> grep "$addr" mlist
N:320 NINA ROAD                   :99999 :BARROW
N:320 NINA ROAD                   :32304 :TALLAH
A:320 NINA ROAD                   :32304 :TALLAH

# 5  
Old 10-24-2009
Hi.

Not sure what the wierd combination of double and single quotes around your grep are meant to achieve, but from the data you post, there's nothing in your data file that matches any key in your klist file.

I modified your klist file to add something that did match, and it worked fine (changing your wierd grep to just grep "$addr" mlist)
# 6  
Old 10-24-2009
You do not need cut BTW:
Code:
#!/bin/ksh
while IFS=: read x addr x; do
  grep "${addr%% }" mlist;
done<klist

# 7  
Old 10-25-2009
Hammer & Screwdriver
Quote:
Originally Posted by migurus
That is irrelevant to my question.

I placed single quotes around search string as a meaure against spaces and such within the key value.

Any pointers regarding my question would be appreciated.
I think you should understand the problem first..
if you don't know and some one suggest you something be patient and analyze...
all my friends suggested the same what i suggested.. so take time and analyze...
then get back... Smilie
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