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Full Discussion: Find and replace string based on entries on another file
Top Forums Shell Programming and Scripting Find and replace string based on entries on another file Post 302879894 by Akshay Hegde on Monday 16th of December 2013 11:05:31 AM
Old 12-16-2013
Quote:
Originally Posted by aydj
Sorry for my Omission TK:22 should also be replaced (every occurrence should be replaced).

output:
Code:
he will come to bar_frr and stay there. I will meet her in foo_err 
gree will see me there


Quote:
Originally Posted by aydj
I have a file1 with different with multiple fields and records
File2 has 2 fields.
I want to find and replace strings in file1 based on file2 values (I Want an exact match i.e. for example: when searching for DT:3, Substr of DT:34 should not be matched)

File2:
Code:
DT:3 foo_err
DT:34 bar_frr
DT:47 foo_bar
TK:22 gree

file1:
Code:
he will come to DT:34 and stay there. I will meet her in DT:3 
gree will see me there

Desired Output:

Code:
he will come to bar_frr and stay there. I will meet her in foo_err
TK:22 will see me there

You shown desired output this right ?

Try this then

Code:
$ awk 'FNR==NR{A[$1]=$2;next}{for(i in A)if($0~i)sub(i,A[i],$0)}1' file2 file1

he will come to bar_frr and stay there. I will meet her in foo_err 
gree will see me there

This User Gave Thanks to Akshay Hegde For This Post:
aydj
 

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