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pradeepspa 01-30-2017 02:28 PM
Find and replace string ina file with specific condition
 
All,

I am trying to do this

1. Find line of a text file by grepping specific string
2. Once found, replace one of the string in that line with other.

Am using below script,

Quote:
#!/bin/bash

while read line
do
grep $line /tmp/export/raw-file.txt |sed 's/torspgw2/stjnspgw1/g;s/calspgw1/torspgw2/g'`

done </tmp/export/grep-file.txt
But looks like this script output the value as expected but not actually editing the file with new value. Is there anything i need to add further to make this work?

Turbocapitalist 01-30-2017 02:39 PM
grep is not necessary or useful there. Read up more on plain sed which can do conditionals like this:

Code:
#!/bin/bash
while read line
do
        sed "/$line/{s/torspgw2/stjnspgw1/g;s/calspgw1/torspgw2/g}" /tmp/export/raw-file.txt
done </tmp/export/grep-file.txt

grail 01-30-2017 02:59 PM
Sorry to say, but neither solution presented will change the original file (I think Turbocapitalist might have forgotten the file name ;) ).

Have a look at man sed for the -i option :)

pradeepspa 01-30-2017 03:05 PM
WOW!!! Awesome. Thanks guys.

Turbocapitalist 01-30-2017 03:09 PM
Quote:
Originally Posted by grail (Post 5662498)
(I think Turbocapitalist might have forgotten the file name ;) )
Thanks. Good catch.


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