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Old 03-21-2008, 11:13 PM   #1
Registered: Feb 2004
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sed to change some values in a file permanently

I have a file where I there are some 1500 lines and in there I want to change some values. For that I am using sed like below:

PHP Code:
cat /home/test.css grep "network.type” | sed –i ‘s/0/1/’ 
Now the problem is it changes the lines in file but how to make it permanent and if I use sed with -i option then I have to provide the file name with it but I am using grep to grep the line.

Any clue please.

Last edited by tanveer; 03-21-2008 at 11:14 PM.
Old 03-21-2008, 11:22 PM   #2
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You don't need cat, nor grep - use sed's address facility (see the manpage). Something like this
sed -i /network.type/s/0/1' test.css
Old 03-23-2008, 02:17 PM   #3
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Thanks a lot. just what I was looking for.


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