Awk/Sed One liner for text replacement

bishnu.bhatta · #1 (**permalink**) 03-26-2007

Hi group,

I want to replace the occurance of a particular text in a paragraph.I tried with Sed,but Sed only displays the result on the screen.How can i update the changes in the original file???

The solution should be a one liner using awk and sed.

Thanks in advance.

ghostdog74 · #2 (**permalink**) 03-26-2007

you can use ">>" or ">" to redirect the results to a new file, or if you version of sed supports -i, it will update the file for you.

bishnu.bhatta · #3 (**permalink**) 03-26-2007

I want the updates in the same file......what is the -i option in sed used for???

ghostdog74 · #4 (**permalink**) 03-26-2007

Quote:

Originally Posted by bishnu.bhatta

I want the updates in the same file......what is the -i option in sed used for???

from my sed man page

Quote:

...
-i[SUFFIX], --in-place[=SUFFIX]

edit files in place (makes backup if extension supplied)
....

bishnu.bhatta · #5 (**permalink**) 03-26-2007

thanks anbu23 and ghostdog74 for the solutions.....

we need to add a "g" in the solution provided by anbu23

Code:

perl -i -ne ' s/search_str/replacement_str/g; print ' file

anbu23 · #6 (**permalink**) 03-26-2007

If you have perl try this

Code:

perl -i -ne ' s/search_str/replacement_str/; print ' file

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