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Modifying contents of file with sed

Comment:

Hey again. Just wanted to thank the forum for being so helpful last time I was here. :) Helped save me from a lot of headaches, hehe. I have a file that has a line somewhere in it that reads: int SEED = 12345; How would I use sed to find that instance in the file, and change the file that once, so something like ./CHANGE_SEED 21 would change that line in the file to int SEED = 21; and ./CHANGE_SEED 12345 would change it back. Thanks in advance for all the help. :) --Natnit

Name: lchi2000g
Date: April 19, 2006 at 17:44:44 Pacific

Reply:

Your file name with: int SEED = ...; is input.txt In CHANGE_SEED file: #!/bin/ksh sed "s/int SEED = [0-9]*;/int SEED = $1;/" input.txt Run it: $ ./CHANGE_SEED 12345 Luke Chi

0

Numerical sort with sort

std error line count

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