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If I am on linux , I use the " grep -v " command to list all the lines that do not contain the pattern and then I direct the output that I am getting to the same file to overwrite it.
something like ,
How can I do this on a windows system?Code:
grep -v "$pat" $file > $file
PS: sorry , I should have posted this in the windows board
I'd be surprised if that even works on unix, given that the shell is going to open the output file before grep gets a chance to read it.
As for grep on windows, then I'd suggest
http://unxutils.sourceforge.net/
or
http://www.cygwin.com/
>I'd be surprised if that even works on unix
I have used it a couple of times and it has worked. I think i was on bash shell on both the times. will check up anyway. and thanks for those two links