Thread: deleting a line from a text file

  1. #1
    Eager young mind
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    deleting a line from a text file

    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 ,
    Code:
      grep  -v "$pat" $file > $file
    How can I do this on a windows system?

    PS: sorry , I should have posted this in the windows board
    In the middle of difficulty, lies opportunity

  2. #2
    and the hat of int overfl Salem's Avatar
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    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/
    If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
    If at first you don't succeed, try writing your phone number on the exam paper.

  3. #3
    Eager young mind
    Join Date
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    >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
    In the middle of difficulty, lies opportunity

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