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in reply to Re^2: opening file for editing
in thread opening file for editing

ok i got it, i just wanted to know any way i can open already existing file change it on the fly

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Re^4: opening file for editing
by armstd (Friar) on Oct 09, 2011 at 11:56 UTC

    No, that's not how editors work. Read from original, write to a new temp file. When the writing is complete and successful(!), rename the temp file to the old name. Typically you don't want to wipe out the original until you are sure you have a good replacement for it.

    --Dave

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