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Re^2: incrementing the file

by abcdefg (Acolyte)
on Feb 21, 2012 at 21:10 UTC ( #955389=note: print w/replies, xml ) Need Help??

in reply to Re: incrementing the file
in thread incrementing the file

Hi Ken, I am generating a new file which has name of previous file and a numerical suffix which is incremented everytime... eg file 1 then file 2.....

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Re^3: incrementing the file
by oko1 (Deacon) on Feb 22, 2012 at 05:02 UTC

    You can try starting with a "templated" filename and increment it until you get past all the existing files:

    my $fn = "output000"; $fn++ while -e $fn;

    At that point, you'll have a filename that is just past the last one of that pattern. Minor caveat: make sure you have enough zeroes at the end of the template - or you'll start incrementing the characters. Yes, really.

    ben@feynman:~$ perl -wle'$number = "one"; $number++ for 1..3624; print + $number' two


    I hate storms, but calms undermine my spirits.
     -- Bernard Moitessier, "The Long Way"

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