hi:
s/(?<=^file_)([0-9]+)$/$1+1/e
^^^^^^^^^^ this is looking for the end string with digits.
but what (?<=^file_) means?
I know "^file_" means the string begins with "file_" but what ?= and (
) used for?
appreciate your help,
miloody
2008/7/6 Dr.Ruud <[EMAIL PROTECTED]>:
> loody schreef:
>
>> I try to update the end of my file index by 1 per day.
>> ex:
>> file_0 --> file_1
>> file_10 --> file_11
>
> I think you are looking for something like
>
> s/(?<=^file_)([0-9]+)$/$1+1/e
>
>
> Example:
>
> $ echo -e 'file_0\nfile_10' | perl -wpe'
> s/(?<=^file_)([0-9]+)$/$1+1/e
> '
> file_1
> file_11
>
> --
> Affijn, Ruud
>
> "Gewoon is een tijger."
>
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>
>
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