[ale] Generating sequential files with leading zeros from bash

[Greg Freemyer]

Thanks Charles, you saved me having to look up the '*' trick.  Been a
while since I used it even in c code.

On 4/6/07, Charles Shapiro <hooterpincher at gmail.com> wrote:
> Look up printf(1).
>  e.g.
>
>  "printf "%5.5d\n" 40
>  00040
>
>  Looks like "*" works too, at least in bash(1):
>
>  printf "%*.*d\n" 7 7 40
>  0000040
>
>  -- CHS
>
>
>
> On 4/6/07, Greg Freemyer <greg.freemyer at gmail.com> wrote:
> >
> > All,
> >
> > I need to do a rename on a bunch of sequential files from something like:
> >
> > output-000001.pgm
> > output-000002.pgm
> > output-000003.pgm
> > ...
> >
> > to a new name that has a different number of leading zeros and a
> > different starting number.
> >
> > I now how to manage the counter, but how can I create a filename with
> > leading zeros from a bash script and a counter variable.
> >
> > ie. in C code I would do sprintf(dest_filename, "prefix-%07d.pgm",
> counter)
> >
> > Is there something similar to sprintf in bash?
> >
> > And to make the issue even more difficult, I would like the "07"
> > portion of the above to itself be variable.  ie. Sometimes I will want
> > 7 digits, other times 8, etc.
> >
> > Thanks
> > Greg
> > --
> > Greg Freemyer
> > The Norcross Group
> > Forensics for the 21st Century
> > _______________________________________________
> > Ale mailing list
> > Ale at ale.org
> > http://www.ale.org/mailman/listinfo/ale
> >
>
>
> _______________________________________________
> Ale mailing list
> Ale at ale.org
> http://www.ale.org/mailman/listinfo/ale
>


-- 
Greg Freemyer
The Norcross Group
Forensics for the 21st Century