[lug] Odd Shell Script Queries

[Scott Kruger]

Here is an example bash script that I created for dealing with filenames
and extensions.  It should be straightforward to modify it and stick it
into a for loop to do what you want.

#!/bin/bash
file=root0009.eps
extension=${file##*.}
rootname=${file%.*}
rootnonum=${rootname%%[0-9]*}
number=${rootname#$rootnonum}
echo 'file name ' $file
echo 'extension'  $extension
echo 'root name ' $rootname
echo 'root w/o number ' $rootnonum
echo 'number '    $number

On Tue, Jan 18, 2005 at 03:42:02PM -0700, Chip Atkinson did write:
> 
> 
> On Tue, 18 Jan 2005, Matt Thompson wrote:
> 
> > Oh knowledgeable ones, I have a couple shell script queries.  First, the
> > one I believe there might be an answer to.
> > 
> > Is there an easy way to batch-convert filenames from using dots as
> > separators to underscores *while leaving the final dot*?  That is, I
> > know I can do:
> > 
> > > echo "ibr-.355.3graph.notitle.pdf"| tr '\.' '_'
> > ibr-_355_3graph_notitle_pdf
> 
> I'd pipe it through sed myself: 
> echo ibr-.355.3graph.notitle.pdf | sed -e 's/\./_/g' -e 's/_pdf$/.pdf/'
> 
> 
> > 
> > but now the final "." is an "_".  I'm sure I could use Perl or something
> > to chomp off the last bit, do the translation, and re-concatenate the
> > end back, but I thought I'd ask if someone here knew a nice way.  (If
> > you're wondering, LaTeX is b0rking on my habit of using dots in
> > filenames.)
> > 
> > 
> > My second script question is a bit more involved.  Namely, at my work we
> > have multiple printer queues.  Two are a LaserJet and Color LaserJet,
> > with the Color one being more expensive.  I began to wonder if there was
> > a script that parsed a PS or PDF file in such a way that only pages with
> > color are sent to a color printer, while the rest are sent to the mono.
> > I'm not enough of a PS/PDF guru to know if this is even possible, but
> > for a large, mainly-text file (say a thesis) with a few color diagrams,
> > it would be interesting to know if it exists.
> 
> If you can create the same document in color and black and white, you
> could diff the two and look for kewords.  Then you could use grep to
> search for them and if found print to color.
> 
> > 
> > Thanks for the help,
> > Matt
> > 
> > -- 
> > Learning just means you were wrong and they were right. - Aram
> >    Matt Thompson -- http://ucsub.colorado.edu/~thompsma/
> >    440 UCB, Boulder, CO  80309-0440
> >    JILA A510, 303-492-4662
> > 
> 
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