Ray Olszewski wrote:
>
> > > In my case I need the first 8 characters and the
> > > last 4 (.xxx)
> >
> >--------------------------------------------------
> >example="long-filename.to.munge.txt"
> >echo ${example%${example#????????}}.${example##*.}
> >--------------------------------------------------
>
> All the approaches suggested for this exercise assume that one
> need not worry about generating a UNIQUE 8.3 filename from the
> long filename. Is that assumption appropriate to Ben's real,
> underlying problem? Or does it risk overwriting a file with a
> later one
OK, Ray, here's one off the top of my head. I'm sure it
can be improved, but it will do for a start.
-------------------------------------------------------------
#!/bin/bash
from="/home/ichi" to="/tmp"
for i in `ls $from` ; do
front=${i%.*} ; back=""
echo $i | grep "\." >/dev/null ; [ $? = 0 ] && back=.${i##*.}
[ ${#front} -gt 8 ] && front=${front%${front#????????}}
[ ${#back} -gt 4 ] && back=${back%${back#????}}
front=`echo $front | tr " ." "__"`
new=$front$back
for j in `ls $to` ; do
case $j in $new)
echo "$new already exists. Input new name."
read new
esac
done
echo $new ### YOUR OUTPUT ROUTINE GOES HERE ###
done
--------------------------------------------------------------
I suppose somebody is going to tell that there is a built-in
command that does this automatically. Ah, well.
Cheers,
Steven
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