Re: Numerically sorted arguments (in shell)

On 20/06/2024 at 05:34, Janis Papanagnou wrote:

On 19.06.2024 17:06, Chris Elvidge wrote:

On 19/06/2024 at 14:11, Janis Papanagnou wrote:

[...]

>
I tried the approach I outlined above... (here just echo'ing the
created parts)...
>
>
N=${1:-1}
sed_a="[^0-9]*\([0-9]\+\)[^0-9]*"
sed_r="\1\t"
sort_a="-k1n"
for (( n=2; n<=N; n++ ))
do
      sed_a+="\([0-9]\+\)[^0-9]*"
      sed_r+="\${n}\t"
      sort_a+=" -k${n}n"
done
cut_a="-f$((N+1))-"
>
echo "# The following commands would be connected by pipes:"
echo "sed 's/${sed_a}/${sed_r}&/'"
echo "sort -t$'\t' ${sort_a}"
echo "cut ${cut_a}"
>

>
Your way is still restricted to filenames with a known number of sets of
digits, though (AFAICS). I.e. you pass N rather than finding it.

 Yes. Above is just a codified version of the method I described
(thus also the echo's). Whether it's provided as parameter N or
obtained, say, from one of the files is left unanswered. Myself
I'd prefer some solution where even file sets with mixed amounts
of numerical parts may be used; thus being able to handle lists
that are named like chapters, like  1, 1.1, 1.2, ..., 5.3.3
 Slowly and continuously approaching the goal... :-)
 Janis
 

[...]

 

Originally you said:
(Ideally I'd also like to handle names with two numbers "A35P56.txt"
and irregular string components (lowercase, say, "page310ch1.txt"),
but that's just a nice-to-have. - I might make use of 'sort'?)
Does 'sort -V' help?
Seems to work with both spaces and newlines.
--
Chris Elvidge, England
NO ONE CARES WHAT MY DEFINITION OF "IS" IS