Re: What do you use GNU Parallel for?

[Ole Tange]

On Wed, Jul 16, 2014 at 8:34 PM, Ole Tange <tange@gnu.org> wrote:
> I am always looking for neat examples to use GNU Parallel for.

For bioinfomatics you have a pair of files: foo_R1.txt.gz and
foo_R2.txt.gz, and you often want to process them together. Here a
program is called that takes the uncompressed foo_R1/R2 and produce
foo_interleave.txt.gz

parallel --xapply --dry-run 'python interleave.py <(zcat {1}) <(zcat
{2}) |gzip > {=1 s/_R1.txt.gz/_interleave.txt.gz/=}' ::: *R1.txt.gz
::: *R2.txt.gz

Note how you can replace the _R1.txt.gz from argument one using perl.

/Ole