(20-01-2020, 01:41 AM)eduarch42 Wrote: How would one go to take the concept of unix piping into the GUI environment?

Here's something I often find myself doing:

$ find . -name "*.jpg" -newer timestamp | sxiv -io | iptckwed -i -a "b&w" ; touch timestamp

Here sxiv(1) is being used as an interactive filter to look at the new image files and pass the pathnames of the selected ones on to the next stage of the pipeline. Text in, text out, graphics in between.

Probably not what the OP was asking about, but I thought I should point out that some GUI programs already support piping scenarios like this.