Is there any way to use multi-threading for the Compress command in Caja?
I don’t believe there is an option, not unless you change the source code, or leave it as an issue (“feature request”) upstream.
I presume you’re looking for compression using multiple cores simultaneously. It’s possible to create a script with the command and place it in ~/.config/caja/scripts/ for it to appear in the “Scripts” menu – as an alternate to using Caja’s “Compress” option.
That is, providing there is a parameter for multiple cores?