Sometimes sophisticated job queue and cluster systems are overkill on office or individual PCs, especially for long lists of batch processing jobs that use comparatively few resources.
Use task-spooler to queue commands on Linux and control the number of simultaneous jobs for an easy way to parallelize a list of batch jobs! This tool is a great complement to some other command line workhorses like at and batch.
Task-spooler is not usually installed by default on Linux systems. It can be built by scratch after getting the source from https://vicerveza.homeunix.net/~viric/soft/ts/ or on Ubuntu (maybe other Debian based OS’s) you can use apt:
sudo apt-get install task-spooler
See the running, queued and completed or errors jobs just by calling tsp (on Ubuntu) or ts (if built from scratch). Add a command job to the queue by calling with arguments.
tsp bash myscript1.sh
tsp bash myscript2.sh
You can change the number of simultaneous jobs by calling tsp -S NJOBS, and there are some basic commands for prioritizing jobs (ts -u) and killing/removing jobs (tsp -r/tsp -k). By default each user has access to their own queue(s), so they are not shared system-wide. Just pile tasks into the queue, and rest assured that your hardware is being used to its full potential.