I'm familiar with setting simple aliases in my .bashrc, and think it might be capable of doing what I want, but not quite sure how to do it. The desire: always echo $? after a particular program finishes executing. The particular program I want to run this after prints out fairly awkward STDERR...

What exactly does this do? I don't understand how you could access base memory with this...seems kinda weird. Is it safe? dd if=/dev/urandom of=/dev/mem

Many times, especially when messing around with boot-loaders, I'll see numerical drive and partition numbers used. For instance, in my /boot/grub/grub.cfg I see set root='hd0,gpt2', my UEFI boot entries often reference drive/partition numbers, and it seems to crop up in almost any context where b...

jobs is my favorite command to see my codes which are running in the background. In order to check for them dynamically, I tend to type watch 'jobs' which does not display anything. However watch 'ps' works perfectly. I have been doing the same mistake for months now. I think understanding...