Wow, those were actually useful. Virtually every "linux tip" list I've ever seen is stuff like "press tab to complete a command!!!", but these are actually good tips
Regarding tip #4, resetting the root password: Usually one needs to type "sync" afterward to make the changes persist after a reboot.
Also of note is that on (some?) Debian-based systems, particularly Ubuntu, single user mode will still require you to enter the root user's password before you gain console access... In this case, your only hope is a LiveCD and chroot...
instead of 1 append init=/bin/sh to the kernel command line.
Tip for the author: instead of of typing while [ 1 ]; ..., type while :;
Well that screen tip is going to be really useful - I can feel my explaining things to remote colleagues getting easier already ...
If you're not already familiar with screen, it's definitely worth the time to learn it. Sharing terminals is the least of what it can do.
Really useful. Thank you. I echo the sentiment that most Linux tip sites offer only rudimentary tips aimed at beginners.