commandlinefu.com is the place to record those command-line gems that you return to again and again.
You can sign-in using OpenID credentials, or register a traditional username and password.
Subscribe to the feed for:
Use modprobe to list all the dependencies of a certain kernel module. Handy when debugging system issues.
Useful to determine the source_ip of outgoing packages to a certain destination
Open another file for edition on a vertical split screen inside your vim session.
Use CTRL+W+W to switch between screens.
Open a CLI file explorer by splitting up your screen inside your vim session.
Besides, you probably are never going to forget this one.