If you use *nix, no doubt you’ve spent some time on the command line. Here are a few of the most helpful tricks you can use in the bash shell to really optimize your time, impress your friends, and make everyone else feel inferior… not to mention become more productive. People familar with the command line can usually work considerably faster (for most tasks) than you can through a gui. So be brave, embrace the keyboard and master the bash shell.
Bash heavily uses two keys, Ctrl and Meta. You’ll easily find the Ctrl key on your keyboard, but the Meta, not so much (unless you’re on a Sun system).. It’s also different for Mac vs PC. Point is commonly called cursor.
All tips taken from the very large man file (man bash), with my additional commentary. Please reference that file for more information.