Run a Command Repeatedly and Display the Output
watch runs a command repeatedly, displaying its output. This allows you to watch the program output change over time. By default, the program is run every 2 seconds. watch is very similar to tail.
watch -d ls -l
- This will watch the current directory for any file changes and highlight the change when it occurs.
Navigate to the Last Directory You Were In
will take you to the last directory you were in.
Delete the Entire Line
If you’ve just typed a long string of commands that you don’t need to enter anymore, delete the entire line by using: CTRL+U,K. That is not easy. CTRL+U deletes whatever is to the left of the cursor and CTRL+K deletes what is to the right. If you are at the end of command, CTRL+U will do. Especially if you start typing password and you make a mistake. Alternatively, you can use CTRL+C, which discards the current typed command, and gives you a new line.
CTRL+L will clear the screen.