Source: https://unix.stackexchange.com/questions/6/what-are-your-favorite-command-line-features-or-tricks

• Ctrl+U – Cut the current line
• Ctrl+Y – Paste a line cut with Ctrl+U
• Ctrl+L – Clear the screen and redraw the current line
• Ctrl+G – Get a new line and abandon the current one
• Ctrl+A to go to the beginning of the line,
• Ctrl+E to go to the end of the line,
• Ctrl-K to erase from the cursor to the end of the line.
• CTRL+R for searching/activating previously executed commands (the contents of ~/.bash_history).
• ALT+ . to insert preceding line’s final parameter

Frequently used commands:

# execute last command as root
sudo !!
# move to previous dir 
cd -

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