Shortcuts to move the cursor on a terminal command line

Ctrl + a : Moves the cursor to the line start.
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Ctrl + e : Moves the cursor to the line end (remember e for end).

Alt + f : Moves the cursor forward one word (remember f for forward) .

Alt + b : Moves the cursor backward one word (remember b for backward) .

Ctrl + x + x: Moves the cursor to the line start and to the end again.

More details:
https://en.wikipedia.org/wiki/GNU_Readline