How do I clear/delete the current line in terminal?

You can use Ctrl+U to clear up to the beginning.

You can use Ctrl+W to delete just a word.

You can also use Ctrl+C to cancel.

If you want to keep the history, you can use Alt+Shift+# to make it a comment.

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_{Bash Emacs Editing Mode Cheat Sheet}

Just to summarise all the answers:

• Clean up the line: You can use Ctrl+U to clear up to the beginning.
• Clean up the line: Ctrl+E Ctrl+U to wipe the current line in the terminal
• Clean up the line: Ctrl+A Ctrl+K to wipe the current line in the terminal
• Cancel the current command/line: Ctrl+C.
• Recall the deleted command: Ctrl+Y (then Alt+Y)
• Go to beginning of the line: Ctrl+A
• Go to end of the line: Ctrl+E
• Remove the forward words for example, if you are middle of the command: Ctrl+K
• Remove characters on the left, until the beginning of the word: Ctrl+W
• To clear your entire command prompt: Ctrl + L
• Toggle between the start of line and current cursor position: Ctrl + XX

I have the complete shortcuts list:

1. Ctrl+a Move cursor to start of line
2. Ctrl+e Move cursor to end of line
3. Ctrl+b Move back one character
4. Alt+b Move back one word
5. Ctrl+f Move forward one character
6. Alt+f Move forward one word
7. Ctrl+d Delete current character
8. Ctrl+w Cut the last word
9. Ctrl+k Cut everything after the cursor
10. Alt+d Cut word after the cursor
11. Alt+w Cut word before the cursor
12. Ctrl+y Paste the last deleted command
13. Ctrl+_ Undo
14. Ctrl+u Cut everything before the cursor
15. Ctrl+xx Toggle between first and current position
16. Ctrl+l Clear the terminal
17. Ctrl+c Cancel the command
18. Ctrl+r Search command in history - type the search term
19. Ctrl+j End the search at current history entry
20. Ctrl+g Cancel the search and restore original line
21. Ctrl+n Next command from the History
22. Ctrl+p previous command from the History

Ctrl+A, Ctrl+K to wipe the current line in the terminal. You can then recall it with Ctrl+Y if you need.