bash

How-to: Bash Keyboard Shortcuts

Moving the cursor:

Ctrl + a Go to the beginning of the line (Home)
Ctrl + e Go to the End of the line (End)
Ctrl + p Previous command (Up arrow)
Ctrl + n Next command (Down arrow)
Alt + b Back (left) one word
Alt + f Forward (right) one word
Ctrl + f Forward one character
Ctrl + b Backward one character
Ctrl + xx Toggle between the start of line and current cursor position

Editing:

Ctrl + L Clear the Screen, similar to the clear command
Alt + Del Delete the Word before the cursor.
Alt + d Delete the Word after the cursor.
Ctrl + d Delete character under the cursor
Ctrl + h Delete character before the cursor (Backspace)
Ctrl + w Cut the Word before the cursor to the clipboard.
Ctrl + k Cut the Line after the cursor to the clipboard.
Ctrl + u Cut/delete the Line before the cursor to the clipboard.
Alt + t Swap current word with previous
Ctrl + t Swap the last two characters before the cursor (typo).
Esc + t Swap the last two words before the cursor.
ctrl + y Paste the last thing to be cut (yank)
Alt + u UPPER capitalize every character from the cursor to the end of the current word.
Alt + l Lower the case of every character from the cursor to the end of the current word.
Alt + c Capitalize the character under the cursor and move to the end of the word.
Alt + r Cancel the changes and put back the line as it was in the history (revert).
ctrl + _ Undo
TAB Tab completion for file/directory names
For example, to move to a directory 'sample1'; Type cd sam ; then press TAB and ENTER. type just enough characters to uniquely identify the directory you wish to open.

Special keys: Tab, Backspace, Enter, Esc

Text Terminals send characters (bytes), not key strokes. Special keys such as Tab, Backspace, Enter and Esc are encoded as control characters. Control characters are not printable, they display in the terminal as ^ and are intended to have an effect on applications. Ctrl+I = Tab Ctrl+J = Newline Ctrl+M = Enter Ctrl+[ = Escape
Many terminals will also send control characters for keys in the digit row: Ctrl+2 → ^@ Ctrl+3 → ^[ Escape Ctrl+4 → ^\ Ctrl+5 → ^] Ctrl+6 → ^^ Ctrl+7 → ^_ Undo Ctrl+8 → ^? Backward-delete-char
Ctrl+v tells the terminal to not interpret the following character, so Ctrl+v Ctrl-I will display a tab character, similarly Ctrl+v ENTER will display the escape sequence for the Enter key: ^M

History:

Ctrl + r Recall the last command including the specified character(s).
searches the command history as you type.
Equivalent to : vim ~/.bash_history.
Ctrl + p Previous command in history (i.e. walk back through the command history).
Ctrl + n Next command in history (i.e. walk forward through the command history).
Ctrl + s Go back to the next most recent command.
(beware to not execute it from a terminal because this will also launch its XOFF).
Ctrl + o Execute the command found via Ctrl+r or Ctrl+s
Ctrl + g Escape from history searching mode
!! Repeat last command
!n Repeat from the last command: args n e.g. !:2 for the second argumant.
!n:m Repeat from the last command: args from n to m. e.g. !:2-3 for the second and third.
!n:$ Repeat from the last command: args n to the last argument.
!n:p Print last command starting with n
!string Print the last command beginning with string.
!:q Quote the last command with proper Bash escaping applied.
Tip: enter a line of Bash starting with a # comment, then run !:q on the next line to escape it.
!$ Last argument of previous command.
ALT + . Last argument of previous command.
!* All arguments of previous command.
^abc­^­def Run previous command, replacing abc with def

Process control:

Ctrl + C Interrupt/Kill whatever you are running (SIGINT).
Ctrl + l Clear the screen.
Ctrl + s Stop output to the screen (for long running verbose commands).
Then use PgUp/PgDn for navigation.
Ctrl + q Allow output to the screen (if previously stopped using command above).
Ctrl + D Send an EOF marker, unless disabled by an option, this will close the current shell (EXIT).
Ctrl + Z Send the signal SIGTSTP to the current task, which suspends it.
To return to it later enter fg 'process name' (foreground).
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How-to: Bash Keyboard Shortcuts
Moving the cursor:
Editing:
Special keys: Tab, Backspace, Enter, Esc
History:
Process control: