#!/bin/bash

# Bash Keyboard Shortcuts

function usage() {

cat <<-EOF

Usage: $0 [option]

Options: # if no option is provided all shortcuts are displayed

-h, --help usage information

-m, --moving moving the cursor

-e, --editing editing

-H, --history history

-p, --process process control

EOF

exit 0;

}

read -d "" moving <<-EOF

__________________

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

EOF

read -d "" editing <<EOF

________

Editing:

________

Ctrl + L Clear the Screen, similar to the clear command

Ctrl + u Cut/delete the line before the cursor position.

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.

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

EOF

read -d "" hist <<EOF

________

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

!abc Run last command starting with abc

!abc:p Print last command starting with abc

!$ 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

EOF

read -d "" procctrl <<EOF

________________

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)

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).

EOF

function showall() {

cat <<-EOF

$moving

$editing

$hist

$procctrl

EOF

exit 0;

}

[ "$1" ] || showall

case $1 in

"-h" | "--help")

usage

;;

"-m" | "--moving")

echo "$moving"

;;

"-e" | "--editing")

echo "$editing"

;;

"-H" | "--history")

echo "$hist"

;;

"-p" | "--process")

echo "$procctrl"

;;

*)

usage

;;

esac