Added og shell commands
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# SHELL SHORTCUTS
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### Moving the cursor
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```bash
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Ctrl + a Go to the beginning of the line (Home)
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Ctrl + e Go to the End of the line (End)
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Ctrl + p Previous command (Up arrow)
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Ctrl + n Next command (Down arrow)
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Alt + b Back (left) one word
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Alt + f Forward (right) one word
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Ctrl + f Forward one character
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Ctrl + b Backward one character
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Ctrl + xx Toggle between the start of line and current cursor position
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```
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### Editing
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```bash
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Ctrl + L Clear the Screen, similar to the clear command
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Alt + Del Delete the Word before the cursor.
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Alt + d Delete the Word after the cursor.
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Ctrl + d Delete character under the cursor
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Ctrl + h Delete character before the cursor (Backspace)
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Ctrl + w Cut the Word before the cursor to the clipboard.
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Ctrl + k Cut the Line after the cursor to the clipboard.
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Ctrl + u Cut/delete the Line before the cursor to the clipboard.
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Alt + t Swap current word with previous
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Ctrl + t Swap the last two characters before the cursor (typo).
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Esc + t Swap the last two words before the cursor.
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ctrl + y Paste the last thing to be cut (yank)
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Alt + u UPPER capitalize every character from the cursor to the end of the current word.
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Alt + l Lower the case of every character from the cursor to the end of the current word.
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Alt + c Capitalize the character under the cursor and move to the end of the word.
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Alt + r Cancel the changes and put back the line as it was in the history (revert).
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ctrl + _ Undo
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TAB Tab completion for file/directory names
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```
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### Special keys
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Text Terminals send characters (bytes), not key strokes.
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Special keys such as Tab, Backspace, Enter and Esc are encoded as control characters.
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Control characters are not printable, they display in the terminal as ^ and are intended to have an effect on applications.
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```bash
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Ctrl+I = Tab
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Ctrl+J = Newline
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Ctrl+M = Enter
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Ctrl+[ = Escape
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Many terminals will also send control characters for keys in the digit row:
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Ctrl+2 → ^@
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Ctrl+3 → ^[ Escape
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Ctrl+4 → ^\
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Ctrl+5 → ^]
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Ctrl+6 → ^^
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Ctrl+7 → ^_ Undo
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Ctrl+8 → ^? Backward-delete-char
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Ctrl+v tells the terminal to not interpret the following character, so Ctrl+v Ctrl-I will display a tab character,
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similarly Ctrl+v ENTER will display the escape sequence for the Enter key: ^M
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```
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### History
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```bash
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Ctrl + r Recall the last command including the specified character(s).
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searches the command history as you type.
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Equivalent to : vim ~/.bash_history.
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Ctrl + p Previous command in history (i.e. walk back through the command history).
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Ctrl + n Next command in history (i.e. walk forward through the command history).
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Ctrl + s Go back to the next most recent command.
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(beware to not execute it from a terminal because this will also launch its XOFF).
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Ctrl + o Execute the command found via Ctrl+r or Ctrl+s
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Ctrl + g Escape from history searching mode
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!! Repeat last command
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!n Repeat from the last command: args n e.g. !:2 for the second argumant.
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!n:m Repeat from the last command: args from n to m. e.g. !:2-3 for the second and third.
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!n:$ Repeat from the last command: args n to the last argument.
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!n:p Print last command starting with n
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!string Print the last command beginning with string.
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!:q Quote the last command with proper Bash escaping applied.
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Tip: enter a line of Bash starting with a # comment, then run !:q on the next line to escape it.
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!$ Last argument of previous command.
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ALT + . Last argument of previous command.
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!* All arguments of previous command.
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^abc^def Run previous command, replacing abc with def
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```
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### Process control
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```bash
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Ctrl + C Interrupt/Kill whatever you are running (SIGINT).
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Ctrl + l Clear the screen.
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Ctrl + s Stop output to the screen (for long running verbose commands).
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Then use PgUp/PgDn for navigation.
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Ctrl + q Allow output to the screen (if previously stopped using command above).
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Ctrl + D Send an EOF marker, unless disabled by an option, this will close the current shell (EXIT).
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Ctrl + Z Send the signal SIGTSTP to the current task, which suspends it.
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To return to it later enter fg 'process name' (foreground).
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```
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