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Terminal.md

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Terminal

Command Elements

$ command -opts arguments

A command is a small program that you run, which performs a specific task.

Options are optional parameters that get passed in to modify the operation and/or output of the program. Options can be passed in as one or more single characters (-l, -alGFz) and/or as words (--format=pretty). Options are specific to each program.

Arguments may be passed in to the program to specify values to perform the program on. ls (without arguments) lists the contents of the current directory; ls /usr/local lists the contents of the /usr/local directory.

Common Commands

  • man - Shows manual for argument
  • pwd - Prints current folder
  • ls - Lists files and folder
  • cd - Change directory
  • mkdir - Creates new folder
  • touch - Creates new (empty) file
  • cat - Prints contents of file
  • head - Print top lines of file
  • tail - Print bottom lines of file
  • rm - Delete (don't be dumb)
  • mv - Move
  • cp - Copy
  • grep - Search for contents
  • pbcopy - Copy onto clipboard
  • pbpaste - Pastes from clipboard

Shortcuts

  • ~ - Home directory
  • / - Root
  • .. - Up one level
  • | - "Pipe," passes result from left into right
  • > - Pipe, but left side is added to a file on right
  • < - Pipe, but right side is a file input to left