UNIX Commands Cheat Sheet

UNIX Commands Cheat Sheet September 2, 2009 List: ls List all the files in the current directory ∼$ ls Present Directory: pwd Shows the current working directory (also called the current directory) ∼$ pwd Change Directory: cd Change the current directory ∼$ cd /users/priyanka/prog (Changes the working directory) ∼$ cd .. (Goes back one level up) ∼$ cd ∼ (Goes to your home directory) Remove: rm Removes (deletes) the specified file ∼$ rm prog1.c (Removes the file prog1.c from the current directory) Remove directory: rm -r Delete a directory and all the files inside it ∼$ rm -r /users/priyanka/old/ (Delete all the files under the ’old’ directory) Make directory: mkdir Create a new directory ∼$ mkdir newProgs (Creates a directory called ’newProgs’ in the 1 current directory) Copy: cp Copy the given file to another location ∼$ cp prog2.c /users/priyanka/new (Copies the file ’prog2.c’ from the current directory to the ’new’ directory ) Move: mv Move the given file to a new location ∼$ mv prog2.c /users/priyanka/new (Moves the file ’prog2.c’ from the current directory to the ’new’ directory ) Clear Screen: clear Clears the screen of old commands ∼$ clear Alternatively ’Ctrl + L’ also clears the screen :-) VIM Editor: vim Opens the VIM Editor to edit the given file ∼$ vim prog3.c (Opens the VIM editor to edit the ’prog3.c’ file in the current directory) C Compiler: gcc -o

Compiles the input file with GCC Compiler and creates the executable output file ∼$ gcc prog1.c -o prog1 (Compiles ’prog1.c’ and creates output file ’prog1.out’) Show file: more Displays the contents of the given file ∼$ more prog1.c (Displays the contents of ’prog1.c’) 2