| Command | Description | 
|---|---|
| cat file | Display contents of file | 
| cd | Change to home directory | 
| cd dir | Change directory to dir | 
| cp file1 file2 | Copy file1 to file2 | 
| cp -r dir1 dir2 | Copy dir1 to dir2; create dir2 if it does not exist | 
| dir | Display contents of current directory | 
| less file | Display the contents of file | 
| ls options | Display contents of current directory | 
| mkdir dir | Create a directory dir | 
| more file | Display the contents of file | 
| mv file1 file2 | Rename file1 to file2 | 
| mv file dir | Move file to directory dir | 
| pwd | Display current directory | 
| rmdir dir | Remove a directory dir (only if empty) |