Here are some QNX Neutrino commands that you'll frequently use:
| If you want to: | Use: | 
|---|---|
| Determine your current directory | pwd (builtin ksh command) | 
| Change directory | cd (builtin ksh command) | 
| List the contents of a directory | ls | 
| Rename (move) files and directories | mv | 
| Delete (remove) files | rm | 
| Copy files and file hierarchies | cp or pax | 
| Create directories | mkdir | 
| Remove directories | rmdir | 
| Determine how much free space you have on a filesystem | df | 
| Concatenate and display files | cat | 
| Display output on a page-by-page basis | less or more | 
| Find files based on search criteria | find | 
| Change a file's permissions/attributes | chmod | 
| Create hard and symbolic links | ln | 
| Create a tape archive | tar or pax | 
| Extract files from a .tar file | tar | 
| Extract files from a .tar.gz or .tgz file | gunzip filename | pax -r or tar -xzf filename | 
For more information about these and other commands, see the Utilities Reference.