This article lists various practical Linux commands to be used only as a reference guide and by experienced Linux users. Not all Linux commands will be available on your system by default so consider install a relevant package before use. This Practical Guide to Linux Commands may list Linux commands you may already know but cannot remember usage syntax as well as it may introduce some new Linux commands to improve your Linux command line efficiency. Note, this guide will not teach you how to use Linux commands since it relies on your experience to alter Linux commands syntax below to fit your needs.