Introduction: For debugging and maintenance purposes, finding out how long a system has been online can prove useful. Using the command line interface (CLI), determining the system’s uptime or the time it has been powered on, can be done by a simple command. Requirements: A command line interface/shell on Windows or Linux. Procedure: Windows Once at the command line interface, type the following: net stats srv In the output, you will see something analogous to: Statistics since month/day/year hh:mm:ss AM/PM This is how long the system has been online. Linux Once at the command line interface, type the following: uptime You should see something analogous to the following: hh:mm:ss up x days, hh:mm, x users, load average: x, x, x This gives you the current time, then how many days, hours, and minutes the system has been powered on. More Information: On Linux, you can type: man uptime