uptime - Tell how long the system has been running.
gives a one line display of the following information. The current
time, how long the system has been running, how many users are currently
logged on, and the system load averages for the past 1, 5, and 15 minutes.
This is the same information contained in the header line displayed by
System load averages is the average number of processes that are either in a
runnable or uninterruptable state. A process in a runnable state is either
using the CPU or waiting to use the CPU. A process in uninterruptable state is
waiting for some I/O access, eg waiting for disk. The averages are taken over
the three time intervals. Load averages are not normalized for the number of
CPUs in a system, so a load average of 1 means a single CPU system is loaded
all the time while on a 4 CPU system it means it was idle 75% of the time.
- -h, --help
- display this help text
- -V, --version
- display version information and exit
- information about who is currently logged on
- process information
was written by
Michael K. Johnson
Please send bug reports to