Command: uptime (uptimec)

  UPTIME is a 16 bit DOS utility that display system uptime by automati-
  cally detecting when it was firstly booted. It replicates *NIX uptime,
  one of the basic UNIX commands which allows you to quickly confirm how
  long your system has been up and running since it was last rebooted or
  powered on.

Syntax:

  UPTIME [-h|-r]

Options:

  uptime  Displays the current system uptime.
  -h      Shows the help screen.
  -r      Forces resetting the counter. Useful if it is not automatically
          detected properly during startup.

Comments:

  UPTIME uses CMOS data area to retrieve current system date/time using
  the RTC (Real Time Clock). Since CMOS area is persistent, it uses CMOS
  alarm registers, to store when the system was first startedup. Almost
  no DOS programs use alarm capabilities, but if so, running UPTIME, will
  overwrite them.
  There are different approaches to UPTIME in DOS, such as UPTIME 7.02
  by Mark Aitchison. His approach is to get system boottime, by reading
  NUL: file timestamp. Unfortunately, this approach is not working in
  DOSBox and other emulators.
  UPTIME(c) has been specially optimized to run on pure DOS enviroments,
  no matter if they are on the top of physical or virtual machines. It is
  written using JWASM 2.12 beta, with x86 assembly using DOS tiny memory
  model in order to keep it compact.
  uptime0 = 8088/8086 or later
  uptime1 = 80186 or later
  uptime3 = 80368 or later

Examples:

  See above:
  uptime
  shows (for example):
    13:05:44 up 0 hour, 0 minute, 29 second, 1 user, load average:
    0.00, 0.00, 0.00
 a new uptime shows (for example):
    13:08:04 up 0 hour, 2 minute, 49 second, 1 user, load average:
    0.00, 0.00, 0.00
  uptime -h   Shows the help
  uptime -r
  shows
    Uptime counter reseted to zero
  a new uptime then shows:
    13:10:01 up 0 hour, 0 minute, 43 second, 1 user, load average:
    0.00, 0.00, 0.00

Command: uptime (uptimec)

Syntax:

Options:

Comments:

Examples:

See also: