Newsgroups: comp.os.msdos.programmer,comp.os.msdos.djgpp
Subject: Re: Uptime and entropy in DOS
From: bmarcum AT iglou DOT com
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Date: 11 Feb 2000 18:17:06 -0500
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To: djgpp AT delorie DOT com
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On 2000-02-10 REPLYTOd_yerrick AT hotmail DOT comNO2CANNEDHAM said:
   >programmer:107203 comp.os.msdos.djgpp:77801 Is it possible to get
   >the uptime of a DOS system?  I need more entropy than the 32 bits I
   >get from time(NULL) to initialize a pseudorandom number generator.
   >Is there a predictable way to get at least 64 bits of entropy?
I have an uptime command on my system, I think it was part of FreeDOS.
If you run it in DR-DOS it also shows the number of tasks.

 UPTIME v7.02aá       Report the amount of time the computer has been running 

         Free & Open DOS Utility by M DOT Aitchison AT phys DOT canterbury DOT ac DOT nz

USAGE: UPTIME  [options]
OPTiONS:
 /B      Brief                          /D      Day of start only             
 /L[:fn] List to printer (or filename)  /S      System uptime (if under dosemu)
 /T      Time of start only             /U:x    Units:[Days|Hours|Min|S|Ticks]
ENViRONMENT VARiABLES:
 UPTIME  Specify default options, e.g. SET UPTIME=/Verbosity=16
 CLASS1=Error, CLASS2=Warn, _ANSI=NO, COMPATIBILITY=OpenDOS, LFN=NO

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