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Top Forums UNIX for Dummies Questions & Answers Timekeeping in Linux question ... Post 302512830 by newlinuxuser1 on Monday 11th of April 2011 05:01:07 PM
Old 04-11-2011
Ok, again, please correct me if I'm wrong. So I set up "linux time" with "date" command and I do not use this "-s" option. Now I have two times, one is in BIOS hardware clock, another is a system time. Now, if I turn off my Linux machine for let say, prolonged perioud of time... and then I boot it... What time it will boot with? (assuming I don't use NTP) Will it be my formally incorrect BIOS time? Or there's some mechanism that can tell to a kernel how much time passed since last downtime, and it will boot with a correct time? Or it is different per /system/bios/kernel implementation?
 

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CLOCK(1)						      General Commands Manual							  CLOCK(1)

NAME
clock - display the time in an icon or window SYNOPSIS
clock AVAILABILITY
This command is available with the OpenWindows environment. For information about installing OpenWindows, refer to the OpenWindows Instal- lation and Start-Up Guide. DESCRIPTION
clock is an OpenWindows XView utility that displays the current time in a window or icon. When the window is open, clock can display the time in either analog or digital format. The clock window is scalable in either format. USAGE
When the clock window is open, it has a floating menu from which you can bring up a property window. From this property sheet, you can modify the display of the tool by selecting either the Analog or Digital choice box. Seconds: On the analog version, this selection starts a second hand on the face of the clock. On the digital version, it adds two dig- its to the digital readout. Date: Turns on a date display for both analog and digital versions of clock. BUGS
If you reset the system time, clock will not reflect the new time until you change its window state from open to icon, or vice versa. To reset the system time, see date (1V). The date display does not go well with the round clock face. Occasionally, when clock is uncovered, the face will be visually corrupted. Use the Refresh button from the frame menu to repair. 11 June 1990 CLOCK(1)
All times are GMT -4. The time now is 11:31 PM.
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