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Operating Systems Linux Red Hat How to sync time with bios in rhel7? Post 302956996 by kalpeer on Tuesday 6th of October 2015 01:43:12 AM
Old 10-06-2015
How to sync time with bios in rhel7?

Hi All,

I deployed the rhel7 server in the bare metal hardware. I want to configure the rhel7 server to sync time with bios. I tired the below commands. Still it did not sync the time with bios.

Quote:
demo>> cat /sys/devices/system/clocksource/clocksource0/current_clocksource
tsc
demo>>cat /sys/devices/system/clocksource/clocksource0/available_clocksource
tsc hpet acpi_pm
demo>>date
Tue Oct 6 10:51:10 IST 2015
demo>> hwclock --systohc --utc
demo>>ls -lrt /etc/local
locale.conf localtime
demo>>ls -lrt /etc/localtime
lrwxrwxrwx 1 root root 32 Sep 14 17:11 /etc/localtime -> /usr/share/zoneinfo/Asia/Kolkata
demo>>hwclock
Tue 06 Oct 2015 10:51:44 AM IST -0.672309 seconds
demo>>

Thanks,
Kalai
 

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sync(2) 							   System Calls 							   sync(2)

NAME
sync - update super block SYNOPSIS
#include <unistd.h> void sync(void); DESCRIPTION
The sync() function writes all information in memory that should be on disk, including modified super blocks, modified inodes, and delayed block I/O. Unlike fsync(3C), which completes the writing before it returns, sync() schedules but does not necessarily complete the writing before returning. USAGE
The sync() function should be used by applications that examine a file system, such as fsck(1M), and df(1M), and is mandatory before rebooting. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Standard | +-----------------------------+-----------------------------+ SEE ALSO
df(1M), fsck(1M), fsync(3C), attributes(5), standards(5) SunOS 5.10 5 Jul 1990 sync(2)
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