hwclock.8 (741B)
- .Dd February 2, 2015
- .Dt HWCLOCK 8
- .Os ubase
- .Sh NAME
- .Nm hwclock
- .Nd query or set the hardware clock
- .Sh SYNOPSIS
- .Nm
- .Op Fl r | Fl s | Fl w
- .Op Fl u
- .Op Ar dev
- .Sh DESCRIPTION
- .Nm
- is a tool for accessing the hardware clock. You can display the current time,
- set the hardware clock from the System Time, or set the System Time from the
- hardware clock. It currently only works with UTC. You can use
- .Ar dev
- to specify the RTC device node absolute path. By default
- it will use
- .Pa /dev/rtc .
- .Sh OPTIONS
- .Bl -tag -width Ds
- .It Fl r
- Read the hardware clock and print the time on stdout.
- .It Fl s
- Set the system time from the hardware clock.
- .It Fl u
- Use UTC. This is the default option.
- .It Fl w
- Set the hardware clock to the system time.
- .El