DATE(1) - General Commands Manual # DATE(1) - General Commands Manual
NAME # date - display or set date and time
SYNOPSIS # date [-aju] [-f pformat] [-r seconds] [-z output_zone] [+‌format] [[[[[[cc]yy]mm]dd]HH]MM[.SS]]
DESCRIPTION # When invoked without arguments, the date utility displays the current date and time. Otherwise, depending on the options specified, date will set the date and time or print it in a user-defined way.
Changing the system date has some risks, as described in settimeofday(2).
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ENDRUN(4) - Device Drivers Manual # ENDRUN(4) - Device Drivers Manual
NAME # endrun - EndRun Technologies native time-of-day message timedelta sensor
SYNOPSIS # pseudo-device endrun [count]
DESCRIPTION # This line discipline interfaces serial EndRun Technologies devices.
The line discipline is enabled by the following sequence:
#include <sys/ioctl.h> int ldisc = ENDRUNDISC, fildes; ... ioctl(fildes, TIOCSETD, &ldisc); The byte stream is unaltered by the line discipline which maintains a timedelta sensor using the EndRun data.
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GPIODCF(4) - Device Drivers Manual # GPIODCF(4) - Device Drivers Manual
NAME # gpiodcf - DCF77 timedelta sensor through GPIO pin
SYNOPSIS # gpiodcf* at gpio? offset 0 mask 0x1 gpiodcf* at gpio?
DESCRIPTION # The gpiodcf driver decodes the DCF77 time signal code using one GPIO pin. The pin is used as a data signal. The GPIO pin must be able to read an input.
The pin number can be specified in the kernel configuration with the offset locator.
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MBG(4) - Device Drivers Manual # MBG(4) - Device Drivers Manual
NAME # mbg - Meinberg Funkuhren timedelta sensor
SYNOPSIS # mbg* at pci?
DESCRIPTION # The mbg driver provides support for Meinberg Funkuhren radio clocks (time signal station and GPS receivers). mbg implements a timedelta sensor and the delta (in nanoseconds) between the received time information and the local time can be accessed through the sysctl(8) interface.
The card type is indicated in the sensor description.
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MSTS(4) - Device Drivers Manual # MSTS(4) - Device Drivers Manual
NAME # msts - Meinberg Standard Time String timedelta sensor
SYNOPSIS # pseudo-device msts [count]
DESCRIPTION # This line discipline interfaces serial Meinberg devices.
The line discipline is enabled by the following sequence:
#include <sys/ioctl.h> int ldisc = MSTSDISC, fildes; ... ioctl(fildes, TIOCSETD, &ldisc); The byte stream is unaltered by the line discipline which maintains a timedelta sensor using the MSTS data.
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NMEA(4) - Device Drivers Manual # NMEA(4) - Device Drivers Manual
NAME # nmea - NMEA 0183 timedelta sensor
SYNOPSIS # pseudo-device nmea [count]
DESCRIPTION # This line discipline interfaces NMEA devices, such as GPS receivers attached to a serial or USB port.
The line discipline is enabled by the following sequence:
#include <sys/ioctl.h> int ldisc = NMEADISC, fildes; ... ioctl(fildes, TIOCSETD, &ldisc); The byte stream is unaltered by the line discipline which maintains timedelta and position sensors using the NMEA data.
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NTPCTL(8) - System Manager’s Manual # NTPCTL(8) - System Manager’s Manual
NAME # ntpctl - control the NTP daemon
SYNOPSIS # ntpctl -s all | peers | Sensors | status
DESCRIPTION # The ntpctl program displays information about the running ntpd(8) daemon.
The options are as follows:
-s all | peers | Sensors | status
Used to display information about the running daemon. Keywords may be abbreviated.
all shows all data available.
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NTPD.CONF(5) - File Formats Manual # NTPD.CONF(5) - File Formats Manual
NAME # ntpd.conf - NTP daemon configuration file
DESCRIPTION # This manual page describes the format of the ntpd(8) configuration file.
ntpd.conf has the following format:
Empty lines and lines beginning with the ‘#’ character are ignored.
Keywords may be specified multiple times within the configuration file. The basic configuration options are as follows:
listen on address [rtable table-id]
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NTPD(8) - System Manager’s Manual # NTPD(8) - System Manager’s Manual
NAME # ntpd - Network Time Protocol (NTP) daemon
SYNOPSIS # ntpd [-dnv] [-f file]
DESCRIPTION # The ntpd daemon synchronizes the local clock to one or more remote NTP servers or local timedelta sensors. ntpd can also act as an NTP server itself, redistributing the local time. It implements the Simple Network Time Protocol version 4, as described in RFC 5905, and the Network Time Protocol version 3, as described in RFC 1305.
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RDATE(8) - System Manager’s Manual # RDATE(8) - System Manager’s Manual
NAME # rdate - set the system’s date from a remote host
SYNOPSIS # rdate [-46acnopsv] host
DESCRIPTION # rdate displays and sets the local date and time from the host name or address given as the argument. The time source may be an RFC 5905 protocol SNTP/NTP server or an RFC 868 TCP protocol server, which is usually implemented as a built-in service of inetd(8).
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