See also: Calendar and Time of Day - Calendar and Time of Day (conversions, manipulations, etc)

How can I implement a delay, or time a user's response, with sub-second resolution? []

Unix Programming FAQ How can I sleep for less than a second? []

Unix Programming FAQ How can I get a finer-grained version of alarm()? []

Low-Budget Network-Based Time Tracking Software? [2002/02/05]

When Unix Clocks Hit 10-Digits Will Anything Break? [2001/09/04]

I was told that Unix clocks would be fine for the year 2000, (and they were), but that Unix clocks will stop in 2038? Why is that? [ 2000/02/01]

How can I time events with finer resolution than the system clock's 55 ms (about 18 ticks a second)? []

Questions and Answers

sleep(1) - suspend execution for an interval of time {oss}

time(1) - time command execution {oss}

gkrellmoon-0.3 - A moon clock plugin for Gkrellm

py22-period-0.5 - A basic time period checking libary

vmware-guestd-3.0.0.1455 - VMware time synchronization daemon for FreeBSD guest OS

clockspeed-0.62_2 - Uses a hardware tick counter to compensate for deviant system clock

xtimer-0.8089 - A simple digital timer for X11

delta-times - Delta time routines for alarm(2) manipulation {oss}

settz - Time conversion / time zone system {oss}

Say The Time 5.0

Applications and Utilities

alarm (3) - set signal timer alarm {oss}

getitimer setitimer (2) - get/set value of interval timer {oss}

time (3) - get time of day {oss}

gettimeofday settimeofday (2) - get/set date and time {oss}

nanosleep (2) - suspend process execution for interval of nanoseconds {oss}

p5-Date-Handler-0.19 - Perl module for calculating time differences

wmtimer-2.4 - Multi-Function timer dockapp for WindowMaker

ruby-tzfile-0.1 - TZFile handling library for Ruby

rtc-2001.09.16.1 - Kernel module which provides /dev/rtc device support

libtai-0.60 - A library for storing and manipulating dates and times in second/attosecond

Dspclock.C - On-screen TSR clock {oss,msdos}

Ftime.H,Ftime.C - BC++-style file date/time struct functions {oss}

timer - Delta time routines for alarm(2) manipulation {oss}

Libraries and Functions

(The following links to subjects at this site retain your personalized selections.)

See also: Process Signals and Events - Sending and handling signals and events.

See also: Embedded and Portable Systems - (including microcontroller systems, handheld, laptop, palmtop)

Up to Hardware Access - Gateway topic to hardware and real-time related processing routines.