Search results
Results from the WOW.Com Content Network
The cron in Version 7 Unix was a system service (later called a daemon) invoked from /etc/rc when the operating system entered multi-user mode. [10] Its algorithm was straightforward: Read /usr/lib/crontab [11] Determine if any commands must run at the current date and time, and if so, run them as the superuser, root. Sleep for one minute
Quartz is a job scheduling library that can be integrated into a wide variety of Java applications. [ 1 ] Quartz is generally used for enterprise class applications to support process workflow, system management (maintenance) actions and to provide timely services within the applications.
This is a list of notable job scheduler software.Job scheduling applications are designed to carry out repetitive tasks as defined in a schedule based upon calendar and event conditions.
anacron is a computer program that performs periodic command scheduling, which is traditionally done by cron, but without assuming that the system is running continuously.. Thus, it can be used to control the execution of daily, weekly, and monthly jobs (or anything with a period of n days) on systems that don't run 24 hours a
A crystal oscillator is an electronic oscillator circuit that uses a piezoelectric crystal as a frequency-selective element. [1] [2] [3] The oscillator frequency is often used to keep track of time, as in quartz wristwatches, to provide a stable clock signal for digital integrated circuits, and to stabilize frequencies for radio transmitters and receivers.
webcron is the term for a time-based job scheduler hosted on a web server.The name derives its roots from the phrase web server and the Unix daemon cron.A webcron solution [buzzword] enables users to schedule jobs to run within the web server environment on a web host that does not offer a shell account or other means of scheduling jobs.
Crystal oscillators can be manufactured for oscillation over a wide range of frequencies, from a few kilohertz up to several hundred megahertz.Many applications call for a crystal oscillator frequency conveniently related to some other desired frequency, so hundreds of standard crystal frequencies are made in large quantities and stocked by electronics distributors.
Quartz clocks and quartz watches are timepieces that use an electronic oscillator regulated by a quartz crystal to keep time. This crystal oscillator creates a signal with very precise frequency , so that quartz clocks and watches are at least an order of magnitude more accurate than mechanical clocks .