custom cron jobs

Understand cron concepts The cron daemon is a small subsystem composed of utilities and configuration files. cron of a certain style can be found in almost all UNIX-like systems. CronComponents include the daemon itself, a set of system-wide

  Most of the content below is translated according to Cron Help Guide, and some parts are added by yourself. The full text is as follows: Cron comes from the Greek word chronos (meaning "time"). It is the next program in linux to automatically

From: http://blog.chinaunix.net/u3/111961/showart_2359262.html   Cron is a Linux scheduled execution tool that can run jobs without human intervention. 1. About crontab In ubuntu server 9.10, cron is installed and started by default. The/etc/crontab

Introduction Cron is a Linux timed execution tool that can run jobs without human intervention.Under Ubuntu Server, Cron is installed and started by default, and if it is not started, it is set and started (chkconfig\sysv-rc-conf).The following can

IntroducedCron is a Linux timed execution tool that can run jobs without human intervention.Under Ubuntu Server, Cron is installed and started by default, and if it is not started, it is set and started (chkconfig\sysv-rc-conf).The following can be

Introduction to the Linux scheduled scheduling system cron Cron is a scheduled execution tool in Linux. It can run jobs without human intervention. This document does not introduce the implementation principle of cron. It mainly describes the

A network application must respond quickly to network requests, typically less than 1s, preferably dozens of microseconds, to provide a smooth experience for users sitting in front of the browser. This will not give the application too much time to

One-time mission plan: At,batchRecurring Task Scheduler: CronAt: Simple usageAt timeAt>Submit Task: ^c+dJob Result: Send the current user on the system as a messageSend and receive mail:Service start or Not Status View command:NETSTAT-TNL |grep ": 25

View the/etc/crontab fileShell =/bin/bashPath =/sbin:/bin:/usr/sbin:/usr/binMailto = rootHome =/# Run-Parts01 *** root run-parts/etc/cron. Hourly02 4 *** root run-parts/etc/cron. daily22 4 ** 0 root run-parts/etc/cron. Weekly42 4 1 ** root run-parts/

① Automatic start:First, write the test script. in/usr, trans. ShGedit/etc/init. d/rc. LocalAdd the script address to the end. ② Run the script regularly:The following parts are transferred from: http://hi.baidu.com/michaelxdt/item/a8e4fec22a59867388