Design of a scheduled task using crontab in CentOS
The at command is for a task that only runs once and runs cyclically scheduled tasks. In linux, cron (crond) is the system service. The Linux system has a lot of planned work, so this system service
The Linux system's scheduled tasks are controlled by cron (Crond), the system service. Linux systems have a lot of planned work on them, so this system service is started by default. In addition, because the user can set up scheduled tasks
Detailed explanation of the Crontab command for scheduled tasks
Preface
Crontab is Unix and Linux commands used to set periodic execution. It is a very common technology on the Internet. Many tasks are set to run cyclically in crontab. If crontab is
CronTab task scheduleFormat:* *** Command points (0-59), hour (0-23), Day (1-31), month (1-12), Week (0-6)Note:1. asterisks can match all characters. 2. An integer. Must be precisely matched. 3. two integers separated by short dashes. They match the
CronTab task scheduleFormat:
* *** Command points (0-59), hour (0-23), Day (1-31), month (1-12), Week (0-6)
Note:
1. asterisks can match all characters. 2. An integer. Must be precisely matched. 3. two integers
Excerpt from: http://www.centoscn.com/CentOS/help/2014/1030/4025.htmlObjectiveCrontab is UNIX and Linux used to set the periodic execution of instructions, is the Internet is very common technology, a lot of tasks will be set in the crontab loop
Crontab is UNIX and Linux used to set the periodic execution of instructions, is the Internet is very common technology, a lot of tasks will be set in the crontab loop execution, if not use crontab, then the task is a resident program, which is
Linux task management tool-Crontab
Crontab is a tool used to execute routine tasks cyclically on the Linux platform. in Linux, cron (crond) is a system service used to control tasks, in Linux, many scheduled tasks need to be started. Therefore, this
Description
Operating system: CentOS 6.x
IP Address: 192.168.21.188
Implementation Purpose: Synchronize the contents of the CentOS mirrored site to this server, and by configuring the HTTP server, can provide Yum
Server System: 64Bit CentOS 5.5
Although the introduction of Crontab is everywhere, read the term in detail, the harvest is still available. Crontab This name comes from "Chronos", an ancient Greek, "time" meaning (the following usage in the
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