Linux Systems-Process management-Scheduled Tasksa Scheduled Task command1 at a time to perform a task2 Batch executes when the system load is not heavy3 Cron Periodic execution
two at command and use1 at [-f filename] Time2 at [-D Delete Task]3 at [-l View Task]4 Absolute Timekeeping method: hh:mm mm/dd/yy at 17:30 4/18/155 Interactive mode: at 9:00AM6 How to use the command file: Generate file At.script using the AT commandat-f at.srcipt 9:00am 4/18/15 or at < at.srcipt 9:00am 4/18/15 7 corresponding configuration file:/etc/at.allow or/etc/at.denyNone: Root has permission to set at, one of which is the config user in the file and root has permission to set the at
Three batch usage1 Lighter load means: Average load under 0.82 How to use the same as at, configuration files and other information can man manualFour crontab1 crontab files needed to generate the evergreen process2 Common commands: [-l display current crontab] [-R Delete Current crontab] [-e Edit current crontab file]3 format: mintue[0-59] hour[0-23] day[1-31] month[1-12] day-of-week[0-6] Commands (absolute path)time Uncertainty with * wildcard characters8 4 1-5/usr/bin/wall </ETC/MOTD0 * * 1-5/sbin/init 54 configuration files can be man
how the five processes are handled1 Standalone Standalone operation: resource-consuming system2 xinted Process hosting: run when necessary3 Atd,crontab Scheduled Tasks
six MY_QQ 872785786 and Linux system basis corresponding network disk data link: Http://pan.baidu.com/s/1ydewA Password: Kaek
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Linux systems-Process management-Scheduled Tasks
