A, Schematic
Second, an overview
Task scheduling: it refers to the specific command or program execution system at a time
Task scheduling Category:
1, the system works: Some important work cycle of execution. Such as virus scanners, etc.
2, individual users work: Individual users may wish to perform procedures, such as database backup mysql.
Third, the basic grammar
crontab [options]
Common options
Fourth, Quick Start
1, task requirements
Setting task schedule file: / etc / crontab
Set personal task scheduling: crontab -e command execution
Then enter the task to the schedule file
Such as: * / 1 * * * * ls -l / etc / >> /tep/to.txt
This means that every hour every minute of the ls -l / etc / >> /tep/to.txt command
2, the following steps
1） crontab -e
2） */1 * * * * ls -l /etc >> /tep/to.txt
3) When the execution after save and exit.
4) every minute of the call will be automatically ls -l / etc >> /tep/to.txt
3, detailed description Parameter
