Linux set up Scheduled tasks

One, first login

Two, find the folder

Third, view scheduled tasks

Crontab-l

IV, VI root Edit timed task edit complete, click ESC, then : Wq

Time format

minute hour date Month week command

Digital range 0-59 0-23 1-31 1-12 0-7 echo "Hello" >> abc.log

Meaning of special characters

* (asterisk) on behalf of any time accepted.

, (comma) represents the meaning of the separation period.

-(minus sign) represents a period of time in the range.

/n (slash) that n represents a number, spaced every n units.

EG1: Executed once every May 1 10:5

5 1 5 * command (If execution URL (curl "http://url"), or other direct write path)

EG2: Three points per day, six points for each execution

XX 3,6 * * * command

EG3: Every 8:20, 9:20,10:20,11:20 executes once.

8-11 * * * command

EG4: executed every five minutes

*/5 * * * command

EG5: Executed at 10 points per week

Ten * * 1 command

V: Restart

#service Crond Restart

Linux set up Scheduled tasks