Crontab Format
|
Field
|
Description
|
Allowed Value
|
|
MIN
|
Minute Field
|
0-59
|
|
HOUR
|
Hour Field
|
0-23
|
|
DOM
|
Day of Month
|
1-31
|
|
MON
|
Month Field
|
1-12
|
|
DOW
|
Day of Week
|
0-6
|
|
CMD
|
Command
|
Any Command to Execute
|
Run Crontab every 30 mintues between 09:00am to 20:00 pm daily
*/30 09,10,11,12,13,14,15,16,17,18,19,20 * * * /app/script/abs.sh
or
*/30 09-20 * * * /app/script/abs.sh
Run Crontab every 30 mintues daily
*/30 * * * * /app/script/abs.sh
Run Crontab at specific time like 10th June 08:30 AM
30 08 10 06 * /app/script/abs.sh
30 – 30th Minute
08 – 08 AM
10 – 10th Day
06 – 6th Month (June)
* – Every day of the week
Run Crontab every day at 21:55
55 21 * * * /app/script/abs.sh
55 – 55th Minute
21 – 09 PM
* – Daily
* – Every Month
* – Every day of the week
