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https://crontab.tech/every-4-hours
Cronjob let's you run a script to do a repetitive job in an efficent way, here's how you can schedule a cronjob for every 4 hours: Step 1: Edit your cronjob file by running "crontab -e" command. Step 2) Add the following line for every 4 hours interval: 0 */4 * * * /path/to/your/script. Step 3: Save the file.
https://askubuntu.com/questions/857938/how-to-automatically-reboot-my-server-every-4-hours
Type sudo crontab -e and the press ENTER. Use the down arrow key to go to the bottom of the text. Type 0 */4 * * * sudo reboot. Press CTRL + X. Press Y. Press ENTER. If all went well, it should reboot every 4 hours, on the hour. Share. Improve this answer.
https://rentalsz.com/ubuntu-cron-reboot/
Ubuntu cron job reboot every 4 hours DigitalOcean. Rentals Details: sudo crontab-e.There you can set your server to reboot every 4 hours with the following: # For more information see the manual pages of crontab (5) and cron (8) # # m h dom mon dow command 0 */4 * * * root /sbin/shutdown-r now.However, you should not have a need to reboot your server every 4 hours.
https://serverfault.com/questions/39004/what-is-the-correct-syntax-to-run-cron-every-4-hours
This will run the job every 4 hours, on the hours of 00:00, 04:00, 08:00 12:00, 16:00, 20:00. This is just a little more verbose way of writing */4, but it should work the same. Share
https://crontab.guru/every-4-hours
sunday (non-standard) Cron job every 4 hours is a commonly used cron schedule.
https://www.digitalocean.com/community/tutorials/how-to-use-cron-to-automate-tasks-ubuntu-1804
*/15 * * * * - Run the command every 15 minutes. 0 4 * * * - Run the command every day at 4:00 AM. 0 4 * * 2-4 - Run the command every Tuesday, Wednesday, and Thursday at 4:00 AM. 20,40 */8 * 7-12 * - Run the command on the 20th and 40th minute of every 8th hour every day of the last 6 …
https://askubuntu.com/questions/20455/cron-scheduling-is-the-hour-argument-in-24h-format
This would run at the 4th and 16th minute of every hour. You're looking for: 0 4,16 * * * command. That will run at both 4am and 4pm. Or if the two commands are different: 0 4 * * * command 0 16 * * * another_command. The first column sets the minutes. In these examples, I'm setting it at 0 so the event happens on the hour.
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