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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://crontab.guru/every-4-hours
sunday (non-standard) Cron job every 4 hours is a commonly used cron schedule.
https://linuxapt.com/blog/149-schedule-a-job-in-cron-to-run-every-hour-in-ubuntu-20-04
$ crontab –e. To Run a program or script every 5 or X minutes or hours on Linux: 1. Edit your cronjob file by running crontab -e command. 2. Add the following line for an every-5-minutes interval. */5 * * * * /path/to/script-or-program. 3. Save the file, and that is it.
https://www.digitalocean.com/community/tutorials/how-to-use-cron-to-automate-tasks-ubuntu-1804
Feb 01, 2020 · */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 months of the year.Day of the month: 1-31
https://www.unix.com/unix-for-dummies-questions-and-answers/160529-execute-crontab-every-4-hours-begin-current-time.html
May 30, 2011 · Code: 00 */4 30 05 * root date >>/tmp/cronout. The above will execute the date command for every 4 hours like 4,8,12,16,20,24 on 30th May, for example I start the crontab at 02:00:00. But if I start the crontab at 09:15:00, it should execute the crontab command after 4 hours like 13:15:00, then 17:15:00 like this.
https://stackoverflow.com/questions/6423532/how-to-run-cron-job-every-2-hours
Jun 20, 2011 · if your cron supports it, 0-23/2 is every even hour and 1-23/2 is every odd hour, but I'd prefer */2 still. – Betlista. May 25 '20 at 7:27. Add a comment 17 ... Browse other questions tagged ubuntu cron or ask your own question. The Overflow Blog Podcast 377: You don’t …
https://askubuntu.com/questions/13730/how-can-i-schedule-a-nightly-reboot
would reboot your system every day at 4:05am. (4:00am + 5 minutes) Ctrl+X, Y, Enter should get you out of crontab (if using nano) Note: you might have to run crontab -e as root, because shutdown needs root. crontab -e opens a file in /tmp instead of the actual crontab so that it can check your new crontab for errors. If there are no errors, then your actual crontab will be updated.
https://unix.stackexchange.com/questions/479579/how-to-schedule-a-command-to-execute-in-every-2-hours
1. cron is Linux's internal job scheduler.It helps in schedule your command to run at particular interval or date_time. type crontab -e on the terminal. add this line 0 */2 * * * path/to/java …
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