## auto-jobs ### Instructions In this exercise, you will create four files called `task1`, `task2`, `task3`, and `task4`, which will contain the necessary formulas to set up a group of scheduled tasks in the group ##### task1: Time: `Every Friday, at 20:41` Command: `echo "01"` ##### task2: Time: `Every minute` Command: `sh /home/user01/check` ##### task3: Time: `Everyday midnight at 12 AM` Command: `sh /home/user01/backup` ##### task4: Time: `After Every Reboot` Command: `01exec` All files content must be in this format: ```console $ cat task-example | cat -e * * * * * {command}$ $ ``` Once it is done, use the command below to create the file `auto-jobs.tar` to be submitted. ```console $ tar -cf auto-jobs.tar task1 task2 task3 task4 $ ls task1 task2 task3 task4 auto-jobs.tar ``` **Only `auto-jobs.tar` should be submitted.** ### Hints Linux Cron utility is an effective way to schedule a routine background job at a specific time and/or day on an on-going basis. You can use the `crontab` command to manage your jobs. This command can be called in four different ways: `crontab -l`: List the jobs for the current user `crontab -r`: Remove all jobs for the current users. `crontab -e`: Edit jobs for the current user. ##### Linux Crontab Format: `MIN HOUR DOM MON DOW CMD` ##### Table: Crontab Fields (Linux Crontab Syntax): ![Table: Crontab Fields](https://assets.01-edu.org/devops-branch/cronTasks-Table.png) ##### Examples: 1. Schedule a job every hour at the fifth minute, every day: `5 * * * * {command}` 2. Schedule a job 5 minutes after midnight every day: `5 0 * * * {command}` > You have to use Man or Google to know more about commands flags, in order to solve this exercise! > Google and Man will be your friends! ### References - [an editor for cron schedule expressions](https://crontab.guru/).