![]() If you want your script to run every 12 hours, try using the below-shown command followed by the script file path. In these examples, we will be using some bash script stored in the file “sleep.sh” to be executed at a specific time in our system. ![]() You can delete all the comments and start writing the cron jobs.Īs the cron jobs help us secure our system and make backups, so we will take a look at a few examples. It will be shown from right now at every opening. You can also utilize the shown below crontab command to open the file.Īnother time, when we have opened the crontab configuration file within the nano editor, the output is shown below. Let’s open the crontab configuration file once again with the nano editor command. It will tell you that there is no scheduled cron job right now and ask you to enter 1,2,3 according to the need. It’s a simple 1-word command using the “-e” flag as shown below. The 1st integer value shows minute, 2nd shows hour, 3 rd shows a day of the month, 4 th shows the month name, and the 5th shows the week.Īnother method can also be utilized to open the crontab configuration file. We will not get this output screen of the crontab file after that. The configuration crontab file is located in the “etc” folder and can be launched within the GNU Nano editor using the below query. We will take a look at the crontab configuration file and the syntax it shows us for scheduling. So, we will be using it to schedule some jobs. ![]() ![]() Currently, there are no cron jobs as shown below.Īs we already know, the crontab file is the configuration file for scheduling cron jobs. Thus, we will use the crontab command with the “-l” flag in it to list all the scheduled cron jobs on our system. The command output is showing that the cron service is currently active.Īs we mentioned earlier, the crontab file has been utilized to check the already scheduled cron jobs for a specific system. After starting it, enable the cron service and you will get the below-shown output.Īfter that, you can check out the status of a cron service by utilizing the systemctl command ith keyword “status”. The command uses the keyword “cron” after the word “install” as shown below and starts installing it.Īfter the successful installation, you need to start the cron utility by utilizing the system command i.e., systemctl keyword with “start” and mentioning the name of the utility i.e. Now, the same apt package will be used to install the cron utility in our system. The apt command has been preferred to update the system followed by the sudo password. Make sure to update your system before any task. This article will be explaining the way to schedule the cron jobs within Ubuntu 20.04 using some simple examples. Crontab is a configuration document that includes details about the timing and commands/scripts that should be run. In Ubuntu, the crontab directory records the cron jobs. Cron may be used to schedule any repetitive processes. The planned process is Windows’ counterpart. It’s typically used for machine administration tasks like backups and clean-up folders. Cron tasks (cron) operate regularly at predetermined times, dates, and durations. Users of Unix – Like operating systems could use Cron to schedule the execution of instructions or programs at a specific time and date. Cron is a Linux – based OS program that schedules jobs depending on some specified time.
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