Creating Cronjobs can be done in a variety of ways and the exact steps depend on your operating systems and the framework you are using to execute your script.
Here is a general example on how to create a cronjob on a linux distribution:
1. Make sure that your file is executable by running ```chmod +x my-file.sh``` in your terminal.
2. Use the command ```crontab -e``` to open the file containing your cron definitions
3. Add the following line to the file ```0 17 * * 5 /bin/bash /path/to/my-file.sh``` 
4. Save the file

Now every friday at 5pm your bash script will automatically be started.
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