Crontab is a command that allows you to schedule commands or scripts to run automatically at specific times or intervals. It’s a very useful tool for automating repetitive tasks, such as running backups, updating files, or sending emails.
Here’s how to use crontab:
- Open a terminal window on your server.
- Type this command to edit your crontab file:
crontab -eThis will open your crontab file in the default text editor.
- In the crontab file, add a new line for the command or script you want to run. The format for the line is:
* * * * * commandThe five asterisks represent the minute, hour, day of the month, month, and day of the week when the command will run. You can use numbers or special characters (e.g., * for all values) to specify when the command should run.
- After adding your command to the crontab file, save and exit the text editor.
- Your new crontab entry is now active and will run automatically at the specified times.
Note that crontab uses the system time zone, so make sure to specify the correct time zone in your commands or scripts if necessary.
Overall, crontab is a powerful tool that can help you automate many tasks on your server. By using crontab, you can save time and increase the efficiency of your workflows.