UNIX/LINUX - Run Scripts without Password

Thursday, April 25th, 2024 | System
Last Modified: 2024-05-10



Running scripts located in /usr/local/sbin without entering the root password requires setting up sudo to allow specific commands to be executed by specific users without asking for a password. Here's a step-by-step guide on how to do this:

  1. Edit the sudoers file:

    Use the command sudo visudo to edit the sudoers file safely. This ensures syntax checking and prevents saving errors that could lock you out of sudo.

  2. Add a specific entry:

    In the sudoers file, you'll need to add an entry that specifies which commands can be run without a password. The general format is:

    username ALL=(ALL) NOPASSWD: /usr/local/sbin/script_name

    Replace username with your actual username and /usr/local/sbin/script_name with the full path to the script you want to run without a password.

  3. Multiple scripts:

    If you want to allow multiple scripts to be run without a password, you can list them all, separated by commas:

    username ALL=(ALL) NOPASSWD: /usr/local/sbin/script1, /usr/local/sbin/script2
  4. Wildcard usage:

    If you want to allow all scripts in /usr/local/sbin, you can use a wildcard. However, be cautious with this approach as it can pose a security risk:

    username ALL=(ALL) NOPASSWD: /usr/local/sbin/*
  5. Save and exit:

    After making the changes, save and exit the editor. If you're using visudo, it will check the syntax before saving.

  6. Test your setup:

    Try running the script with sudo without entering the password:

    sudo /usr/local/sbin/script_name

    If set up correctly, it should run without asking for the root password.

Remember, allowing scripts to run as root without a password can be a significant security risk, especially if those scripts are writable by non-root users. Always ensure that the scripts are secure and monitored regularly for unauthorized changes.




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