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The sudo command is a critical tool in the arsenal of nearly every Linux user. It stands for "superuser do" and allows a permitted user to execute a command with the security privileges of another user, typically the superuser or root. While sudo indeed functions similarly across many Linux distributions, there are nuances and default settings that can differ significantly, particularly between popular distros like Ubuntu and RHEL (Red Hat Enterprise Linux)-based systems, such as CentOS or Fedora. Here, we dive into how sudo works, focusing on its implementation and use in Ubuntu compared to RHEL-based distributions. Regardless of the distribution, the basic usage of sudo remains largely the same.