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Permissions

Root and Sudo

  • sudo - “substitute user and do”
  • su - “switch user”

Elevated User Groups

In the RHEL OS family, the sudo-enabled user group is called "wheel". In Ubuntu, it's "sudo".

  • example: usermod -aG sudo <USER>

Users & Permissions

  • chown - change user / group ownership
    • example: chown <USER> file.txt
  • chmod - change user / group permissions (mode)
    • example: chmod 644 file.txt