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willsheppard/sudoers_cheat_sheet.md

Last active October 9, 2023 08:18
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Sudoers cheat sheet
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sudoers_cheat_sheet.md

Define text editor

$ sudo update-alternatives --config editor

Edit /etc/sudoers file

$ sudo visudo /etc/sudoers

Add a user to sudo group

$ sudo usermod -aG sudo username
or
$ sudo gpasswd -a username sudo

(but CentOS uses "wheel" group instead)

Default config for Ubuntu 22:

# User privilege specification
root    ALL=(ALL:ALL) ALL

# Members of the admin group may gain root privileges
%admin ALL=(ALL) ALL

# Allow members of group sudo to execute any command
%sudo   ALL=(ALL:ALL) ALL

Remove login for default users:

$ usermod -s /usr/sbin/nologin username

Sources:

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