限制 Ubuntu 用户权限

Question

I am using Ubuntu 20.04 to host my application. The device that hosts the application will deliver to the client, meaning I would like to strip the regular desktop user from every permission. After a research, I added to the user .bashrc file false aliases something like:

alias ls="printf ''"

The problem is that the user can still write every command under a specific path:

bin/su bin/cd

This way he has complete power over the system. I would love to get some help with this issue. Thank you all!

Answer 1

solution for restrict the terminal Create a group for terminal users

addgroup terminalusers
usermod -a -G terminalusers <user>
chown root:terminalusers /usr/bin/mate-terminal
chmod 750 /usr/bin/mate-terminal

After this process, the terminal would be blocked Buenos - you can block every application you want with the command which

Answer 2

This should do

addgroup <group-username>
usermod -a -G <group-username> <user>
chown root:<group-username> /usr/bin/<terminal-name>
chmod 750 /usr/bin/bash #permissions can be as per requirement like 760 etc

Ubuntu uses bash. On other distros we may have to see which shell and terminal they use eg gnome version of ubuntu has gnome terminal and bash. Kali has zsh (which I think is better).