Birmingham mumbai

Using sudo to run privileged commands
I'll go over how to manage 
sudo
 later on in this chapter, but for now, just keep in 
mind that the purpose of 
sudo
 is to enable you to use your user account to do things 
that normally only 
root
 would be able to do. For example, as a normal user, you 
cannot issue a command such as the following to install a software package:
apt install tmux
Instead, you'll receive an error:
E: Could not open lock file /var/lib/dpkg/lock-frontend - open (13: 
Permission denied)
E: Unable to acquire the dpkg frontend lock (/var/lib/dpkg/lock-
frontend), are you root?
But if you prefix the command with 
sudo
 (assuming your user account has access to 
it), the command will work just fine:
sudo apt install tmux
An exception to this rule is that some VPS providers, such as 
DigitalOcean, will enable the 
root
 account even on their Ubuntu 
servers. Typically, the 
root
 password will be randomly generated 
and emailed to you. However, you should still create a user for 
yourself with administrative access regardless.

---

Chapter 2