Linux is a Unix-like, mostly POSIX-compatible operating system. It is among the most widely used operating systems today.
Bash is a Unix shell and command language. It's the default shell on the majority of Linux distributions and macOS. Bash is a command processor, which means that a user’s prompt causes the OS to take an action. As the most common shell, all good Linux developers and operators should be familiar with Bash.
Environment variables affect the way running processes will behave on a computer. As they are central to how a computer behaves, they are an important topic for any developer to be familiar with.
Public questions (free account) are common interview questions. They are great for practicing, or if you want to filter candidates using the classic problems.
This is a part of latest question addition to our question library.
The PATH variable is set in /etc/environment:
And updated in .bash_profile:
Select all of the statements are correct.