I was reading about packages, and I wondered what are package names for commands like "ls" and "echo"? These commands were installed on every Linux machine I've worked with, and I don't know which package installs them.
$ sudo apt purge ls
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package ls
$ sudo apt purge echo
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package echo
And the same thing happened for lots of other commands.
Q1. Is there any package which has all these primary commands in?
Q2. Do "ls" or "echo" or ... have a package? or they are just some commands?
Q3. How can I find the package name of commands like "ls", "echo", "read" and so other?
