Red Hats make us all the same as idiots.

Red Hat is easy to use, ...... Many Commands are made by their own units ...... Standard Linux does not have their commands, and some commands on its own system cannot be used together. Many ProgramIt is also chilling to make the call .... I used an hour ...... Sin, sin .....
Do not use commands such as service crond stop together with self-starting commands. do not recognize standard Linux commands or red hats. Fortunately, I have experience in operating gun Linux. Otherwise, I still don't know when the error is.