The difference between the Linux command Su and su-

The most essential difference between the SU command and the Su-command is that Su simply switches the root identity. But the shell environment is still a normal user's shell. And Su-even the user and shell environment to switch to root identity. The PATH environment variable error does not occur only if you switch the shell environment. After the SU switch to the root user, PWD, found that the working folder is still a normal user's working folder, and after the Su-command switch, the working folder becomes root working folder. Use the echo $PATH command to see how the Su and Su-future environment variables are different.

And so on To switch from the current user to another user, you should use the Su-command.

The difference between the Linux command Su and su-