User Switching commands under Linux

Su-

#su-lyy

Executing this command means switching to the LYY user and re-reading the user environment-related configuration file, specifically executing the current user home directory. Bash_profile and. bashrc files, this we become full switch.

Su

#su Lyy

When executing this command, the system does not read the above two files, so we generally call it a half switch, so that after switching over, lyy users are still using the previous user's environment configuration information.

Sudo

sudo The primary purpose of this command design is to enable some users to have some special privileges for a particular user.

User Switching commands under Linux