Linux su root和sudo su

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来自https://askubuntu.com/questions/86095/does-executing-sudo-su-and-su-root-do-the-same-thing?utm_medium=organic&utm_source=google_rich_qa&utm_campaign=google_rich_qa

Does executing sudo su and su root do the same thing?What are the technical differences between the two? The only thing I noticed is that

sudo su
requires you to enter your own password (assuming you’re not root)

su root
requires you to enter root’s password. However both seem to log you into the root user account.

The second command cannot be executed in a default Ubuntu installation, where the root account is not enabled.

But supposing you have unlocked the root account giving him a password, the two commands could only differ in the environment and shell variable set, I think. Compare the output of env in the two situations, and maybe also the output of set to see the differences.