su (Unix)
The Unix command su, which stands for 'substitute user' (or historically 'superuser'), is used by a computer user to execute commands with the privileges of another user account. When executed it invokes a shell without changing the current working directory or the user environment.
| Original author(s) | |
|---|---|
| Developer(s) | AT&T Bell Laboratories |
| Initial release | November 3, 1971 |
| Operating system | Unix and Unix-like |
| Type | Command |
When the command is used without specifying the new user id as a command line argument, it defaults to using the superuser account (user id 0) of the system.
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