Linux Commands: Substitute user identity


su-Linux Command

su command- Substitute user identity
Syntax: su [options]... [user [arg]...]

Description: The su Substitute User command allows you to become other existing users on the system. For example you can temporarily become root and execute commands as the super-user root. If you don't want anyone to su to root or restrict su command to certain users then add the following two lines to the top of your su configuration file in the /etc/pam.d/ directory. We highly recommend that you limit the person allowed to su to the root account.

Example:

Related: chroot, id, logname

Other Linux Commands:
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