Execute a command as another user?

From man pages for su -

To execute command with the temporary environment and permissions of user bin, type:

example% su - bin -c "command args"

The other option is sudo. If you look up sudo you should find docs on how to set it up and use it. I prefer being able to log in as myself and su to root and then work, but some companies don't let you do that for security. So being able to use sudo let's you run any command as either root or some user you have specified in the sudo configuration.

A command would be simple:
# sudo ls -la
Password:
#

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"Only two things are infinite, the universe and human stupidity, and I'm not sure about the former."
Albert Einstein

Thanks SANEngInCO and dandan123 for the reply.
I will try it out.