How to get sudo to prompt you for a password each time

I find that if I execute something using sudo that then if I execute something else soon after also using sudo, that it does not prompt me for my password, and although this can be inconvenient in some situations, it is a security risk in others, and a hassle to keep on coming back and executing the command to make it prompt your for the password on the next go. So I was wondering if and how I could get it to prompt me every time, or for it to at least only remember my password for a very short amount of time?

Open Terminal and type:

sudo visudo

Then scroll down to the line that reads:

Defaults        env_reset

And change it to:

Defaults        env_reset,timestamp_timeout=0

You can change 0 to any values (time in minutes). Setting it to 0 will ask for your password every time and -1 will make it never ask. The default is 15 according to man sudo 8, but some manuals say the default is 5. Have a look at the RootSudoTimeout wiki for more information.

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