Apple Software Updates

Here is the command from a terminal window.

sudo softwareupdate -i -a

To run this remotely you will have to enable SSH and remote console into the PC.
Alternatively use the remote desktop feature and run the updates via GUI.

Hope that helps.

I tried that command unsuccessfully. I get the following error: sudo: no tty present and no askpass program specified.  I thought that this installed all updates.

What happens when you enter :

sudo softwareupdate

You should see the usage output like this:

usage: softwareupdate <mode> [<args> ...]

      -l | --list            List all appropriate updates
      -d | --download            Download Only
      -i | --install            Install
            <label> ...      specific updates
            -a | --all            all appropriate updates
            -r | --recommended      only recommended updates

      --ignore <label> ...      Ignore specific updates
      --reset-ignored            Clear all ignored updates
      --schedule (on | off)      Set automatic checking

      -v | --verbose      Enable verbose output
      -h | --help      Print this help


Please also try:

sudo softwareupdate --install --all

This just worked for me and I am using 10.7

with ARD send it as root.  You do not need to sudo a unix command in ARD as long as you are authenticated int eh ARD database as an admin user for this computer.