@jtrant We're using the following to capture the username:

#!/bin/bash

####################################################################################################
# Extension Attribute to determine the Enterprise Connect Username
####################################################################################################

# Get the logged-in user's username
loggedInUser=$( /usr/bin/stat -f %Su "/dev/console" )

if [[ ${loggedInUser} == "root" ]]  || [[ ${loggedInUser} == "localadmin" ]] || [[ ${loggedInUser} == "adobeinstall" ]] || [[ ${loggedInUser} == "_mbsetupuser" ]] ; then

    result="${loggedInUser}"

else

    if [[ -e "/Applications/Enterprise Connect.app/Contents/SharedSupport/eccl" ]] ; then

        adUsername=$( /usr/bin/su - "${loggedInUser}" -c "/Applications/Enterprise Connect.app/Contents/SharedSupport/eccl -p adUsername" | /usr/bin/sed 's/adUsername: //' )

        if [[ ${adUsername} == "missing value" ]]; then   # Enterprise Connect installed, but user is NOT logged in

            result="${loggedInUser} NOT logged into Enterprise Connect"

        else    # Enterprise Connect installed and the user is logged in

            result="${adUsername}"

        fi

    else

        result="${loggedInUser} NOT logged into Enterprise Connect; eccl missing"

    fi

fi

echo "<result>${result}</result>"

exit 0

Signed-in Status would be:

/Applications/Enterprise Connect.app/Contents/SharedSupport/eccl -p signedInStatus | /usr/bin/sed 's/signedInStatus: //'

That's exactly what I'm looking for. Thank you Dan!