Script to update user info via API

@awginger

Something like this may help you?

#!/bin/bash


jssURL="https://xxxxx.jamfcloud.com"

## DO NOT EDIT BELOW THIS LINE ##

echo "Please enter your JSS username:"
read jssUser

echo "Please enter your JSS password:"
read -s jssPass

usersToGetAtOneTime="10000"

# Make sure xmlstarlet is installed
if ! command -v xmlstarlet > /dev/null ; then
    echo "You must install xmlstarlet before using this script."
    echo "Try "brew install xmlstarlet""
    exit 1
fi

# Get list of users
echo "Downloading list of user IDs..."
while read -r line; do
    ids+=("$line")
done <<< "$(curl -X GET -k -s -u "$jssUser:$jssPass" "$jssURL/JSSResource/users" | xmlstarlet sel -t -v '/users/user/id')"

# Find users with roster_managed_apple_id in
echo "Gathering User Information"
count="$usersToGetAtOneTime"
for id in "${ids[@]}"; do
    managedAppleID=$(curl -X GET -k -s -u "$jssUser:$jssPass" "$jssURL/JSSResource/users/id/$id" | xmlstarlet sel -t -v '/user/roster_managed_apple_id')

# Update Managed Apple ID if Roster Managed Apple ID Exists   
if [ -z "$managedAppleID" ]
then
    echo "No Managed Apple ID, moving on"
else
    echo "$managedAppleID"
    curl -X PUT -H "Accept: application/xml" -H "Content-type: application/xml" -k -u "$jssUser:$jssPass" -d "<user><managed_apple_id>$managedAppleID</managed_apple_id></user>" "$jssURL/JSSResource/users/id/$id"
    ((count--))
fi
done

exit 0