Local Admin to Standard user

Have you already tried doing some searches here for similar topics? I have to believe there are several threads already that discuss this and may have example scripts being used to do it.

Hey Saud,

Look into the dseditgroup man page, that should point you in the right direction.

Agreeing with SincerelyJoshin, dseditgroup should be your answer. Here is a sample line of code for demoting user "janedoe" from an administrator to a standard user. I found it yesterday while seeking the same information.

dseditgroup -o edit -d janedoe -t user -L admin

This is what we use. We just removed admin rights from about 90 people with this script. It removes rights from anyone except those specified, here root, youradmin1, and youradmin 2 would be left as admins. You can add as many admins as you'd like to stay admin.

#!/bin/sh

adminUsers=$(dscl . -read Groups/admin GroupMembership | cut -c 18-)

for user in $adminUsers
do
    if [ "$user" != "root" ]  && [ "$user" != "youradmin1" ] && [ "$user" != "youradmin2" ]
    then 
        dseditgroup -o edit -d $user -t user admin
        if [ $? = 0 ]; then echo "Removed user $user from admin group"; fi
    else
        echo "Admin user $user left alone"
    fi
done

I was able to accomplish this using this simple script, where John is the Username;

dscl . -delete /Groups/admin GroupMembership john

Hope this was helpful