Updates all standard WordPress sites hosted on a cPanel server - both core and plugins. Also snoops for WP installs in a root directory (sub-sites).

cpanel-wp-update-all.sh

#!/bin/bash

for i in `/usr/local/cpanel/bin/apitool listaccts --output json | jq -r '.data.acct[] | select(.suspended == 0) | .user'`; do 
    echo "Updating account: ${i}"; 
    su -s /bin/bash -c "wp core update --path=/home/${i}/public_html/" $i; 
    su -s /bin/bash -c "wp plugin update --path=/home/${i}/public_html/ --all" $i;  
    
    for subsite in `find /home/${i}/public_html/ -name "wp-config.php" | grep -Po "/home/${i}/public_html/\K.*(?=/wp-config.php)"`; do 
        echo "Updating sub-site account: ${subsite}";
        su -s /bin/bash -c "wp core update --path=/home/${i}/public_html/${subsite}/" $i; 
        su -s /bin/bash -c "wp plugin update --path=/home/${i}/public_html/${subsite}/ --all" $i;  
    done
done