Working from a list of WordPress sites on a shared hosting environment (sites.txt), this script will print the DB name and login URL for each site.

DB_report.sh

i=1
touch urls.txt
COUNT=$(wc -l sites.txt)
for SITE in $(cat sites.txt)
do
    cd $SITE
    echo "Working on $SITE ($i of $COUNT)..."
    echo "## $SITE" >> ../urls.txt
    url=$(wp option get siteurl)
    postURL="/wp-login.php"
    db=$(wp config get DB_NAME)
    echo "DB: $db" >> ../urls.txt
    echo $url$postURL >> ../urls.txt
    echo "----------------" >> ../urls.txt
    echo " " >> ../urls.txt
    echo " " >> ../urls.txt
    echo " " >> ../urls.txt
    ((i=i+1))
    clear
    cd ..
done