Working from a list of WordPress sites on a shared hosting environment (sites.txt), create a report of each sites WordPress version.

wp_version_report.sh

# prints a report of the WP version
i=1
touch version.txt
COUNT=$(wc -l sites.txt)
for SITE in $(cat sites.txt)
do
    cd $SITE
    echo "Working on $SITE ($i of $COUNT)..."
    echo "## $SITE" >> ../version.txt
    url=$(wp option get siteurl)
    version=$(wp core version)
    echo $url >> ../version.txt
    echo $version >> ../version.txt
    echo "----------------" >> ../version.txt
    echo " " >> ../version.txt
    echo " " >> ../version.txt
    echo " " >> ../version.txt
    ((i=i+1))
    clear
    cd ..
done