...for memory blanks
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cat /etc/os-release |grep ^VERSION_ID=|cut -f2 -d'"' 8.10
cat /etc/os-release |grep ^VERSION_ID=|cut -f2 -d'"'|cut -f1 -d'.' 8
cat /etc/os-release |grep ^VERSION_ID=|cut -f2 -d'"'|cut -f2 -d'.' 10