Sometimes when I'm testing, I just need an UID and I don't particularly care about the ID portion. This little alias generate based on any string really (though should be FQDN).
alias genEuid='generateEddystoneUID'
generateEddystoneUID() {
echo -n $1 | sha256sum | cut -b-10 | tr -d \\n | xxd -pu | xargs -I{} printf '%s%s' {} `od -vAn -N6 -tx2 < /dev/urandom | tr -d ' '`
}
~
➜ genEuid justinribeiro.com
65373765363530616464b11dc3de8f2b