How can I create a SEO friendly dash-delimited url from a string?

Question

Take a string such as:

In C#: How do I add \"Quotes\" around string in a comma delimited list of strings?

and convert it to:

Answer 1

Solution in shell:

echo 'In C#: How do I add "Quotes" around string in a comma delimited list of strings?' | \
    tr A-Z a-z | \
    sed 's/[^a-z0-9]\+/-/g;s/^\(.\{1,20\}\).*/\1/'