Hacker News new | ask | show | jobs
by DVk6dqsfyx5i3ii 1922 days ago
> as generated by for example `head -c 30 /dev/urandom | base64 | tr -d '+/='`

If you want exactly 30 alphanumeric characters you could do `tr -dc '[:alnum:]' < /dev/urandom | head -c 30`