bitcoin@raspibolt:~ $ lsb_release -a
No LSB modules are available.
Distributor ID: Raspbian
Description: Raspbian GNU/Linux 10 (buster)
Release: 10
Codename: buster

bitcoin@raspibolt:~ $ cat /etc/os-release
PRETTY_NAME="Raspbian GNU/Linux 10 (buster)"
NAME="Raspbian GNU/Linux"
VERSION_ID="10"
VERSION="10 (buster)"
VERSION_CODENAME=buster
ID=raspbian
ID_LIKE=debian
HOME_URL="http://www.raspbian.org/"
SUPPORT_URL="http://www.raspbian.org/RaspbianForums"
BUG_REPORT_URL="http://www.raspbian.org/RaspbianBugs"

bitcoin@raspibolt:~ $ hostnamectl
   Static hostname: raspibolt
         Icon name: computer
        Machine ID: <hidden>
           Boot ID: <hidden>
  Operating System: Raspbian GNU/Linux 10 (buster)
            Kernel: Linux 5.10.103-v7l+
      Architecture: arm