Debian system. Investigating a high network activity notification for a system that should be idle. Type 'netstat'. Doesn't have 'netstat'. Install the package. Check for open ports. I know, I'm not a real, modern SRE/security admin. Check to see if anyone had logged in recently. Type 'last' as root. Doesn't have a 'last' command. Search for "debian last package". Obviously no usable results. I hate Linux. Hundreds of megabytes of junk and they try to shave the little utilities that are actually useful.