Once SteamCMD is running, you will see a Steam> prompt. Follow these steps to download or update a server.
The Steam Master Server Updater (often referred to by its filename hldsupdatetool) was the original command-line utility provided by Valve Software. Its primary purpose was to allow server operators to download, install, and update dedicated game servers for Valve titles (like Counter-Strike 1.6, Day of Defeat, Team Fortress Classic, and Counter-Strike: Source) without needing to install the full Steam client on the server machine. steam master server updater download
Before the era of SteamCMD, this tool was the gold standard for: Once SteamCMD is running, you will see a Steam> prompt
If you have a specific reason to use the legacy hldsupdatetool instead of SteamCMD, here is how to operate it. Once SteamCMD is running