Are there even systems for managing many desktop machines running Linux? - Could you push a patch to Linux systems and have it install at the user's convenienc

Are there even systems for managing many desktop machines running Linux? - Could you push a patch to Linux systems and have it install at the user's convenience (with some end date)? - Can you do that in waves without manually configuring things? - Can you remotely wipe a system if required? - Is there any popular anti-virus software for Linux, to protect company files in home folders from user mistakes? - Can you help users install some software without giving them full access, but also without requiring IT intervention for every installation?