How to check Ubuntu for virus?

How to Scan Your Ubuntu System for Viruses

If you're looking to scan your Linux server for potential threats, there are several effective tools at your disposal. Some notable options include ClamAV, Rkhunter, Chkrootkit, Lynis, and Linux Malware Detect (LMD). Among these, ClamAV stands out as a free, versatile, and open-source antivirus solution designed to identify malware, viruses, and various types of malicious software on your system.