Hello.
Are there OS-specific commands or tasks on the LFCS exam?
For example, setting up a network via netplan on Ubuntu or editing /etc/sysconfig/network-scripts on Centos.
For example, What package is file part of? rpm -qf file on Centos , dpkg --search file on Ubuntu
This is a good question to try on the Linux Foundation contact system. As far as I know, they use Ubuntu servers for the exam, but I could be wrong; officially, the exam is “distribution neutral”