Please help to identify the following description belonging to which technique in MITRE and the corresponding tactics: Fysbis has used the command <code>ls /etc | egrep -e"fedora\*|debian\*|gentoo\*|mandriva\*|mandrake\*|meego\*|redhat\*|lsb-\*|sun-\*|SUSE\*|release"</code> to determine which Linux OS version is running.