LoadRunner 12 / Load Generator Unix/Linux

I have installed HPELR_1255_Community_Edition

and i want to install load generator on linux environment 

i have read the guide and i am lost with step 4 that says 

Change directory to /<installation root directory>/InstData/Linux/VM. The <installation
root directory> is any path that contains the Web_Installers folder, for example /tmp/Web_
Installers. Copy the installation folder to this location

where i should change directory ? and how ? 

there is no linux folder in my HPELR directory ? 

can you explain this step more and make it clear