Gmod 13 copied from Steam folder, how to run it?


New Member
Hello i got garrysmod folder, copied straight from my friends steam account. We tried to use revlauncher but its not working.
I have hl2.ex and those folders and files in it [used "ls" in terminal, just becouse im on linux now]

So, on Windows [and linux] i cant run HL2 becouse i got "No steam" error. I tried to copy garrysmod folder to HL2:DM then run hl2.exe with "-game garrysmod" parameter but its not working too.
Can somebody tell me what to do now? I dont want to download Gmod 13 cracked already, my internet is really poor [like my English. sorry for that too]