Finding out Texture path on existing texture

[LordDz]

So I've been searching google for a way to find it, but couldn't find any help. What I want to do is to create a blend texture and use concrete/mainroad_01b as a basetexture, but as it's not written like that in the vmt file, how do I know what path to write there instead?

Thanks.

[poisonic]

its located in a cfg file its compressed in 1 big file in the steamapss folder somting like sourcematerials.cfg

[LordDz]

its located in a cfg file its compressed in 1 big file in the steamapps folder somting like sourcematerials.cfg

Thanks, but I've searched about every CFG with GCFScape, and couldn't find it.
But didn't L4D2 do something with Pak files, like they included that texture in there perhaps?

EDIT: Nvm, copied another texture that looked close enough.