@ sign in ls -la command--Extended Attribute

[Macpaq]

I am curious about this,

 

After installed some kexts downloaded from the net, I did a ls -la to check if they have the correct owner and permissions. It reads something like this,

 

drwxr-xr-x@,

 

the d r w x are obvious, but for awhile I could not figure out what the @ is for, after some search, turn out it's some thing called Extened Attribute Leopard adds to any files that was downloaded from the net. I am curious if this Extended Attribute would cause the kext not to load properly? On my Leopard hack in the /S/L/E I have a few of these kexts, they seem to work fine, but I just want to be sure.

 

I did write a bash script that will remove the Extened Attribute but I don't know if that is necessary?

 

Does anyone know?

 

TIA.