Run:
sh NVIDIA-Linux-x86-1.0-6629-pkg1.run --extract-only
This will create the directory NVIDIA-Linux-x86-1.0-6629-pkg1 which contains the uncompressed contents of the .run file.
Run:
sh NVIDIA-Linux-x86-1.0-6629-pkg1.run --extract-only
This will create the directory NVIDIA-Linux-x86-1.0-6629-pkg1 which contains the uncompressed contents of the .run file.