~$ ls -l /usr/src/linux-headers-3.8.0-35-generic
total 916
drwxr-xr-x 3 root root   4096 led 11 14:22 arch
lrwxrwxrwx 1 root root     31 pro  4 18:57 block -> ../linux-headers-3.8.0-35/block
lrwxrwxrwx 1 root root     32 pro  4 18:57 crypto -> ../linux-headers-3.8.0-35/crypto
lrwxrwxrwx 1 root root     39 pro  4 18:57 Documentation -> ../linux-headers-3.8.0-35/Documentation
lrwxrwxrwx 1 root root     33 pro  4 18:57 drivers -> ../linux-headers-3.8.0-35/drivers
lrwxrwxrwx 1 root root     34 pro  4 18:57 firmware -> ../linux-headers-3.8.0-35/firmware
lrwxrwxrwx 1 root root     28 pro  4 18:57 fs -> ../linux-headers-3.8.0-35/fs
drwxr-xr-x 5 root root   4096 led 11 14:22 include
lrwxrwxrwx 1 root root     30 pro  4 18:57 init -> ../linux-headers-3.8.0-35/init
lrwxrwxrwx 1 root root     29 pro  4 18:57 ipc -> ../linux-headers-3.8.0-35/ipc
lrwxrwxrwx 1 root root     32 pro  4 18:57 Kbuild -> ../linux-headers-3.8.0-35/Kbuild
lrwxrwxrwx 1 root root     33 pro  4 18:57 Kconfig -> ../linux-headers-3.8.0-35/Kconfig
drwxr-xr-x 2 root root   4096 led 11 14:22 kernel
lrwxrwxrwx 1 root root     29 pro  4 18:57 lib -> ../linux-headers-3.8.0-35/lib
lrwxrwxrwx 1 root root     34 pro  4 18:57 Makefile -> ../linux-headers-3.8.0-35/Makefile
lrwxrwxrwx 1 root root     28 pro  4 18:57 mm -> ../linux-headers-3.8.0-35/mm
-rw-r--r-- 1 root root 919810 pro  4 18:57 Module.symvers
lrwxrwxrwx 1 root root     29 pro  4 18:57 net -> ../linux-headers-3.8.0-35/net
lrwxrwxrwx 1 root root     33 pro  4 18:57 samples -> ../linux-headers-3.8.0-35/samples
drwxr-xr-x 7 root root   4096 led 11 14:22 scripts
lrwxrwxrwx 1 root root     34 pro  4 18:57 security -> ../linux-headers-3.8.0-35/security
lrwxrwxrwx 1 root root     31 pro  4 18:57 sound -> ../linux-headers-3.8.0-35/sound
lrwxrwxrwx 1 root root     31 pro  4 18:57 tools -> ../linux-headers-3.8.0-35/tools
lrwxrwxrwx 1 root root     32 pro  4 18:57 ubuntu -> ../linux-headers-3.8.0-35/ubuntu
lrwxrwxrwx 1 root root     29 pro  4 18:57 usr -> ../linux-headers-3.8.0-35/usr
lrwxrwxrwx 1 root root     30 pro  4 18:57 virt -> ../linux-headers-3.8.0-35/virt