Hello, I am new to the linux world and I have installed Eclipse, with CDT. I am running the simplescan code off this website http://people.csail.mit.edu/albert/bluez-intro/c401.html and I am getting these errors: simplescan.c:6:33: error: bluetooth/bluetooth.h: No such file or directory simplescan.c:7:27: error: bluetooth/hci.h: No such file or directory simplescan.c:8:31: error: bluetooth/hci_lib.h: No such file or directory simplescan.c: In function 'main': simplescan.c:12: error: 'inquiry_info' undeclared (first use in this function) simplescan.c:12: error: (Each undeclared identifier is reported only once simplescan.c:12: error: for each function it appears in.) simplescan.c:12: error: 'ii' undeclared (first use in this function) simplescan.c:28: error: 'IREQ_CACHE_FLUSH' undeclared (first use in this function) simplescan.c:29: error: expected expression before ')' token simplescan.c:36: warning: incompatible implicit declaration of built-in function 'memset' simplescan.c:39: warning: incompatible implicit declaration of built-in function 'strcpy' simplescan.c:46:2: warning: no newline at end of file I can see these header files: /usr/src/kernels/2.6.19-1.2911.fc6-i686/include/net/bluetooth/bluetooth.h /usr/src/kernels/2.6.19-1.2911.fc6-i686/include/net/bluetooth/hci.h /usr/src/kernels/2.6.19-1.2911.fc6-i686/include/net/bluetooth/hci_core.h /usr/src/kernels/2.6.19-1.2911.fc6-i686/include/net/bluetooth/l2cap.h /usr/src/kernels/2.6.19-1.2911.fc6-i686/include/net/bluetooth/rfcomm.h /usr/src/kernels/2.6.19-1.2911.fc6-i686/include/net/bluetooth/sco.h Where is the hci_lib.h header file? Can anyone please assist me? Meena