Hi ;On 3/11/06, sean yang <seanatpurdue@xxxxxxxxxxx> wrote:> /usr/src/linux2.4/include/asm-i386/unistd.h> /usr/include/linux/unistd.h> /usr/include/unistd.h You are right about your assumptions. And usually, /usr/src/linux is a soft-linkto /usr/src/linux-<kernel version>/. You can chek that with a ls -l on /usr/src/ So, effectively, /usr/include/linux/unistd.h and /usr/src/linux2.4/include/asm-i386/unistd.h are pointing to the samefile. --Raseel.��������!���W��v������ޗ��{��f������ޖw�n'�������Y�����