Somebody in the thread at some point said: > MAHESH wrote: >> i am using fedora 7 in my system its kernel version is 2.6 while >> programming it is not executing the commands insmod & lsmod and when > You probably want to install -devel {for compiling kernel module > interfaces} or -headers {all} > yum install kernel-devel or yum install kernel-headers kernel-headers contains mutant kernel includes that have been "sanatized for userspace", if he's trying to do "kernel level programming" then he wants specifically the kernel-devel stuff. But I think maybe he is telling us about a second problem.... insmod and lsmod and so on live down /sbin, and only root has /sbin in its PATH by default. You can still run lsmod anyway as a normal user, but you will have to run it as /sbin/lsmod or add /sbin to your PATH. But really to do anything useful you will want to run them as root, where you will also be able to run them without giving the /sbin/ in front. -Andy