1. Check the OS version and core version#uname -a#more /etc/redhat-release2. Create relative directories/usr/src/redhat/SOURCES    //Store source codes, patches, icons etc/usr/src/redhat/SPECS        //Store specs about the process of building RPM packages/usr/src/redhat/BUILD     //File after uncompressed are stored here/usr/src/redhat/RPMS     //Store the binary files built with rpmbuild/usr/src/redhat/SRPMS   //Store source code package built with rpmbuild #mkdir -p /usr/src/redhat/#cd /usr/src/redhat/...