This line returns nothing: yum --enablerepo=sl-source list available *src.rpm Loaded plugins: aliases, changelog, downloadonly, fastestmirror, refresh- : packagekit, security, tmprepo, verify, versionlock Loading mirror speeds from cached hostfile * elrepo: elrepo.org * epel: mirrors.solfo.com * rpmforge: mirror.cpsc.ucalgary.ca * sl: ftp1.scientificlinux.org * sl-security: ftp1.scientificlinux.org * sl-source: ftp1.scientificlinux.org Error: No matching Packages to list Now, I know that's not really empty. I just used ftp to download the libusb1 source RPM. Even getting specific does not work. yum --enablerepo=sl-source list available libusb1-1.0.3-1.el6.src.rpm Loaded plugins: aliases, changelog, downloadonly, fastestmirror, refresh- : packagekit, security, tmprepo, verify, versionlock Loading mirror speeds from cached hostfile * elrepo: elrepo.org * epel: mirrors.solfo.com * rpmforge: mirror.cpsc.ucalgary.ca * sl: ftp1.scientificlinux.org * sl-security: ftp1.scientificlinux.org * sl-source: ftp1.scientificlinux.org Error: No matching Packages to list Am I suffering a senior moment and missing something important? {o.o}