Scientific Linux 7.0 is a distribution compiled from the source code for Red Hat Enterprise Linux 7. elrepo-release - this package contains the ELRepo driver yum repo and GPG key; epel-release - this package contains the EPEL driver yum repo and GPG key; OpenAFS - this package contains the OpenAFS driver and client utilities; SL_gdm_no_user_list - this package will disable the GDM user list in the chooser; SL_enable_serialconsole - will setup a serial console for login; SL_no_colorls - will disable the automatic colorized ls output; sl-bookmarks - replaces redhat-bookmarks and removes upstream branding...

About Scientific Linux

Scientific Linux is a recompiled Red Hat Enterprise Linux, co-developed by Fermi National Accelerator Laboratory and the European Organization for Nuclear Research (CERN). Although it aims to be fully compatible with Red Hat Enterprise Linux, it also provides additional packages not found in the upstream product; the most notable among these are various file systems, including Cluster Suite and Global File System (GFS), FUSE, OpenAFS, Squashfs and Unionfs, wireless networking support with Intel wireless firmware, MadWiFi and NDISwrapper, Sun Java and Java Development Kit (JDK), the lightweight IceWM window manager, R - a language and environment for statistical computing, and the Alpine email client.