Command explanations make World 2>&1 | tee xfree-compile.log &&: This command runs multiple makefiles to completely rebuild the system. 2>&1 redirects error messages to the same location as normal output. The tee command allows viewing of the output while logging the results to a file. When rebuildng, a separate command that may be used if only minor changes are made to the sources is make Everything. This does not automatically remove generated files and only rebuilds those files or programs that are out of date. ln -sf /usr/X11R6/bin /usr/bin/X11, ln -sf /usr/X11R6/lib/X11 /usr/lib/X11, and ln -sf /usr/X11R6/include/X11 /usr/include/X11: These commands are present to enable other (broken) packages to build against XFree86. We do this even though the Filesystem Hierarchy Standard says: "In general, software must not be installed or managed via the above symbolic links. They are intended for utilization by users only."