All servers have the most common software already installed and available. See Software Modules for more information. Users do not have permission to install software on servers, unless it is installed in one's home directory (and does not require administrator privileges). If a software package is not available, users can submit requests to cshelpdesk@virginia.edu for software to be installed.

Users also have the option to compile software packages themselves, installing the software to an alternate location, however this should only be done under certain circumstances. The best option is to request packages to be installed, this way the software gets installed to all of our systems.

If you are building a package from source, you should use the configure script or the build environment variable to set an install-prefix of /usr/local. Then when you compile, the software will be configured to install exclusively to /usr/local when you install. Compiling and installing a typical package built using Autoconf/Automake looks like this:

abc1de@applecake ~ $ tar -xf coreutils-8.9.tar.xz
abc1de@applecake ~ $ cd coreutils-8.9
abc1de@applecake ~/coreutils-8.9 $ ./configure --prefix=/usr/local
checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
checking for a thread-safe mkdir -p... /usr/bin/mkdir -p
...
config.status: executing depfiles commands
config.status: executing po-directories commands
config.status: creating po/POTFILES
config.status: creating po/Makefile
abc1de@applecake ~/coreutils-8.9 $ make
make  all-recursive
make[1]: Entering directory `/u/abc1de/coreutils-8.9'
Making all in lib
make[2]: Entering directory `/u/abc1de/coreutils-8.9/lib'
...
...
abc1de@applecake ~/coreutils-8.9 $ make install
..

The /usr/local path is the conventional path for software which is installed locally to a system. This is for software which has a different version and/or configuration than the standard system software. For example, if you need your own alternate version of GCC, you can install it here. All you need to do to get ownership of /usr/local is to send a ticket to cshelpdesk@virginia.edu requesting it.

Software is installed by system admins in the /sw filesystem. This is a network filesystem filled with software that has been requested by faculty and students. Environment Modules manage software packages, please read the main article on modules for more information.