}
# Print the current OS. The following OS are supported at the moment:
+#
# - Debian (debian)
# - Gentoo (gentoo)
# - Mac OS X (darwin)
# - Solaris/OpenSolaris (sun)
# - FreeBSD (freebsd)
+#
# If an unsupported OS is used an error is printed.
os() {
if test -f /etc/debian_version; then