+
+# Maxima, a symbolic algebra program.
+if installed maxima; then
+ link maxima ~/.maxima
+fi
+
+# MySQL client
+if installed mysql; then
+ link mysql/my.cnf ~/.my.cnf
+fi
+
+# perlcritic to check Perl programs for common problems.
+if installed perlcritic; then
+ link perl/perlcriticrc ~/.perlcriticrc
+fi