I was working on some sem integration and after I moved sem out of my $PATH my system picked up /usr/bin/sem instead, which is a symlink to parallel.

$ ls /usr/bin/sem -lsa
0 lrwxrwxrwx. 1 root root 8 Feb 22 16:00 /usr/bin/sem -> parallel

Any idea what the the connection is? Might cause problems down the road if there is a naming conflict.