Hm.. strange. DisplayCal is a software for colour correction of LCD monitors- mainly for photo and video editing.
I ran the commands. Here are the results:
[ray@GiantRaffy ~]$ ls -l /usr/bin/sozi
lrwxrwxrwx 1 root root 14 Oct 27 14:00 /usr/bin/sozi -> /opt/sozi/Sozi
[ray@GiantRaffy ~]$ ls -l /opt/Sozi
ls: cannot access '/opt/Sozi': No such file or directory
I hope this yields clues. Thank you!