Yes, this version works.
./check_disk -l
DISK OK - free space: / 5226 MB (39.53% inode=80%); /opt 37368 MB (75.12% inode=78%); /var 3052 MB (79.67% inode=96%); /opt/docker/devicemapper 37368 MB (75.12% inode=78%);| /=7994MB;;;0;13952 /opt=12370MB;;;0;50267 /var=778MB;;;0;4060 /opt/docker/devicemapper=12370MB;;;0;50267
Thanks a lot for your help.
Mike