Hi,
Typically when user 'root' runs commands they must use full path, or local path for the commands, unless the $PATH environmental variable is set to contain the directory where the executables reside.
To be sure you are running the extracted files, you probably should run like:
[root@itsm5 bin]# ./rebot --version
Most certainly you have another old install of Robot Framework that is found from the $PATH variable (and that is why it can't find jybot and ipyrebot).
One more thing, it is not safe to run commands with 'root' user, unless they are administrative tasks. Good practice is to have a normal user from the 'users' group, and then run special commands with the
$ sudo <command name>
Bye,
Hélio