Which Linix are you using, is it 32 or 64 bit? Also, did you recently upgrade your Linux? Did the CLI work before then stop working, or did it not work when installed? You need to give more details.
Be advised that the Ex12350 is long past EOL. The Stex driver is part of the Lunix kernel, but the GUI and CLI are not.
In another thread where the user had upgraded to Fedora 26, the installer would not work, I traced the missing libraries and installed those, then the installer would work, but the GUI still would not load. So resolving the libprerrlog.so issue may or may not give you a working CLI.
The Ex12350 software was not designed or compiled for the newer kernals. It was written for a v2.6 Kernel, and it's unlikely to work with a v4.x kernel.
There are two workarounds that I can see, manage from the BIOS, not ideal as you need to reboot but it's there.
The other workaround is to partition your disk to dual boot, and build the other partition with a compatible OS such as Fedora Core 5, probably any Fedora with a 2.6 Kernel should work. The Fedora Core 5 kernel is 2.6.18.