Primary EVA CLI tools are eva (./bin/eva) and eva-shell (./bin/eva -I or ./bin/eva-shell). Actually it’s a same program, which automatically starts itself in interactive mode (-I) when called as eva-shell and without any argument.
Interactive mode
If command “uc”, “lm” or “sfa” is called without arguments, EVA shell will launch corresponding controller sub-shell, which’s equal to calling uc-cmd, lm-cmd and sfa-cmd directly.
You can execute a pack of several commands at once, separating them with “;” symbol, just like in a system shell:
state -p sensor ; state -p unit
The next very useful trick is command repeating. In real life, there’s a lot of examples, when you mount / setup some equipment and need to check its state every second to get the moment it start working correctly. To repeat the command
in EVA shell , symbol “|” (pipe) is used
