It looks like you may have your Input field Command set to Formula. Try using Content on the Value and just enter your commands:
mkdir sampleFile ; mv toWork.zip /test ; unzip /test/toWork.zip
mkdir sampleFile || mv toWork.zip /test || unzip /test/toWork.zip
I would recommend using the double-pipe which will only run the following command if the preceding command was successful.
You can put all the commands in a script file and use it in the command to execute.
This will also serve the requirement.
You can put any echo statements to understand the failures (in future) or pass any values dynamically in the script.