1- That code only works from within the script, if you run it individually the variable will not be recognized

2- Input for compiling xmr-stak is X (uppercase x) not x

3- I dont have much experience with xmr-stak to help with. You may ask in their from for the parameters and add them to:

Or let us know if it needs some adjustments in 0miner.

4- There is already a miner password in 1bash what other passwords you are looking for?