Is there a good command line Bitcoin cash wallet for linux available?
You can use Bitcoin-ABC or Bitcoin-unlimited, Both are Bitcoin-cash.
after you successsfully install it, you can just send the commands as follows:
bitcoin-cli getnewaddress "account"
to get new bitcoin cash address.
You can find all commands on bitcoin.org. This documention for Bitcoin core, but as Bitcoin cash is a fork of bitcoin, these commands should work with you. You can find new commands or changes on Bitcoin-ABC on Github