# Command-line options ``` pzec 0.1.0 Parity Technologies Parity Zcash client USAGE: pzec [FLAGS] [OPTIONS] [SUBCOMMAND] FLAGS: -h, --help Prints help information --no-jsonrpc Disable the JSON-RPC API server. -q, --quiet Do not show any synchronization information in the console. --regtest Use a private network for regression tests. --testnet Use the test network (Testnet3). -V, --version Prints version information OPTIONS: --blocknotify Execute COMMAND when the best block changes (%s in COMMAND is replaced by the block hash). -c, --connect Connect only to the specified node. -d, --data-dir Specify the database and configuration directory PATH. --db-cache Sets the database cache size. --jsonrpc-apis Specify the APIs available through the JSONRPC interface. APIS is a comma-delimited list of API names. --jsonrpc-cors Specify CORS header for JSON-RPC API responses. --jsonrpc-hosts List of allowed Host header values. --jsonrpc-interface The hostname portion of the JSONRPC API server. --jsonrpc-port Specify the PORT for the JSONRPC API server. --only-net Only connect to nodes in network version (ipv4 or ipv6). --port Listen for connections on PORT. -s, --seednode Connect to a seed-node to retrieve peer addresses, and disconnect. --verification-edge Non-default verification-level is applied until a block with given hash is met. --verification-level Sets the Blocks verification level to full (default), header (scripts are not verified), or none (no verification at all). SUBCOMMANDS: help Prints this message or the help of the given subcommand(s) import Import blocks from a Bitcoin Core database. rollback Rollback the database to given canonical-chain block. ```