第二节 部署贸易币合约
（1）不同于代币，贸易币合约提供了储蓄，提款、借贷、收款等接口，可以和esio.token合约对比，esio.token只是提供了创建代币、发行代币和转账几个接口
void createx( account_name creator,
asset initial_supply,
uint32_t fee,
extended_asset base_deposit,
extended_asset quote_deposit
);
void deposit( account_name from, extended_asset quantity );
void withdraw( account_name from, extended_asset quantity );
void lend( account_name lender, symbol_type market, extended_asset quantity );
void unlend(
account_name lender,
symbol_type market,
double interest_shares,
extended_symbol interest_symbol
);
（2）创建一个贸易币账户
cleos create account eosio exchange EOS6MRyAjQq8ud7hVNYcfnVPJqcVpscN5So8BhtHuGYqET5GDW5CV
（3）部署贸易币合约
ubuntu@ubuntu:~/coding/eos/build/programs/cleos$ cleos set contract exchange ../../contracts/exchange -p exchange
Reading WAST/WASM from ../../contracts/exchange/exchange.wasm...
Using already assembled WASM...
Publishing contract...
executed transaction: 6785f85e6102fc086ff271676215ffab2d8191d1168879c6388fff3b2ed59f62 25480 bytes 3488 us
# eosio <= eosio::setcode {"account":"exchange","vmtype":0,"vmversion":0,"code":"0061736d0100000001a1022b60067f7e7f7f7f7f00600...
# eosio <= eosio::setabi {"account":"exchange","abi":"0e656f73696f3a3a6162692f312e30010c6163636f756e745f6e616d65046e616d650e0...
warning: transaction executed locally, but may not be confirmed by the network yet
第三节 部署Eosio.msig合约
（1）这个合约主要用于多重签名。它提供了多个参与方异步签名的接口。查看源码其大致接口如下：
void propose(); //提议
void approve( account_name proposer, name proposal_name, permission_level level ); //批准
void unapprove( account_name proposer, name proposal_name, permission_level level ); // 拒绝
void cancel( account_name proposer, name proposal_name, account_name canceler ); // 取消
void exec( account_name proposer, name proposal_name, account_name executer ); //执行
（2）创建账户
cleos create account eosio eosio.msig EOS6MRyAjQq8ud7hVNYcfnVPJqcVpscN5So8BhtHuGYqET5GDW5CV EOS6MRyAjQq8ud7hVNYcfnVPJqcVpscN5So8BhtHuGYqET5GDW5CV
（3）部署合约
cleos set contract eosio.msig build/contracts/eosio.msig -p eosio.msig