安装完grunt，grunt命令没有报错也没其他 啥都没有 怎么破

tongchuan@tongchuan-K42Jv:~$ sudo npm install -g grunt-cli

/usr/bin/grunt -> /usr/lib/node_modules/grunt-cli/bin/grunt

grunt-cli@0.1.13 /usr/lib/node_modules/grunt-cli

├── resolve@0.3.1

├── nopt@1.0.10 (abbrev@1.0.7)

└── findup-sync@0.1.3 (lodash@2.4.2, glob@3.2.11)

tongchuan@tongchuan-K42Jv:~$ grunt

tongchuan@tongchuan-K42Jv:~$ nodejs -v

v0.10.37

tongchuan@tongchuan-K42Jv:~$ npm -v

1.4.28

tongchuan@tongchuan-K42Jv:~$ grunt -v

tongchuan@tongchuan-K42Jv:~$ grunt-cli

grunt-cli：未找到命令

tongchuan@tongchuan-K42Jv:~$ grunt

tongchuan@tongchuan-K42Jv:~$ npm root -g

/usr/lib/node_modules

tongchuan@tongchuan-K42Jv:~$ grunt

tongchuan@tongchuan-K42Jv:~$ grunt -v

tongchuan@tongchuan-K42Jv:~$ gunt