yarn安装

[livingbody@localhost myapp]$ sudo cnpm install -g yarn
Downloading yarn to /usr/local/node-v10.13.0-linux-x64/lib/node_modules/yarn_tmp
Copying /usr/local/node-v10.13.0-linux-x64/lib/node_modules/yarn_tmp/_yarn@1.12.3@yarn to /usr/local/node-v10.13.0-linux-x64/lib/node_modules/yarn
Installing yarn's dependencies to /usr/local/node-v10.13.0-linux-x64/lib/node_modules/yarn/node_modules
All packages installed (used 3ms(network 2ms), speed 0B/s, json 0(0B), tarball 0B)
[yarn@1.12.3] link /usr/local/node-v10.13.0-linux-x64/bin/yarn@ -> /usr/local/node-v10.13.0-linux-x64/lib/node_modules/yarn/bin/yarn.js
[yarn@1.12.3] link /usr/local/node-v10.13.0-linux-x64/bin/yarnpkg@ -> /usr/local/node-v10.13.0-linux-x64/lib/node_modules/yarn/bin/yarn.js