摘要：// 利用reduce同步处理promise const p = function(num) { return new Promise((resolve, reject) => { setTimeout(() => { resolve(num) }, 2000) }) }; // list: [1, 阅读全文

摘要：vi .bashrc alias ll那一行的#去掉 然后执行 source .bashrc 阅读全文

摘要：apt update apt upgrade apt clean apt autoclean apt autoremove 阅读全文