//1.删除原gem源 gem sources --remove https://rubygems.org/ //2.添加国内镜像 gem source -a https://gems.ruby-china.com //3.打印是否替换成功 gem sources -l //4.更换成功后打印如下 *** CURRENT SOURCES *** https://gems.ruby-china.com sudo gem install sass Building native extensions…

错误信息 执行命令: sudo gem install sass时遇到下面的错误信息 Building native extensions. This could take a while... ERROR: Error installing sass: ERROR: Failed to build gem native extension. current directory: /var/lib/gems/2.5.0/gems/ffi-1.11.1/ext/ffi_c /usr/bin/rub…

ruby新手,总是会出现这样那样的问题,这里先记录下,希望能解决你得问题. 首先是安装ruby 环境,楼主愚钝,在公司和自己的电脑上来来回回整了好几天,每次安装 gem 包的时候总是报错,错误信息大致为"Failed to build gem native extension".搜索后大致都是说没有安装ruby-dev,可我明明安装的是rubyinstaller-devkit 版本,所有的勾选全部都选中,在ruby初始化界面设置里 3个步骤都执行了,在运行gem包安装的时候还是会那个报…

Hadoop on Ubuntu 14.04 In this chapter, we'll install a single-node Hadoop cluster backed by the Hadoop Distributed File System on Ubuntu. Installing Java Hadoop framework is written in Java!! k@laptop:~$ cd ~ # Update the source list k@laptop:~$ sud…

from : http://www.howtoforge.com/installing-nginx-with-php5-and-php-fpm-and-mysql-support-lemp-on-ubuntu-12.04-lts 1 Preliminary Note In this tutorial I use the hostname server1.example.com with the IP address 192.168.0.100. These settings might diff…

React-Native 开发的项目,Android 方面没有任何问题,IOS 就是无法跑起来,报错信息如下: mac 10.14.4 xcode 10.2.1 error Failed to build iOS project. We ran "xcodebuild" command but it exited with error code 65. To debug build logs further, consider building your app with Xcode.…

Error msg: Installation has failed: There was an error while installing the application. Check the setup log for more information and contact the author Open setup Log: -- ::> Program: Starting Squirrel Updater: --install . -- ::> Program: Starting…

docker服务起不来.报error:getNetworkFromStore for nid failed while trying to build sandbox for cleanup: network 解决方法:备份/var/lib/docker/network/files/local-kv.db,再删除local-kv.db旧的配置文件,重启启动docker daemon服务…

Entrypoint undefined = index.html html-webpack-plugin 错误 ERROR in Error: Child compilation failed: Module build failed (from ./node_modules/html-webpack-plu SyntaxError: Unexpected token ) Child html-webpack-plugin for "index.html": 1 asset Entr…

psutil是一个特别好用来检查系统资源的一个包, 但是 在Mac安装却总是报错 查看监控系统脚本, 点这里 mac系统版本: Macos Mojave 10.14.3 报错信息如下: WARNING: The directory '/Users/msw/Library/Caches/pip/http' or its parent directory is not owned by the current user and the cache has been disabled. Please…