VMWare tools 下载

https://packages.vmware.com/tools/releases/

xcode ios模拟器镜像离线下载

详见
https://stackoverflow.com/questions/29058229/download-xcode-simulator-directly

npm使用国内镜像安装Electron

shell:

ELECTRON_MIRROR=https://npmmirror.com/mirrors/electron/ npm install --registry=https://registry.npmmirror.com -g electron

如仍然无法运行，cd到node_modules/electron/，执行

ELECTRON_MIRROR=https://npmmirror.com/mirrors/electron/ node install.js

Windows cmd:

set ELECTRON_MIRROR=https://npmmirror.com/mirrors/electron/
npm install --registry=https://registry.npmmirror.com -g electron

如仍然无法运行，cd到node_modules/electron/，执行

set ELECTRON_MIRROR=https://npmmirror.com/mirrors/electron/
node install.js

Chrome for enterprise

https://chromeenterprise.google/browser/download/

禁止在Windows锁屏界面显示浏览器中的播放状态控制按钮

Chrome:
– 进入chrome://flags/
– 查找Hardware Media Key Handling
– 设为Disabled

Firefox:
– 进入about:config
– 查找media.hardwaremediakeys.enabled
– 设为false

CentOS 7无法为nginx自动续期Let’s Encript证书的解决办法

使用crontab来自动为nginx续期证书，但一直失败，命令为：

certbot --nginx renew

在 /var/log/letsencrypt/ 下的日志文件显示：
Could not find a usable ‘nginx’ binary

可能是在PATH中未找到nginx可执行程序，可以手动指定，最终命令如下：

certbot --nginx --nginx-ctl /usr/sbin/nginx renew

参考资料：
https://community.letsencrypt.org/t/certbot-cron-job-nginx-plugin-noinstallationerror/67572

cmd 变量总结

https://blog.csdn.net/flyoutsan/article/details/52811095

在有CSS transform属性的元素内position fixed定位错误的解释

当容器元素具有CSS transform定义时，会隐式地生成定位容器，transform容器及其子元素都会相对于该隐式容器做transform变换，即便内部元素具有position:fixed也无法逃脱，其行为就好像设置了position:absolute，详见参考资料。

参考资料

https://stackoverflow.com/questions/9115880/css-transform-translate-moves-postionfixed-inner-div

https://meyerweb.com/eric/thoughts/2011/09/12/un-fixing-fixed-elements-with-css-transforms/

解决The MySQL server is running with the –skip-grant-tables option so it cannot execute this statement

set global read_only=0;
flush privileges;

参考资料：
http://www.cnblogs.com/xionghui/archive/2013/03/01/2939342.html

卸载ECS上阿里云盾程序

卸载套路云方法一

wget http://update.aegis.aliyun.com/download/uninstall.sh 
chmod +x uninstall.sh 
./uninstall.sh

卸载套路云方法二

wget http://update.aegis.aliyun.com/download/quartz_uninstall.sh 
chmod +x quartz_uninstall.sh 
./quartz_uninstall.sh

卸载残留

pkill aliyun-service 
rm -fr /etc/init.d/agentwatch /usr/sbin/aliyun-service 
rm -rf /usr/local/aegis*

iptables -I INPUT -s 140.205.201.0/28 -j DROP 
iptables -I INPUT -s 140.205.201.16/29 -j DROP 
iptables -I INPUT -s 140.205.201.32/28 -j DROP 
iptables -I INPUT -s 140.205.225.192/29 -j DROP 
iptables -I INPUT -s 140.205.225.200/30 -j DROP 
iptables -I INPUT -s 140.205.225.184/29 -j DROP 
iptables -I INPUT -s 140.205.225.183/32 -j DROP 
iptables -I INPUT -s 140.205.225.206/32 -j DROP 
iptables -I INPUT -s 140.205.225.205/32 -j DROP 
iptables -I INPUT -s 140.205.225.195/32 -j DROP 
iptables -I INPUT -s 140.205.225.204/32 -j DROP 
屏蔽套路云盾 IP

内容来源：https://www.v2ex.com/t/388454#r_4718005