# Linux/macOS
npm config set registry https://registry.yarnpkg.com

# Windows
npm config set registry "https://registry.yarnpkg.com"

Gauge

• 定义： Gauge 是一个时间序列度量标准，其值可以随着时间的推移而增加或减少。
• 特点：
  • Gauge 的值可以为正、负或零。
  • Gauge 的值可以随时间变化。
  • Gauge 的值可以被应用程序主动设置。
• 使用场景：
  • 跟踪应用程序消耗的内存量。
  • 跟踪应用程序的并发连接数。
  • 跟踪应用程序的请求数量。

How to fix this: premature EOF errors in crontab file, can't install

1. Check for Missing Newline Characters:

   Make sure each line in your crontab file ends with a newline character. The absence of a newline character can cause premature EOF errors.

2. Check for Spaces at the End of Lines:

   Trailing spaces at the end of lines can also cause premature EOF errors. Ensure that there are no extra spaces after the command or arguments on each line.

3. Fix Incorrect Syntax:

   Carefully review the syntax of your crontab entries. Double-check the format and ensure that all fields (minute, hour, day, month, weekday, and command) are present and in the correct order.

Kubernetes Secret 资源对象使用方法：

新注册：BFCMTLD23
续费：BFCMTR23

Here are some PostgreSQL commands that are similar to \dt, which is used to list all the tables in the current database:

Once a time, I edit a file with vim and save, but a lot of ^M characters was inserted.

To remove ^M characters with vim, I found this solution:

接上一篇 docker 容器安全与 firewalld；为了正常使用docker容器和firewalld，而不修改docker的daemon.json，按如下步骤个性firewalld规则，其本质上是修改ptables规则，修改完成后可以用iptables -nL 查看。

只需结束这个进程就可以：

ps -ef|grep com.apple.quicklook.ThumbnailsAgent 
再kill -9 xxx

之前试过的killall Dock 做多大作用。

Both Parse Server and Realm are popular choices for developing mobile apps. However, the choice between the two depends on your specific requirements and development needs.