mac常见问题

mac出现无法上网的问题

电脑总盘符(/)-资源库-Preferences文件夹-SystemConfiguration文件夹-只保留文件com.apple.smb.server.plist/com.apple.Boot.plist

MYSQL 命令行操作

启动mysql

$ sudo /usr/local/mysql/support-files/mysql.server start

停止mysql

$ sudo /usr/local/mysql/support-files/mysql.server stop

重启mysql

$ sudo /usr/local/mysql/support-files/mysql.server restart

Brew 更新慢的问题

 ~ $ cd "$(brew --repo)"
/usr/local/Homebrew $ git remote set-url origin https://mirrors.ustc.edu.cn/brew.git
/usr/local/Homebrew $ cd "$(brew --repo)/Library/Taps/homebrew/homebrew-core"
/usr/local/Homebrew/Library/Taps/homebrew/homebrew-core $ git remote set-url origin https://mirrors.ustc.edu.cn/homebrew-core.git
/usr/local/Homebrew/Library/Taps/homebrew/homebrew-core $ brew update
Updated 1 tap (homebrew/core)

Brew安装软件

安装telnet

$ brew install telnet

安装iproute

$ brew install iproute2mac
$ ip a

MacOS 命令

lsof macos自带命令, 不需要通过brew安装

$ lsof -i:3306   # 列出谁在使用3306端口
COMMAND    PID USER   FD   TYPE             DEVICE SIZE/OFF NODE NAME
Navicat   1102  cjw   10u  IPv4 0xdb4b36948523ba7b      0t0  TCP localhost:49570->localhost:mysql (ESTABLISHED)

$ lsof -i  # 列出所有网络链接
$ lsof -i tcp  # 列出所有tcp网络连接
$ lsof -i udp  # 列出所有udp网络连接
$  lsof  -i |  grep  -i ESTABLISHED  #找出已建立的连接
$  lsof  -i |  grep  -i LISTEN  # 找出监听端口