软件

浏览器

https://www.microsoft.com/zh-cn/edge

升级

git 升级

  1. # 查看版本
  2. git --version
  3. # 升级 Git
  4. brew install git
  5. # 重新链接 git
  6. brew link git --overwrite
  7. # 查看版本
  8. git --version

配置修改

修改网络设置

  1. # 列出本机所有网络服务
  2. networksetup -listallnetworkservices
  3. # 设置Wi-Fi静态IP和指定DNS
  4. networksetup -setmanual "Wi-Fi" 10.0.1.37 255.255.255.0 10.0.1.1
  5. networksetup -setdnsservers "Wi-Fi" 223.5.5.5 114.114.114.114
  6. # 设置Wi-Fi自动获取IP和DNS
  7. networksetup -setdhcp "Wi-Fi"
  8. networksetup -setdnsservers Wi-Fi empty

修改 ulimit

  1. launchctl limit
  2. -----------------
  3.     cpu         unlimited      unlimited
  4.     filesize    unlimited      unlimited
  5.     data        unlimited      unlimited
  6.     stack       8388608        67104768
  7.     core        0              unlimited
  8.     rss         unlimited      unlimited
  9.     memlock     unlimited      unlimited
  10.     maxproc     5568           8352
  11.     maxfiles    256            unlimited
  12. ------------------
  13. echo "limit maxfiles 65535 unlimited" | sudo tee -a /etc/launchd.conf
  14. # 记得重启哈
  16. Linux发行版redhat/centos配置与osx不同,如下:
  17. vim /etc/security/limits.conf
  18. # noproc进程数,nofile文件打开数
  19. # soft软限制, 在程序的进程中可自行改变.
  20. # hard硬限制, 程序不可随意改变,除非有root权限.
  21. * soft noproc 11000
  22. * hard noproc 11000
  23. * soft nofile 4100
  24. * hard nofile 4100
  28. 创建新的配置文件，配置系统打开最多文件限制（如果没有的话）
  30. sudo vim /Library/LaunchDaemons/limit.maxfiles.plist
  31. 内容如下：
  32. <?xml version="1.0" encoding="UTF-8"?>
  33. <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
  34.   <plist version="1.0">
  35.     <dict>
  36.       <key>Label</key>
  37.         <string>limit.maxfiles</string>
  38.       <key>ProgramArguments</key>
  39.         <array>
  40.           <string>launchctl</string>
  41.           <string>limit</string>
  42.           <string>maxfiles</string>
  43.           <string>655360</string>
  44.           <string>655360</string>
  45.         </array>
  46.       <key>RunAtLoad</key>
  47.         <true/>
  48.       <key>ServiceIPC</key>
  49.         <false/>
  50.     </dict>
  51.   </plist>
  53. .创建每个最大进程数限制的配置文件
  55. sudo vi /Library/LaunchDaemons/limit.maxproc.plist
  56. 内容如下：
  57. <?xml version="1.0" encoding="UTF-8"?>
  58. <!DOCTYPE plist PUBLIC "-//Apple/DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
  59.   <plist version="1.0">
  60.     <dict>
  61.       <key>Label</key>
  62.         <string>limit.maxproc</string>
  63.       <key>ProgramArguments</key>
  64.         <array>
  65.           <string>launchctl</string>
  66.           <string>limit</string>
  67.           <string>maxproc</string>
  68.           <string>2048</string>
  69.           <string>2048</string>
  70.         </array>
  71.       <key>RunAtLoad</key>
  72.         <true />
  73.       <key>ServiceIPC</key>
  74.         <false />
  75.     </dict>
  76.   </plist>
  78. chown root:wheel /Library/LaunchDaemons/limit.maxproc.plist
  79. chown root:wheel /Library/LaunchDaemons/limit.maxproc.plist
  82. # 打开端口后限制  vim /etc/sysctl.conf
  83. net.inet.ip.portrange.first=1024
  84. net.inet.ip.portrange.last=65535

mac实现不对电池充电

把MagSafe接口5芯中间的那个断开，就可以实现使用电源供电，但是不对电池进行充电。只适合MagSafe接口的老机型，不适合最新的USB-C机型。

打开hosts权限

sudo /bin/chmod +a ‘user:’${LOGNAME}’:allow write’ /etc/hosts

配置系统打开最多文件限制

  1. sudo vi /Library/LaunchDaemons/limit.maxfiles.plist
  3. <?xml version="1.0" encoding="UTF-8"?>
  4. <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
  5.   <plist version="1.0">
  6.     <dict>
  7.       <key>Label</key>
  8.         <string>limit.maxfiles</string>
  9.       <key>ProgramArguments</key>
  10.         <array>
  11.           <string>launchctl</string>
  12.           <string>limit</string>
  13.           <string>maxfiles</string>
  14.           <string>655360</string>
  15.           <string>655360</string>
  16.         </array>
  17.       <key>RunAtLoad</key>
  18.         <true/>
  19.       <key>ServiceIPC</key>
  20.         <false/>
  21.     </dict>
  22.   </plist>
  24.  chown root:wheel /Library/LaunchDaemons/limit.maxfiles.plist
  25.  launchctl limit
  26.  再重启保证生效

每个最大进程数限制的配置文件

  1. sudo vi /Library/LaunchDaemons/limit.maxproc.plist
  3. <?xml version="1.0" encoding="UTF-8"?>
  4. <!DOCTYPE plist PUBLIC "-//Apple/DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
  5.   <plist version="1.0">
  6.     <dict>
  7.       <key>Label</key>
  8.         <string>limit.maxproc</string>
  9.       <key>ProgramArguments</key>
  10.         <array>
  11.           <string>launchctl</string>
  12.           <string>limit</string>
  13.           <string>maxproc</string>
  14.           <string>3096</string>
  15.           <string>3096</string>
  16.         </array>
  17.       <key>RunAtLoad</key>
  18.         <true />
  19.       <key>ServiceIPC</key>
  20.         <false />
  21.     </dict>
  22.   </plist>
  25. chown root:wheel /Library/LaunchDaemons/limit.maxproc.plist
  26. launchctl limit
  27. 再重启保证生效

端口限制

  1. sudo vi /etc/sysctl.conf
  2. net.inet.ip.portrange.first=1024
  3. net.inet.ip.portrange.last=65535

CPU信息查看

  1. #查看所有信息
  2. sysctl machdep.cpu
  4. #显示CPU型号
  5. sysctl -n machdep.cpu.brand_string
  7. #显示CPU核心数（物理核）
  8. sysctl -n machdep.cpu.core_count
  10. #显示线程数（逻辑核）
  11. sysctl -n machdep.cpu.thread_count

并发测试问题

mac: max user processes最大值只能是2128,处于安全考虑，8G内存最大值为2500，16g最大值可以设置5000.

xcrun: error，missing xcrun

xcode-select --install

socket: Too many open files

$ sudo sysctl -w kern.maxfiles=1048600
$ sudo sysctl -w kern.maxfilesperproc=1048576

出现read: connection reset by peer

sysctl -a |grep somaxconn
sudo sysctl -w kern.ipc.somaxconn=2048
sysctl -w net.inet.ip.portrange.first=32768 # 增大客户端可以建立的连接数
launchctl limit maxfiles 99999 99999
ulimit -n 99999

Mac 解决brew一直卡在Updating Homebrew

# 直接关闭brew每次执行命令时的自动更新（推荐）
vim ~/.bash_profile
# 新增一行
export HOMEBREW_NO_AUTO_UPDATE=true

替换brew源

cd "$(brew --repo)"
git remote set-url origin https://mirrors.ustc.edu.cn/brew.git

#替换homebrew-core.git
cd "$(brew --repo)/Library/Taps/homebrew/homebrew-core"
git remote set-url origin https://mirrors.ustc.edu.cn/homebrew-core.git
brew update


# 备用地址-1
cd "$(brew --repo)"
git remote set-url origin https://git.coding.net/homebrew/homebrew.git
brew update


# 备用地址-2
cd "$(brew --repo)"
git remote set-url origin https://mirrors.tuna.tsinghua.edu.cn/git/brew.git
cd "$(brew --repo)/Library/Taps/homebrew/homebrew-core"
git remote set-url origin https://mirrors.tuna.tsinghua.edu.cn/git/homebrew-core.git
brew update

#--------------------------------

#重置brew.git
cd "$(brew --repo)"
git remote set-url origin https://github.com/Homebrew/brew.git

#重置homebrew-core.git
cd "$(brew --repo)/Library/Taps/homebrew/homebrew-core"
git remote set-url origin https://github.com/Homebrew/homebrew-core.git