Mac一些常用操作

MAC查找JDK的路徑

在控制檯中輸入

/usr/libexec/java_home -V

即可以看見

Matching Java Virtual Machines (2):
9.0.4, x86_64:  "Java SE 9.0.4" /Library/Java/JavaVirtualMachines/jdk-9.0.4.jdk/Contents/Home
1.8.0_91, x86_64:   "Java SE 8" /Library/Java/JavaVirtualMachines/jdk1.8.0_91.jdk/Contents/Home

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Mac中顯示文件夾的大小

一、在Finder中查看文件夾大小：

1、Cmd+A選中當前目錄下所有文件

2、在右鍵菜單中選擇“顯示選項”或者按Cmd+J快捷鍵

3、選擇“計算所有大小”的複選框

然後文件夾的大小就會顯示出來了。

二、在Terminal中查看當前目錄下所有文件（包含文件夾）大小：

du -hs *

或者：

du -shc *

第二個命令能在最後顯示一個Total大小，即當前目錄的總大小。

git

Bash completion has been installed to:
/usr/local/etc/bash_completion.d

zsh completions and functions have been installed to:
/usr/local/share/zsh/site-functions

Emacs Lisp files have been installed to:
/usr/local/share/emacs/site-lisp/git

Your identification has been saved in /Users/damon/.ssh/id_rsa.
Your public key has been saved in /Users/damon/.ssh/id_rsa.pub.