Mac一些常用操作

MAC查找JDK的路径

在控制台中输入

/usr/libexec/java_home -V

即可以看见

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中显示文件夹的大小

一、在Finder中查看文件夹大小：

1、Cmd+A选中当前目录下所有文件

2、在右键菜单中选择“显示选项”或者按Cmd+J快捷键

3、选择“计算所有大小”的复选框

然后文件夹的大小就会显示出来了。

二、在Terminal中查看当前目录下所有文件（包含文件夹）大小：

du -hs *

或者：

du -shc *

第二个命令能在最后显示一个Total大小，即当前目录的总大小。

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.