mac 升级bash

bash升级前，请勿确认下当前mac's bash version。

[lookback@LookBack-MBP ~]$ /bin/bash --version

GNU bash, version 3.2.57(1)-release (x86_64-apple-darwin17)

Copyright (C) 2007 Free Software Foundation, Inc.

[lookback@LookBack-MBP ~]$

 

# 安装brew

[lookback@LookBack-MBP ~]$ /usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

# 安装bash

[lookback@LookBack-MBP ~]$ brew install bash

#替换bash

[lookback@LookBack-MBP ~]$ sudo mv /bin/bash /bin/bash.origin

[lookback@LookBack-MBP ~]$ sudo ln -s /usr/local/opt/bash/bin/bash /bin/bash

# 由于本mac版本下的sh并不是直接链接bash，而是bash的一个文件拷贝。因此，还要替换默认的sh指向的命令为bash，如下：

[lookback@LookBack-MBP ~]$ sudo mv /bin/sh /bin/sh.origin

[lookback@LookBack-MBP ~]$ sudo ln -s /usr/local/opt/bash/bin/bash /bin/sh

 

2. 验证 通过bash和sh命令查看版本：

[lookback@LookBack-MBP ~]$ bash --version

GNU bash，版本 4.4.23(1)-release (x86_64-apple-darwin17.5.0)

Copyright (C) 2016 Free Software Foundation, Inc.

许可证 GPLv3+: GNU GPL 许可证第三版或者更新版本 <http://gnu.org/licenses/gpl.html>