如何将python路径重置为/usr/bin/python？

Question

我按照某些说明安装了一个包，最终安装了另一个版本的 python 并创建了符号链接（我不记得名字了）。现在，当我从终端点击 python 时，它指向/usr/local/python2.7/bin/python2.7. 我需要将默认 python 重置为/usr/bin/python. 怎么做？

$ which python
/usr/bin/python
$ whereis python
python: /usr/bin/python2.7-config /usr/bin/python2.7 /usr/bin/python /etc/python2.7 /etc/python /usr/lib/python2.7 /usr/bin/X11/python2.7-config /usr/bin/X11/python2.7 /usr/bin/X11/python /usr/local/bin/python2.7 /usr/local/lib/python2.7 /usr/include/python2.7 /usr/share/python /usr/share/man/man1/python.1.gz
$ 
$ python
bash: /usr/local/python2.7/bin/python2.7: No such file or directory
$ 
$ /usr/bin/python
Python 2.7.3 (default, Dec 18 2014, 19:10:20) 
[GCC 4.6.3] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> 

Answer 1

$ sudo rm /usr/bin/python
$ sudo ln -s /usr/bin/python2.7 /usr/bin/python