如下情况，还请大家帮忙看看怎样恢复？？？

Question

将原先的bash_profile中的PATH环境变量中的$PATH删除了，然后执行source ~/.bash_profile之后就出现了错误，每次打开Terminal都显示：-bash: grep: command not found-bash: grep: command not foundenv: bash: No such file or directoryenv: bash: No such file or directoryenv: bash: No such file or directoryenv: bash: No such file or directoryenv: bash: No such file or directory-bash: grep: command not found-bash: cat: command not found-bash: grep: command not found-bash: grep: command not found-bash: grep: command not found-bash: grep: command not found所有的命令都不能正常执行了，类似：top、ifconfig都会显示：-bash: top: command not found

Answer 1

确定你的编辑器的目录位置，比如为/usr/bin/vim，　然后输入命令时用全路径： /usr/bin/vim ~/.bash_profile 打开上面的文件后，至少加上

PATH=/bin:/sbin/ 
export PATH

估计这样就可以恢复原来的样子了

Answer 2

1. 打开Terminal

2. 重置$PATH
   $ export PATH=/bin:/usr/bin:/usr/local/bin

3. 修复$PATH