cd的奇特用法

1、cd -

解释：返回上一个目录

Changing to the Previous Directory

Adding a dash symbol (-) to the cd command returns the shell to the previous working directory.

For instance, after moving from Downloads to Example_Directory, return to Downloads with: cd -

2、cd ~[username]

解释：更改其他用户的主目录

Changing to Another User's Home Directory

Change to another user's Home directory by adding the tilde symbol (~) appended with the appropriate username.

For instance, changing to the Home directory of a user named alex:cd ~alex