How to express relative path in linux

For example, if your current path is /var/log, and now you want to enter the /usr directory, you can execute the following command:

cd ../../usr   #通过相对路径先退到/var目录下，再退到/下，最后进如/usr下

(Recommended tutorial: linux tutorial)
The equivalent path is relative to the current directory.

../        #表示上级目录
./        #表示当前目录下
./XXX    #表示当前目录下的XXX文件或者XXX目录

Using relative paths does not necessarily require returning to the directory.

If the current path is /var/log, you want to go to /var/run/

cd ../run   #先退到/var目录，然后进入/var目录下的run目录

Recommended related video tutorials: linux video tutorial

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