"/" is the root directory, "~" is the home directory.
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Linux storage is mounted, which is equivalent to a tree shape. The source is "/", which is the root directory . Each user has a "home" directory, which is the user's personal directory. For example, the "home" directory of the root user is /root, and the home directory of ordinary user a is /home/a
After the user is created, we can see it in the /home directory, which is the user's "home" directory created by the system by default.
/home/a is the home directory after switching to user a”~”
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