ll see the meaning of each field

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As shown below

Each column represents the meaning of the following

The first column: - indicates the file; D represents a folder; L represents a soft connection
of the second column: the current user permissions, group permissions user, another user to
the third column: frequency of use is
the fourth column: the current user, the current user group
of five: file size, you can use K or M as a unit (ll -h)
sixth column: created
seventh column: file or directory name