centos view the number of files in the folder

When not viewing hidden files

ll | wc -l

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When hidden files are included,

It cannot be used directly ls -al |wc -lbecause executing the ls -al command will not only display all files, but also the current folder and parent folder,

so ls -al|wc -lyou will get the following results.

This is inaccurate because I did not hide the files. The results should be the ll |wc -lsame.

So, we have to subtract 2 from the final result. You can use the following command

 expr $(ls -al|wc -l) - 2

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