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owner group

When I ssh into my server and login as t root user and I'm getting the following error on screen:

Could not chdir to home directory /root: No such file or directory

How do I fix this error under CentOS or Debian Linux server?
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UNIX / Linux Find File Owner Name

Q. How do I find out the name of file / directory owner under UNIX / Linux operating systems?
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Can you provide more information about chmod command octal mode number notation?
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How To Use chmod and chown Command

How do I use chmod and chown command under Linux / Unix operating systems?
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