LXer: Linux File Ownership
 

Published at LXer:

You can change the owner and group of a file or a directory with the chown command. Please, keep in mind you can do this only if you are the root user or the owner of the file.

Set the file's owner:
$ chown username somefile
After giving this command, the new owner of a file called somefile will be the user username. The file's group owner will not change. Instead of a user name, you can also give the user's numeric ID here if you want.

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