If the user is logged in, and we try to change from /home/james to
/home/james/ we'll get the error:
usermod: user james is currently used by process ????
and furthermore, it makes no sense to try and make this change since the
usermod function won't do anything if you run:
usermod --gid james --groups wheel --home /home/james/ james
when /etc/passwd has /home/james as the string.
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