Best Practice for file ownership and permissions?

I frequently encounter problems due to file ownership and permissions for the system files in /usr, /bin, /sbin/ /etc, and so forth. For example, when I type su Administrator cygwin responds /usr/bin/su: /bin/bash: Permission denied I know enough to have done mkpasswd -l

Re: Best Practice for file ownership and permissions?

I frequently encounter problems due to file ownership and permissions for the system files in /usr, /bin, /sbin/ /etc, and so forth. For example, when I type su Administrator cygwin responds /usr/bin/su: /bin/bash: Permission denied Not quite the answer to your original