How can I change the default permissions for a device?

Updated -

Release found: Red Hat Enterprise Linux 4

In Red Hat Enterprise Linux 4, the /dev directory is created dynamically by udev. If a change is made to a device /dev/mixer, the changes will be lost after a reboot. To make the settings permanent, edit the /etc/udev/permissions.d/50-udev.permissions file. Any changes to a dev...

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