Duane Clark wrote: > I have one of those USB serial port adapters, but whenever I reboot, I > find that I need to, as root, change the permissions on /dev/ttyUSB0 > before I can run minicom. I tried adding a command to do this to > /etc/rc.d/rc.local, but this sometimes seems to work and sometimes > (mostly) not. > > Is there some standard way to set the permissions on the device file > when it is dynamically created? > There are a couple of ways to handle this. One way is to add the user to the uucp group. A second way is to add a udev rule that sets the permission, and preferably a symlink for the adapter. Then have minicom configured to use the symlink instead of the name. You can also configure a console.perms rule to change the permissions so that the user logged into the console has access. For USB devices, I like to combine a udev rule with a console.perms rule that works on the symlink. But I have more then one device that looks like a USB serial port to the system, and they do not always get plugged in in the same order. It should also be possible to write a HAL rule to manage this device, but I have not played with that yet. Mikkel -- Do not meddle in the affairs of dragons, for thou art crunchy and taste good with Ketchup!
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