I'm hoping someone can help me out here.
I'm having a problem on my Red Hat Enterprise 5 Server where my tty devices "tty[a-d][1-16]" are being set to read only permissions.
I need them to be set to 777 in order to write to the serial printers through a custome application.
I have gone through many article and man pages on how to do this but have had no luck.
from root I can manually chmod the permissions on the devices.
So I attempted to write a script to chmod the devices and place it in the /etc/rc.local file. - This did not work
I created a 51-default.perms file in the console.perms.d directory with the elevated permissions (I have done this with ttyS0 and it has worked reliably)
I have created a 10-udev.rules file and a 99-udev.rules file with the elevated permissions and this did not work.
I have been in touch with red hat support and have had no luck there either.
Has anyone had a similar issue and can you suggest a resolution.
Thanks.