daanen
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Creating an Account with some root permissions
Hi there,
I'm using linux to communicate with external devices by serial or parallel ports. However, I must be root or set root permissions to my prog for accessing to these io ports. What I would like is to create an account which has root permissions for io ports but not for the rest such as accessing in Write mode to system files or accessing to /root directory.
How could I do this ?
I'm using linux to communicate with external devices by serial or parallel ports. However, I must be root or set root permissions to my prog for accessing to these io ports. What I would like is to create an account which has root permissions for io ports but not for the rest such as accessing in Write mode to system files or accessing to /root directory.
How could I do this ?
All you have to do is change ownership and permission for the /dev/{whatever port} to the user. What you might want to do is set up a group which have permission to access the ports and put those users who need access in that group.
alternatively, you can use 'sudo' program to explicitly grant certain user/group to run a single program/a set of programs as root.
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Thanks for these answers. As I'm the unique user of my linux box, I just chmod 666 /dev/ttyS*. But in the future, I'll probably use Reinier's solution