Brendan Minish wrote:
On Sat, 2008-06-14 at 11:14 +0100, David Woolley (E.L) wrote:
Brendan, this was way too simple! I found that I had to execute k3util
as root, otherwise it wouldn't open the ttyUSB0 port.
I cannot think of any good reason why this would be necessary, and as a
matter of policy one should reject software that shouldn't need to run
as root, but does actually need to. I think it is more likely that the
ttyUSB0 device node needs its permissions changing or accommodating to.
On Centos / RHEL /Fedora
Adding your user to the uucp group will give you access to the serial
ports.
to give your normal user access to the serial ports do the following as
root
usermod -a -G uucp <username>
you can also do this with the GUI tool
system-config-users
this adds your normal user to the uucp group and gives your user access
to the serial ports so that you can run com port applications as a user
instead of root
you may need to log your user out and back in again for this to take
effect.
PS Note that Centos is a derivative, not a variant of Red Hat; Red Hat
would deny any responsibility for it.
Having recently completed some redhat training this is true, however the
redhat people work pretty closely with centos these days and Centos is
not seen as a rival.
Centos is based on the redhat Enterprise linux source code tree that
Redhat publish under the terms of the GPL.
Centos aims to be binary compatible with Redhat Enterprise linux
Red Hat commercialise open source
software by branding it and then charging for the use of the brand and
for support.
Redhat operate within the parameters of the GPL licence and contribute a
lot of paid for development resources to the linux codebase.
They sell a commercially supported product, it is the support, the
compiled binaries, Indemnity from litigation (SCO, MS etc) and branding
that you are buying, not 'linux'
CentOs remove the Red Hat branding and bypasses the
support contract that encumbers commercially supplied copies of Red Hat
Linux.
This is Something that the Centos people are perfectly entitled to do
under the terms of the GPL. You are are also able if you so wish to
download the entire RHEL source tree and rebuild your own binary
compatible version
73
Brendan EI6IZ
RHCE 85008029731335
I love this list! I got pertinent lessons on the use of unix groups and
the English language. Thanks John, Brendan and David.
Now, as others are wont to say: "Let's end this thread", since I am now
on the proper path.
Thanks again to all.
ttfn &
--
73,
Dick ka1oz
Middleborough, MA
K3/100(Kit) SN 000859
Titan-DX
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