Paul - try this: Open up a terminal mkdir a play space: $mkdir ~/testdir go there: $cd ~/testdir create a file: $touch test Look at it: $ls -l test -rw------- 1 david users 0 Mar 1 13:45 test play with chmod: $chmod 110 test and see what it does: $ls -l test ---x--x--- 1 david users 0 Mar 1 13:45 test try other values: $ chmod 421 test and see what they do: $ ls -l test -r---w---x 1 david users 0 Mar 1 13:45 test keep playing around till you understand how the number relate to permissions. On Sat, Mar 1, 2014 at 1:41 PM, paul g <pj.world at hotmail.com> wrote: > Very Very solid advice if I do say so myself. This is a bit over my head > but I will try to figure it out. Thanks for all your help. > > ------------------------------ > Date: Sat, 1 Mar 2014 13:20:27 -0600 > > From: david.wagle at gmail.com > To: tclug-list at mn-linux.org > Subject: Re: [tclug-list] A question about printing' > > I should add -- unless you have reason to do so, don't change the group > ownership. Rather, limit the permissions to that group. > > > On Sat, Mar 1, 2014 at 1:09 PM, David Wagle <david.wagle at gmail.com> wrote: > > OK -- so understanding the numbers on modes: > > There are three sets of permissions, those for the OWNER, the GROUP and > WORLD. > > Each permission set is controlled by a bit string that is 4 bits long. > > If the first bit is a 1, then that group has read permissions. > > A bit string (base 2) of 0001 has a decimal value of 1 because 0x2^3 + > 0x2^2 + 0x2^1 + 1x2^0 = 1 and corresponds to execute permission > > A bit string (base 2) of 0010 has a decimal value of 2 because 0x2^3 + > 0x2^2 + 1x2^1 + 0x2^0 = 2 and corresponds to write permission > > A bit string (base 2) of 0100 has a decimal value of 4 because 0x2^3 + > 1x2^2 + 0x2^1 + 0x2^0 = 4 and corresponds to read permission > > The fourth bit is used for special permissions like "the sticky bit" and > is really beyond the basics. > > Now, because the values of 1, 2 and 4 are bit-independent, any combination > of those values is the equivilant of 'OR'ing the bit strings. > > So, if we want read and write permission we want both 4 and 2. That is we > want the bit mask to be 011. Which is 0x2^3 + 1x2^2 + 1x2^1 + 0x2^0 = 6. > Which is what you get if you add 4 + 2. > > So a mask of, say 751 is RWX for Owner, R+X for Group and R for World. > > As for which link to follow --- without your box in front of me to > troubleshoot, I really can't say "here's what to do." > > However, I'd start with setting your library to minimal permission since > what you're getting is a permissions error. That would be at least as > strict as 660. > > I would also then check that your users are in the same group as your > print service -- which is usually 'wheel,' but not always. > > > On Sat, Mar 1, 2014 at 12:35 PM, paul g <pj.world at hotmail.com> wrote: > > David thanks for the great link and advice. > > I will reset world with command? 'chown root:root brfaxfilter' > > I will then 'chmod go+x' > > ???? > > Can you please recommend which area of the link you sent I should possibly > follow? > > There are chmod 555 and 700 's etc making me confused. > > I will restart 'cups' using the command 'sudo service cups restart' > > Thanks alot for your help with this. > > ------------------------------ > Date: Sat, 1 Mar 2014 00:11:02 -0600 > > From: david.wagle at gmail.com > To: tclug-list at mn-linux.org > Subject: Re: [tclug-list] A question about printing' > > Looks like you're not the only one to run into this: > > http://ubuntuforums.org/archive/index.php/t-1368410.html > > > On Sat, Mar 1, 2014 at 12:06 AM, David Wagle <david.wagle at gmail.com>wrote: > > Also - you probably have to restart CUPS to have it re-read the library. > > > On Sat, Mar 1, 2014 at 12:03 AM, David Wagle <david.wagle at gmail.com>wrote: > > Paul - again, there's no reason for world permissions to be anything. > Anyone authorized to use the service should be in the same group as the > service. > > > On Fri, Feb 28, 2014 at 7:36 PM, paul g <pj.world at hotmail.com> wrote: > > Again I am sorry to repost BUT the following should be noted: > > I am using a majic jack based telephone line system 'VOIP', > > I have adjusted the MFC-295CN to 9600 baud rate 'fax', > > I do of course have a high speed ethernet connection, > > Your help is always appreciated. > > Thank you for your time, > > Paul G > > > ------------------------------ > From: pj.world at hotmail.com > To: tclug-list at mn-linux.org > Date: Fri, 28 Feb 2014 19:16:31 -0600 > > Subject: Re: [tclug-list] A question about printing' > > I just preformed a 'chmod' command and permissions NOW look like this for > the file: > > located under: deb at deb-desktop /usr/lib/cups/filter $ > > -rwxrw-rw- 1 root deb 5.2K Nov 24 2005 brfaxfilter > > command I entered was: > > sudo chmod go-x brfaxfilter > > to remove execute. > > rebooted the machine same thing still shows up in Cups. > > ------------------------------ > Date: Fri, 28 Feb 2014 17:58:10 -0600 > From: david.wagle at gmail.com > To: tclug-list at mn-linux.org > Subject: Re: [tclug-list] A question about printing' > > ls -l of /usr/lib/cups/filter/brfaxfilter > > Looks like you have a sticky bit set and have it 'rwx' for all. It really > only probably needs to be 'rw-' for owner and group, and then any user who > is allowed to use it should be in that group. There should be no need for > a sticky bit to be set. > > > > On Fri, Feb 28, 2014 at 5:51 PM, paul g <pj.world at hotmail.com> wrote: > > I have successfully installed the 'CUPS' and the appropriate drivers for a > model 'MFC-295CN' Brother printer. > > The machine is running kernel: Linux deb-desktop 3.2.0-59-generic > #90-Ubuntu SMP Tue Jan 7 22:47:22 UTC 2014 i686 i686 i386 GNU/Linux > > > I can print documents properly as well as scan them using xsane. Test page > printout work great! also 'full color'. > > My issue is with the accompanied 'BRFAX' which I have installed also uses > 'Cups' is as follows: > > When I click on 'BRFAX' inside 'Cups' > Reports an error: > > The error is as follows: 'shown in Cups' > > Stopped - File "/usr/lib/cups/filter/brfaxfilter" has insecure permissions > (0100777/uid=0/gid=0). > > deb at deb-desktop /usr/lib/cups/filter $ ls -lah > -rwxrwxrwx 1 root root 5.2K Nov 24 2005 brfaxfilter > > dpkg -l | grep Brother > > ii brmfcfaxcups > 1.0.0-2 Brother MFC/FAX fax share function > driver > ii brmfcfaxlpd > 1.0.0-2 Brother MFC-FAX LPD driver > ii brother-udev-rule-type1 > 1.0.0-1 Brother udev rule type 1 > ii brscan-skey > 0.2.4-1 Brother Linux scanner S-KEY tool > ii brscan3 > 0.2.11-4 Brother Scanner Driver > ii mfc295cncupswrapper > 1.1.3-1 Brother CUPS Inkjet Printer > Definitions > ii mfc295cnlpr > 1.1.3-1 Brother lpr Inkjet Printer > Definitions > ii printer-driver-ptouch > 1.3-3ubuntu0.1 printer driver Brother P-touch > label printers > > Any ideas on where to go from here? > > Thank You, > > Paul G > > > > > > _______________________________________________ > TCLUG Mailing List - Minneapolis/St. Paul, Minnesota > tclug-list at mn-linux.org > http://mailman.mn-linux.org/mailman/listinfo/tclug-list > > > > _______________________________________________ TCLUG Mailing List - > Minneapolis/St. Paul, Minnesota tclug-list at mn-linux.org > http://mailman.mn-linux.org/mailman/listinfo/tclug-list > > _______________________________________________ TCLUG Mailing List - > Minneapolis/St. Paul, Minnesota tclug-list at mn-linux.org > http://mailman.mn-linux.org/mailman/listinfo/tclug-list > > _______________________________________________ > TCLUG Mailing List - Minneapolis/St. Paul, Minnesota > tclug-list at mn-linux.org > http://mailman.mn-linux.org/mailman/listinfo/tclug-list > > > > > > _______________________________________________ TCLUG Mailing List - > Minneapolis/St. Paul, Minnesota tclug-list at mn-linux.org > http://mailman.mn-linux.org/mailman/listinfo/tclug-list > > _______________________________________________ > TCLUG Mailing List - Minneapolis/St. Paul, Minnesota > tclug-list at mn-linux.org > http://mailman.mn-linux.org/mailman/listinfo/tclug-list > > > > > _______________________________________________ TCLUG Mailing List - > Minneapolis/St. Paul, Minnesota tclug-list at mn-linux.org > http://mailman.mn-linux.org/mailman/listinfo/tclug-list > > _______________________________________________ > TCLUG Mailing List - Minneapolis/St. Paul, Minnesota > tclug-list at mn-linux.org > http://mailman.mn-linux.org/mailman/listinfo/tclug-list > > -------------- next part -------------- An HTML attachment was scrubbed... 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