lp device /dev/null on 11i

[John Flanagan]

I can't set the printer device to /dev/null on HP-UX 11.11. This worked on 10.20.

Have I configured my system incorrectly or has there been a change?

Regards,

John.

[Cheryl Griffin]

What is the error or problem?

Check that /dev/null has the correct major/minor number, permissions, owner, group:
# ll /dev/null
crw-rw-rw- 1 bin bin 3 0x000002 Mar 5 01:11 /dev/null

Cheryl

[Steve Steel]

Hi

It works on my 11i

printer with non standard device file.

How do you do it


steve Steel

[John Flanagan]

Hi,

Cheryl, /dev/null is correct.

Seve, I use the same method to add the printer.

This is the error I get from sam :-
Lp destination "visbsh3" does not exist on ptihp2.

The printer is still created but won't accept requests. When I try to tell it to accept requests I get the following entries in the log file:-
FIFO: Mar 5 12:20 n

Regards,

John.

[Steve Steel]

Hi


Use lpadmin -xprinter

to remove it and then try again to make it.

Steve Steel

[Cheryl Griffin]

Sounds like a permissions, owner, group problem. If it is lpadmin might fail also. Replace printer with your printer name.
chmod 644 /etc/lp/member/printer
chown lp:lp /etc/lp/member/printer
chmod 755 /var/spool/lp/request/printer
chown lp:lp /var/spool/lp/request/printer
chmod 755 /etc/lp/interface/printer
chown lp:bin /etc/lp/interface/printer

[Bill Hassell]

Make sure that /dev/null looks like this:

crw-rw-rw- 1 bin bin 3 0x000002 Mar 5 07:57 /dev/null

Someone logged in as root may have accidently removed this device file and then run a script or program that wrote to it. This action would create a standard file rather than the required device file (and will begin to occupy a lot of space in /dev).

[John Flanagan]

Hi,

I have checked the permisions and then removed and added the printer but this makes no difference.

The errors are still the same.

John.

[Steve Steel]

Hi

lpshut

lpsched -v

try printing

then
disable printer
reject printer
accept printer
enable printer

print again

Post the contents of /var/adm/lp/log and the output of lpadmin -t

Steve Steel

[Steve Steel]

Hi

of course lpstat -t


I have still no problems so it could be permissions.


Run the added script

steve Steel

[Steve Steel]

Hi

of course lpstat -t


I have still no problems so it could be permissions.


Run the added script

steve Steel

[John Flanagan]

output of log using lpsched -v

John.

***** LP LOG: Mar 5 14:13 *****
FIFO: Mar 5 14:13 d email
FIFO: Mar 5 14:14 e email
FIFO: Mar 5 14:14 r email 7 root ptihp2 0
email-7 root email Mar 5 14:14
CHILD: Mar 5 14:14 email 7 0000
FIFO: Mar 5 14:14 m email -1
FIFO: Mar 5 14:14 r email 8 fngj ptihp2 0
email-8 fngj email Mar 5 14:14
CHILD: Mar 5 14:14 email 8 0000
FIFO: Mar 5 14:14 m email -1
FIFO: Mar 5 14:15 n

[Steve Steel]

Hi

Looks perfect to me.

What do you expect it to do


steve steel

[John Flanagan]

Hi Steve,

I found 2 differences on file permisions and I changed them to match your script.

/var was 555 now 755 and

/var/spool was 555 now 755
owner was bin now root
group was bin now sys

This did not make any difference.

I should point out that this is a clean install and no users have had access to the system yet.

also

The accept command works from the command line but does not work from SAM.

Regards,

John.

[John Flanagan]

Hi,

What do I expect?

Main use is:- our ERP system sets up 4 batch queues in a class called VISBSH and uses this to execute offline jobs (not more that 4 at a time).

My second use is:- Using print queue email users can set a job to run and print and receive the output in their e-mail when it completes.

John.