08-22-2008
Catching print jobs.
Hi,
I am wondering how to catch print jobs to process them before been served to the printer.
I was told that the challenge is to catch raw text that an old legacy application sends to the printer (invoices, quotes, etc) and save them as text files to allow a new application to process them doing diferent new stuff that the old app can not.
We need to try this approach because there are no people that can change the legacy app's code. The client is thinking on change the app but we need to offer a solution now.
Does anybody konws how to do that?
Thanks in advance.
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LEARN ABOUT DEBIAN
lldptool-app
lldptool(8) Linux lldptool(8)
NAME
APP - Show / manipulate APP TLV configuration
SYNOPSIS
lldptool -t -i ethx -V APP [-c app]
lldptool -T -i ethx -V APP [-d] app=prio,sel,pid
DESCRIPTION
The APP TLV is an informational TLV and will advertise the current configured application table. If the peer APP TLV and a local APP TLV
match the same selector and protocol field the local parameter is used.
ARGUMENTS
app Configures a local application data field using the three parameters priority (prio), selector (sel), and protocol (pid). The -d
option can be provided to remove an entry which matches the three parameters.
Theory of Operations
The APP TLV is an informational TLV for most end stations it is not expected that setting APP data should be required. Peer data will be
processed and added to the application data table by default assuming there does not already exist a local entry with matching selector and
priority fields.
By adding APP data to the application table it is available for applications, eg iscsid, to query. Applications query for a specific proto-
col and selector and may use this data to map traffic to the corresponding traffic class.
EXAMPLE & USAGE
Configure ISCSI application for priority 4 on eth2
lldptool -T -i eth2 -V APP app=4,2,3260
Configure FCoE application for priority 3 on eth2
lldptool -T -i eth2 -V APP app=3,1,35078
Remove FCoE application for priority 3 on eth2
lldptool -T -i eth2 -V APP -d app=3,1,35078
Display locally configured application table on eth2
lldptool -t -i eth2 -V APP -c app
Display last transmitted APP TLV on eth2
lldptool -t -i eth2 -V APP
SOURCE
o IEEE 802.1Qaz (http://www.ieee802.org/1/pages/dcbridges.html)
NOTES
Currently changing the default priority is not supported by default it is set to zero.
SEE ALSO
lldptool(8), lldpad(8)
AUTHOR
John Fastabend
open-lldp February 2010 lldptool(8)