4.14. Moving Jobs From Queue to Queue and Redirecting Queues

The lpc move command is used to move jobs in one queue to another queue on an individual basis, while the lpc redirect command redirects all incoming jobs to a new queue. Edit the printcap file so it has contents indicated below, use checkpc -f to check the printcap, and then use lpc reread to restart the lpd server.

lp:force_localhost
lp:server
  :sd=/var/spool/lpd/%P
  :lp=lp2@localhost
lp2:force_localhost
lp2:server
  :sd=/var/spool/lpd/%P
  :lp=/tmp/lp2
Execute the following commands to print the /tmp/hi file and observe the results:
h4: {238} % lpc stop lp lp2
Printer: lp@h4
lp@h4.private: stopped
Printer: lp2@h4
lp2@h4.private: stopped
h4: {239} % lpr /tmp/hi
h4: {240} % lpq -a
Printer: lp@h4  (printing disabled)
 Queue: 1 printable job
 Server: no server active
 Rank   Owner/ID           Class Job Files      Size Time
1      papowell@h4+659       A   659 /tmp/hi       3 08:04:03
Printer: lp2@h4  (printing disabled)
 Queue: no printable jobs in queue
h4: {241} % lpc move lp papowell lp2
Printer: lp@h4
lp: selected 'papowell@h4+659'
lp@h4.private: move done
h4: {242} % lpq -a
Printer: lp@h4  (printing disabled)
 Queue: no printable jobs in queue
 Status: job 'papowell@h4+659' removed at 08:19:24.962
Printer: lp2@h4  (printing disabled)
 Queue: 1 printable job
 Server: no server active
 Rank   Owner/ID           Class Job Files       Size Time
1      papowell@h4+659       A   659 /tmp/hi        3 08:19:24


We first stop the queues so that the jobs will remain in them. We then use the lpc move fromqueue id toqueue command to select a job in the fromqueue and move it to the toqueue. A list of job numbers, job IDs, or glob patterns to match job IDs can be used to select the job.

The lpc redirect fromqueue toqueue will cause all incoming jobs to be redirected to the specified queue. You can execute the following commands and observe the results.

h4: {243} % lpc redirect lp lp2
Printer: lp@h4
forwarding to 'lp2'
lp@h4.private: redirected
h4: {244} % lpq -a
Printer: lp@h4  (printing disabled) (redirect lp2)
 Queue: no printable jobs in queue
Printer: lp2@h4  (printing disabled)
 Queue: no printable jobs in queue
h4: {245} % lpr /tmp/hi
h4: {246} % lpq -a
Printer: lp@h4  (printing disabled) (redirect lp2)
 Queue: no printable jobs in queue
 Status: job 'papowell@h4+935' removed at 09:08:21.410
Printer: lp2@h4  (printing disabled)
 Queue: 1 printable job
 Server: no server active
 Rank   Owner/ID           Class Job Files        Size Time
1      papowell@h4+935       A   935 /tmp/hi         3 09:08:21


To turn redirection off, use lpc redirect queue off as shown in the example below:

h4: {247} % lpc redirect lp off
Printer: lp@h4
forwarding off
h4: {248} % lpq
Printer: lp@h4  (printing disabled)
 Queue: no printable jobs in queue
 Status: job 'papowell@h4+935' removed at 09:08:21.410