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Full Discussion: How to kill printer PIDs except the spooler PID?
Top Forums UNIX for Beginners Questions & Answers How to kill printer PIDs except the spooler PID? Post 303024916 by djflu on Friday 19th of October 2018 07:18:11 AM
Old 10-19-2018
How to kill printer PIDs except the spooler PID?
First of all, I'd like to congratulate this big family and all members for all the work you do!
I'm trying to do an script or sentence which kills an specific printers PIDs: all printers PIDs older than 72h running in the server.

Steps:
1.- List all printers PID sorting by date:
Code:
ps -eaf | grep -e "UID" -e "lpsched" | grep -v grep | sort -rk6
   UID   PID  PPID  C    STIME TTY       TIME COMMAND
    lp 22948 11814  0 12:36:58 ?         0:00 /usr/sbin/lpsched
    lp 19332 11814  0 08:45:17 ?         0:00 /usr/sbin/lpsched
    lp 29793 11814  0  Sep 30  ?         0:00 /usr/sbin/lpsched
    lp 11814     1 12  Aug 28  ?        238:08 /usr/sbin/lpsched
    lp 18598 11814  0  Oct 17  ?         0:00 /usr/sbin/lpsched
    lp 26198 11814  0  Oct 16  ?         0:00 /usr/sbin/lpsched
    lp 24981 11814  0  Oct 16  ?         0:00 /usr/sbin/lpsched
    lp 13996 11814  0  Oct 13  ?         0:00 /usr/sbin/lpsched
    lp  5802 11814  0  Oct 12  ?         0:00 /usr/sbin/lpsched
    lp 24510 11814  0  Oct 10  ?         0:00 /usr/sbin/lpsched
    lp  4585 11814  0  Oct  8  ?         0:00 /usr/sbin/lpsched
    lp 26585 11814  0  Oct  7  ?         0:00 /usr/sbin/lpsched
    lp 25739 11814  0  Oct  2  ?         0:00 /usr/sbin/lpsched

2.-Isolate PPID = spooler ID (no killed)
Code:
ps -eaf | grep -e lpsched | grep -v grep | awk '{if ($3>1) print $3}' | tail -n 1
   11814

3.-PIDs to be killed (no kills the spooler PPID "11814"):
Code:
ps -eaf | grep -e lpsched | grep -v grep | awk '{print $2}' | pgrep -e 72:00:00 lpsched
  24510
  4585
  29793
  11814
  26585
  13996
  25739
  11319
  5802

4.- Kill all the PIDs of step 3 except the spooler PPID 11814.
Code:
???

 

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LEARN ABOUT SUNOS

lpsched

lpsched(1M)						  System Administration Commands					       lpsched(1M)

NAME

       lpsched - start the LP print service

SYNOPSIS

       lpsched [-f num_filters] [-n num_notifiers] [-p fd_limit] [-r reserved_fds]

DESCRIPTION

       The  lpsched command  starts or restarts the  LP print service.

       The  lpshut command stops the  LP print service.  Printers that are restarted using lpsched reprint (in their entirety) print requests that
       were stopped by	lpshut. See  lpshut(1M).

       It is recommended that you start  and stop the LP print service using svcadm(1M).  See NOTES.

OPTIONS

       The following options are supported:

       -f num_filters	       Specifies the number of concurrent slow filters that may be run on a print server. A default value of 1 is used	if
			       none  is  specified. Depending on server configuration, a value of  1 may cause printers to remain idle while there
			       are jobs queued to them.

       -n num_notifiers        Specifies the number of concurrent notification processes that can run on a print server. A default value of  1	is
			       used when none is specified.

       -p fd_limit	       Specifies  the file descriptor resource limit for the  lpsched process. A default value of  4096 is used if none is
			       specified. On extremely large and active print servers, it may be necessary to increase this value.

       -r reserved_fds	       Specifies the number of file descriptors that the scheduler reserves for internal communications under heavy  load.
			       A  default  value  of   2  is  used  when none is specified. It should not be necessary to modify this value unless
			       instructed to do so when troubleshooting problems under high load.

EXIT STATUS

       The following exit values are returned:

       0	       Successful completion.

       non-zero        An error occurred.

FILES

       /var/spool/lp/*	       LP print queue.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWpsu			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       lp(1), svcs(1), lpstat(1), lpadmin(1M), lpmove(1M), lpshut(1M), svcadm(1M), attributes(5), smf(5)

       System Administration Guide: Basic Administration

NOTES

       The lpsched service is managed by the service management facility, smf(5), under the service identifier:

       svc:/application/print/server

       Administrative actions on this service, such as enabling, disabling, or requesting restart, can be performed  using  svcadm(1M).  The  ser-
       vice's status can be queried using the svcs(1) command.

SunOS 5.10							    3 Sep 2004							       lpsched(1M)
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