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lpq(1) [bsd man page]

LPQ(1)							      General Commands Manual							    LPQ(1)

NAME
lpq - spool queue examination program SYNOPSIS
lpq [ +[ n ] ] [ -l ] [ -Pprinter ] [ job # ... ] [ user ... ] DESCRIPTION
lpq examines the spooling area used by lpd(8) for printing files on the line printer, and reports the status of the specified jobs or all jobs associated with a user. lpq invoked without any arguments reports on any jobs currently in the queue. A -P flag may be used to spec- ify a particular printer, otherwise the default line printer is used (or the value of the PRINTER variable in the environment). If a + argument is supplied, lpq displays the spool queue until it empties. Supplying a number immediately after the + sign indicates that lpq should sleep n seconds in between scans of the queue. All other arguments supplied are interpreted as user names or job numbers to filter out only those jobs of interest. For each job submitted (i.e. invocation of lpr(1)) lpq reports the user's name, current rank in the queue, the names of files comprising the job, the job identifier (a number which may be supplied to lprm(1) for removing a specific job), and the total size in bytes. The -l option causes information about each of the files comprising the job to be printed. Normally, only as much information as will fit on one line is displayed. Job ordering is dependent on the algorithm used to scan the spooling directory and is supposed to be FIFO (First in First Out). File names comprising a job may be unavailable (when lpr(1) is used as a sink in a pipeline) in which case the file is indi- cated as ``(standard input)". If lpq warns that there is no daemon present (i.e. due to some malfunction), the lpc(8) command can be used to restart the printer daemon. FILES
/etc/termcap for manipulating the screen for repeated display /etc/printcap to determine printer characteristics /usr/spool/* the spooling directory, as determined from printcap /usr/spool/*/cf* control files specifying jobs /usr/spool/*/lock the lock file to obtain the currently active job SEE ALSO
lpr(1), lprm(1), lpc(8), lpd(8) BUGS
Due to the dynamic nature of the information in the spooling directory lpq may report unreliably. Output formatting is sensitive to the line length of the terminal; this can results in widely spaced columns. DIAGNOSTICS
Unable to open various files. The lock file being malformed. Garbage files when there is no daemon active, but files in the spooling directory. 4.2 Berkeley Distribution June 5, 1986 LPQ(1)

Check Out this Related Man Page

LPRM(1) 						    BSD General Commands Manual 						   LPRM(1)

NAME
lprm -- remove jobs from the line printer spooling queue SYNOPSIS
lprm [-Pprinter] [-] [job # ...] [user ...] DESCRIPTION
The lprm utility will remove a job, or jobs, from a printer's spool queue. Since the spooling directory is protected from users, using lprm is normally the only method by which a user may remove a job. The owner of a job is determined by the user's login name and host name on the machine where the lpr(1) command was invoked. Options and arguments: -Pprinter Specify the queue associated with a specific printer (otherwise the default printer is used). - If a single '-' is given, lprm will remove all jobs which a user owns. If the super-user employs this flag, the spool queue will be emptied entirely. user Cause lprm to attempt to remove any jobs queued belonging to that user (or users). This form of invoking lprm is useful only to the super-user. job # A user may dequeue an individual job by specifying its job number. This number may be obtained from the lpq(1) program, e.g. % lpq -l 1st:ken [job #013ucbarpa] (standard input) 100 bytes % lprm 13 If neither arguments or options are given, lprm will delete the currently active job if it is owned by the user who invoked lprm. The lprm utility announces the names of any files it removes and is silent if there are no jobs in the queue which match the request list. The lprm utility will kill off an active daemon, if necessary, before removing any spooling files. If a daemon is killed, a new one is auto- matically restarted upon completion of file removals. ENVIRONMENT
If the following environment variable exists, it is utilized by lprm. PRINTER If the environment variable PRINTER exists, and a printer has not been specified with the -P option, the default printer is assumed from PRINTER. FILES
/etc/printcap Printer characteristics file. /var/spool/* Spooling directories. /var/spool/*/lock Lock file used to obtain the pid of the current daemon and the job number of the currently active job. DIAGNOSTICS
``Permission denied" if the user tries to remove files other than his own. SEE ALSO
lpq(1), lpr(1), lpd(8) HISTORY
The lprm command appeared in 3.0BSD. BUGS
Since there are race conditions possible in the update of the lock file, the currently active job may be incorrectly identified. BSD
June 6, 1993 BSD
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