NAME¶
lpq —
spool queue examination
program
SYNOPSIS¶
lpq |
[-al]
[-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.
The options are as follows:
- -a
- Report on the local queues for all printers, rather than
just the specified printer.
- -l
- Information about each of the files comprising the job
entry is printed. Normally, only as much information as will fit on one
line is displayed.
- -Pprinter
- Specify a particular printer, otherwise the default line
printer is used (or the value of the
PRINTER
variable in the environment). 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. 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 indicated 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.
ENVIRONMENT¶
If the following environment variable exists, it is used by
lpq:
PRINTER
- Specifies an alternate default printer.
FILES¶
- /etc/printcap
- To determine printer characteristics.
- /var/spool/*
- The spooling directory, as determined from printcap.
- /var/spool/output/*/cf*
- Control files specifying jobs.
- /var/spool/output/*/lock
- The lock file to obtain the currently active job.
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.
SEE ALSO¶
lpr(1),
lprm(1),
lpc(8),
lpd(8)
HISTORY¶
lpq appeared in
3BSD.
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 result in widely spaced
columns.