GNU/Linux man pages
Livre :
Expressions régulières,
Syntaxe et mise en oeuvre :
GNU/Linux |
CentOS 2.1AS(Slurm) |
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lpq(1) |
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lpq − spool queue examination program
lpq [
−a ] [ −A ] [ −l ] [
−L ] [ −P printer ] [
−s ]
[ -t sleeptime ] [ −V ] [
−D debugopt ]
[ jobid... ]
lpq requests a status report from lpd(8) on the specified printers or jobs. lpq invoked without any arguments reports on the printer given by the default printer (see −P option). The short (default) format simply lists the printer, host, and numbers of jobs in the spool queue. When using the long format (-l option), for each job in a spool queue lpq reports the job identifier which is generated from the user’s name and originating host, current rank in the queue, the job number (which may be supplied to lprm(1) for removing a specific job), the job description information, and the total size in bytes. If there is an error or other problem with the job, this information may be modified to reflect the problems. In a spool queue, Job ordering is a modified FIFO (First in First Out), modified by the job class and priority information.
The following options are available.
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-A |
Use authentication specified by the value of the AUTH environment variable. |
-Ddebugoptions
Debugging is controlled using the −D option. This accepts a comma-separated list of debugging settings. These settings take one of two forms: facility=value , or value to set an overall default value.
−P printer
By default, the destination printer is taken from the command line printer value, then the environment variables PRINTER, LPDEST, NPRINTER, NGPRINTER, then first entry in the printcap information, and and finally the default_printer entry from the configuration file, and then the compile time default. Note that the special printer all has the same affect as the −a option.
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−V |
Print version information. | ||
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−a |
All printers listed in the printcap(5) database are reported. This list is generated by the server, and may differ from what the user printcap information contains. | ||
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−l |
Increase verbosity of the long display format. A single -l options selects a short verbose display, multiple -l options increase the verbosity. | ||
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−L |
Use maximum verbosity for the long display format. | ||
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-s |
Display a short, single line status summary for each queue and subqueue. |
-tsleeptime
Forces lpq to periodically display the spool queues and then sleep sleeptime seconds between scans of the queue.
jobid ... all
The options are followed by a list of jobids which are used to select jobs of interest. A jobid can be a user name, a job identifier, a job number, or a glob based pattern which will be applied to the job identifiers. The all keyword will display all jobs and is the default option.
The lpq will report the status of the spool queue (enabled for spooling, disabled for unspooling), and the absence of a server if unspooling is enabled. The lpc(1) command lpc start <printer> may be used to start the server if this is the case.
By default, the destination printer is taken from the command line dest value, then the environment variables PRINTER, LPDEST, NPRINTER, NGPRINTER, then first entry in the printcap information, and and finally the default_printer entry from the configuration file, and then the compile time default.
The following exit values are returned:
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zero (0) |
Successful completion. |
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non-zero (!=0) |
An error occurred. |
The printer names and other information is obtained by using a printcap file or some other database. The ${HOME}/.printcap file can be used to specify user level options and configuration information. See printcap(5) for more information.
The files used
by LPRng are set by values in the printer configuration
file. The following are a commonly used set of default
values.
/etc/lpd.conf LPRng configuration file
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${HOME}/.printcap |
user printer description file | |
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/etc/printcap |
system printer description file | |
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/etc/lpd.perms |
printer permissions | |
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/var/spool/printer* |
spool directories | |
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/var/spool/printer*/printer |
lock file for queue control | |
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/var/spool/printer*/control.printer |
queue control | |
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/var/spool/printer*/active.printer |
active job | |
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/var/spool/printer*/log.printer |
log file |
lpd.conf(5), lpc(8), lpd(8), checkpc(8), lpr(1), lprm(1), printcap(5), lpd.perms(5), pr(1).
Most of the
diagnostics are self explanatory.
If you are puzzled over the exact cause of failure,
set the debugging level on (-D5) and run again.
The debugging information will
help you to pinpoint the exact cause of failure.
LPRng is a enhanced printer spooler system with functionality similar to the Berkeley LPR software. The LPRng mailing list is lprng@lprng.com; subscribe by sending mail to lprng-request@lprng.com with the word subscribe in the body. The software is available from ftp://ftp.astart.com/pub/LPRng.
Patrick Powell <papowell@lprng.com>.
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lpq(1) | |