xf.8

<B>Digital的Unix操作系统VAX 4.2源码</B>

.TH xf 8
.SH Name
xf \- transparent filter
.SH Syntax
/usr/lib/lpdfilters/xf
.SH Description
The 
.PN xf
filter is a transparent filter. The filter simply concatenates data 
directly to the printer. The 
.PN xf
filter may be used with any printer.
This filter allows device specific escape characters
and control sequences to reach the printer.
.PP
There are no command line arguments passed to the 
.PN xf
filter by 
.PN lpd
and the filter does not maintain any accounting information.
.PP
The 
.PN xf
filter should be specified in the 
.B xf
field of the 
.PN /etc/printcap
file.  For further information, see 
.MS printcap 5 .
It is invoked when the \fB\-x\fP option is used with the
.MS lpr 1
command to print a job. Prior to its invocation the filter specified in
the \fBof\fP field is invoked to print the banner
page upon completion it is stopped
and the 
.PN xf
filter sends the job to the printer.
.SH Files
.PN /etc/printcap
.br
.PN /dev/lp?
.SH See Also
lpr(1), pr(1), printcap(5), lpd(8), MAKEDEV(8), pac(8)
.br
``Line Printer Spooler Manual,''
.I "ULTRIX Supplementary Documents, Volume 2: Programmer"