laserbar.1

这是一个同样来自贝尔实验室的和UNIX有着渊源的操作系统, 其简洁的设计和实现易于我们学习和理解

.TH LASERBAR 1
.SH NAME
laserbar \- produce bar codes on a PostScript laser printer
.SH SYNOPSIS
.B laserbar
[\fB-r\fP rotate] [\fB-x\fP xoffset] [\fB-y\fP yoffset]
[\fB-X\fP xscale] [\fB-Y\fP yscale] [\fB-lns\fP] string
.SH DESCRIPTION
.I Laserbar
prints on the standard output the PostScript text that will produce
(on a suitable laser printer) the \s-2CODE-39\s+2 bar code
corresponding to
.I string.
The \fBr\fP option may be used to specify a rotation (in
degrees) of the bar code.
The \fBx\fP, \fBy\fP, \fBX\fP, and \fBY\fP options may be used to specify
an x- or y-axis offset (in inches) or scaling factor, respectively.
(The offset is measured from the lower left corner of the page
to the upper left corner of the bar
code.  By default, the bar code produced is one inch high, and is scaled
so that the narrowest elements are each 1/72-inch \- i.e., one point \- wide.)
If the \fBl\fP option is specified, the bar code produced is labeled.
If the \fBn\fP option is specified, the resulting PostScript text
includes a leading \f(CWnewpath\fP command, so that the text may stand
alone or precede any other PostScript commands.
If the \fBs\fP option is specified, the resulting PostScript text includes 
a trailing \f(CWshowpage\fP command, so that the text may stand alone
or follow any other PostScript commands.
.P
This manual page (if it appears with a bar code printed on it) was
produced by something like the following sequence:
.IP
.ft CW
laserbar -x 2.5 -y 3 -l -n ABC123xyz > tempfile
.br
troff -man -Tpost laserbar.1 | dpost >> tempfile
.br
prt -dprinter -lpostscript tempfile
.ft P
.SH SEE ALSO
laserbar(3), prt(1), dpost(1), postbgi(1), postprint(1), postdmd(1), posttek(1), etc.