Gene Heskett wrote:
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Kevin J. Cummings
kjchome@xxxxxxx
cummings@xxxxxxxxxxxxxxxxxx
cummings@xxxxxxxxxxxxxxxxxxxxxxx
Registered Linux User #1232 (http://counter.li.org)
On Monday 12 May 2008, Mikkel L. Ellertson wrote:
Gene Heskett wrote:
But, this command line, which outputs to the screen very nicely if the
pipe and the rest of the line are removed, seems to send the data to
/dev/null:
#>cat /dev/ttyUSB1 | lpr -Plp1
Try something like:
cat /dev/ttyUSB1 | lpr -Plp1 -
or
cat /dev/ttyUSB1 | lpr -Plp1 -- -
Either of those give this:
[root@coyote ~]# cat /dev/ttyUSB1 | lpr -Plp1 -
lpr: Error - unknown option '
^C
[root@coyote ~]# cat /dev/ttyUSB1 | lpr -Plp1 -- -
lpr: Error - unknown option '-'!
Thanks.
From the lp man page:
lp submits files for printing or alters a pending job. Use a
filename of "-" to force printing from the standard input.
From the lpr man page:
lpr submits files for printing. Files named on the command line are sent to the named printer (or the system default destination if no
destination is specified). If no files are listed on the command-line, lpr reads the print file from the standard input.
So:
cat /dev/ttyUSB1 | lpr -Plp1
should be all that's needed....
Mikkel
--
Kevin J. Cummings
kjchome@xxxxxxx
cummings@xxxxxxxxxxxxxxxxxx
cummings@xxxxxxxxxxxxxxxxxxxxxxx
Registered Linux User #1232 (http://counter.li.org)
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