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Full Discussion: Creating Printing Program in bash
Top Forums Shell Programming and Scripting Creating Printing Program in bash Post 302606071 by Corona688 on Friday 9th of March 2012 01:19:57 PM
Old 03-09-2012
Any printer which understands postscript or PCL can also understand raw text so perhaps, at its very simplest, you could do:

Code:
sed 's/$/\r/n' >/dev/usblp0

When run in a terminal, sed will read from the keyboard, convert \n into \r\n, and print it back out into /dev/usblp0.

When you're finished typing, hit control-D to tell sed the document is finished and to quit. You may not see any printing happen until you do, unless you have an old-fashioned tractor feed printer. Even for those, you won't see any printing until you finish a line with enter...
 

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LEARN ABOUT OSX

disable

enable(1)                                                          User Commands                                                         enable(1)

NAME

       enable, disable - enable/disable LP printers

SYNOPSIS

       /usr/bin/enable printer...

       /usr/bin/disable [-c | -W]  [ -r [reason]] printer...

DESCRIPTION

       The  enable  command  activates  printers,  enabling  them to print requests submitted by the lp command. enable must be run on the printer
       server.

       The disable command deactivates printers, disabling them from printing requests submitted by the lp command. By default, any requests  that
       are  currently  printing  on printer will be reprinted in their entirety either on printer or another member of the same class of printers.
       The disable command must be run on the print server.

       Use lpstat -p to check the status of printers.

       enable and disable only effect queueing on the print server's spooling system. Executing these commands from a client system will  have  no
       effect on the server.

OPTIONS

       The following options are supported for use with disable:

       -c              Cancels  any requests that are currently printing on printer. This option cannot be used with the -W option. If the printer
                       is remote, the -c option will be silently ignored.

       -W              Waits until the request currently being printed is finished before disabling printer. This option cannot be used  with  the
                       -c option. If the printer is remote, the -W option will be silently ignored.

       -r [reason]     Assigns  a  reason  for  the  disabling  of  the  printer(s). This reason applies to all printers specified. This reason is
                       reported by lpstat -p. Enclose reason in quotes if it contains blanks. The default  reason  is  "unknown  reason"  for  the
                       existing printer, and "new printer" for a printer added to the system but not yet enabled.

OPERANDS

       The following operand is supported for both enable and disable:

       printer         The  name of the printer to be enabled or disabled. Specify printer using atomic name. See printers.conf(4) for information
                       regarding the naming conventions for atomic names.

EXIT STATUS

       The following exit values are returned:

       0               Successful completion.

       non-zero        An error occurred.

FILES

       /var/spool/lp/*         LP print queue.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE         |      ATTRIBUTE VALUE        |
       +-----------------------------+-----------------------------+
       |Availability                 |SUNWpcu                      |
       +-----------------------------+-----------------------------+
       |CSI                          |enabled                      |
       +-----------------------------+-----------------------------+

SEE ALSO

       lp(1), lpstat(1), printers.conf(4), attributes(5)

SunOS 5.10                                                          9 Sep 1996                                                           enable(1)
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