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Full Discussion: How to modify /etc/printcap?
Operating Systems Linux Red Hat How to modify /etc/printcap? Post 302659697 by nick-genisys on Thursday 21st of June 2012 11:21:17 AM
Old 06-21-2012
How to modify /etc/printcap?
I put this on the CentOS forums yesterday and it's been read 80 times, but no response..........I hope I'm not too impatient.

Hello,
I am trying to set up a 3 port HP Jetdirect 300x box. I have done the following:

Added jetdirect to host file with IP address.
Created 3 printers with lpadmin (one for each port).

Now I'm stuck. In SCO UNIX, you can just modify the rm variable in the /etc/printcap file to route print jobs to the hostname, however with CentOS, I cannot change that file because it will be overwritten by cupsd and the /etc/cups/printers.conf file doesn't have the rm variable there. Where can I make this change permanent? I did try lpoptions and it created an lpoptions file in /etc/cups with the variable that I added, I don't know that this is what I want to do, unless it somehow is read at the time a print job is sent I don't think it will work.

I did find that I could shut down cupsd and remove the startup script from /etc/rc5.d, which would then stop /etc/printcap from being overwritten, but this is going to cause problems because cups won't be running and then nothing will print.

Any help would be appreciated, I have checked Red Hat docs, CentOS, Googled, etc and all I can seem to find is how to do this via GUI interface, not command line. I've seen where it clearly says that you "cannot edit /etc/printcap", but not where it says what to edit to change the rm variable.

Thanks,
Nick

---------- Post updated at 10:21 AM ---------- Previous update was at 09:19 AM ----------

Apparently there is no easy way to modify /etc/printcap to change the rm variable.

An associate of mine found something on an old forum that might work for the Jet Direct 300x...............the first printer on the box will be port 9100 and subsequent printers are on port 9101 & 9102.
So,
lpadmin -p testprinter1 -vsocket://192.168.10.10:9100 -E
lpadmin -p testprinter2 -vsocket://192.168.10.10:9101 -E
lpadmin -p testprinter3 -vsocket://192.168.10.10:9102 -E

I will have to test to confirm if this works.
 

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LEARN ABOUT OSF1

la88cof

la88cof(8)						      System Manager's Manual							la88cof(8)

NAME

       la88cof - Filter for the Simplified Chinese LA88 printer

SYNOPSIS

       /usr/lbin/la88cof [-c] [-h host] [-i indent] [-l length] [-L locale] [-n login] [-w width] [accounting_file]

OPTIONS

       Prints  control	characters.   Specifies  the  host name of the job owner. This name can contain Hanzi characters.  Specifies the amount of
       indentation. The default value is no (no indentation).  Specifies the page length in lines. The default value is 66.  Specifies the printer
       codeset. This value must be a valid locale name. The default value is zh_CN.dechanzi.  Specifies the login name of the job owner. This name
       can contain Hanzi characters.  Specifies the page width in columns. The default value is 132.

OPERANDS

       Specifies the file to record accounting information.

DESCRIPTION

       The la88cof filter is used to filter text data for the LA88-C printer. The filter handles the device dependencies of the printer  and  per-
       forms  accounting  functions.  At  print  job completion times, accounting records are written to the file specified by the af field in the
       /etc/printcap file.

       The la88cof filter can handle plain text files and files that have been preprocessed by nroff.  Either kind of file can	contain  non-ASCII
       characters.  The  filter  translates  nroff  control  sequences	for  underlining, superscripting, and subscripting into the proper control
       sequences for the LA88-C printer.

       The la88cof filter can be the specified filter in both the of and the if fields in the /etc/printcap file. For more  information  on  these
       fields, see printcap(4).

       The LA88-C printer can be configured to use the software on-demand loading (SoftODL) mechanism to print user-defined characters (UDCs). See
       i18n_printing(5) for a more detailed description of SoftODL.

       To enable SoftODL printing, set the ys field in /etc/printcap to 256.  You can also set the default SoftODL database, style,  and  size	by
       including  the  odldb  and  odlstyle  options in the ya field.  If you specify a value for the yt field, use fifo.  For more information on
       these fields, see printcap(4).

NOTES

       The lpr command supports a number of options and associated arguments to enable localization features supported by  various  printers.  The
       following can be used with the la88cof print filter: To specify the SoftODL database path To specify SoftODL font style and size

       For a complete description of the -A option and its arguments, refer to lpr(1).

ERRORS

       The lf field (default value is /dev/null) in the /etc/printcap file specifies the name of the error log.

SEE ALSO

       Commands: lpr(1), pr(1), lpd(8), pac(8)

       Files: printcap(4)

       Others: i18n_printing(5)

																	la88cof(8)
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