network peripheral filter
/usr/lib/hpnp/pnpf -x peripheral
[ -nNrRv ]
[ -c port ]
[ -l logfile ]
[ -p port ] [ file ... ]
hpnpf reads each file in sequence sending it to a network
peripheral over a TCP connection. hpnpf
writes any output from the network peripheral to the standard output. As
hpnpf reads from the standard input
if no input file is given or if the argument
- is encountered.
This enables you to combine the standard input with other files.
If hpnpf fails to make a connection to peripheral,
it retries the connection until it is successful.
The -R option prevents it retrying.
hpnpf can operate as an output filter, an input filter,
and as both an output and input filter (``relay'' mode).
Using hpnpf as a relay process (using the -r
option) allows the banner page and all print job files to be sent to
the network peripheral over a single connection.
hpnpf accepts a banner page from
the standard input, sends it to the network peripheral, and
then relays further data sent by the input
filters. The file .port, written by hpnpf in the
current directory, indicates the control and data ports
that the input filters use to connect to hpnpf.
After the input filter completes a file, it waits
for a single byte response from hpnpf
on the control port.
A response of zero indicates that hpnpf transmitted the data
successfully and its buffers are empty. A non-zero response indicates
hpnpf accepts the following options:
Create a control line connection. This option is only
used when /etc/printcap specifies hpnpf
as an input filter to pass data through a relay process on
the same host.
Write verbose logging information to logfile. The
logging messages are detailed messages about what hpnpf
is doing. Included in the messages are how many bytes
are read and written to the network connection.
hpnpf performs no logging if you omit this option.
Send the PCL escape sequence (ESC&k2G) before the files.
This sets the end-of-line character to be newline (ASCII LF) instead
Translate newline (ASCII LF) characters to carriage-return/line-feed
character pairs for data sent to the network peripheral. Do not use this
option for binary transfers.
Connect to port on the network peripheral.
The default is port 9100.
Operate in relay mode. This option is only used when
/etc/printcap specifies hpnpf
as an output filter together with a separate input filter.
hpnpf ignores any files listed on the command line
when operating in relay mode.
Do not retry if the first connection attempt fails. This option
allows the retry interval and number of retries before giving up to be
controlled externally to hpnpf.
Verbose mode. Display messages to the standard error when the connection is
initiated and when it succeeds. Print a number sign ``#''
to the standard error output for each 1024 bytes transferred.
Send the file to peripheral; this may be a host name or
dotted decimal Internet address.
hpnpf returns 0 if all the files are sent successfully. It returns a
non-zero value if a failure was detected.
hpnpf is not part of any currently supported standard;
it was developed by Hewlett Packard and is used with permission.
© 2003 Caldera International, Inc. All rights reserved.
SCO OpenServer Release 5.0.7 -- 11 February 2003