hpnpf(1M)
hpnpf --
network peripheral filter
Synopsis
/usr/lib/hpnp/hpnpf -x peripheral [ -nNrRv ] [ -c port ] [ -l logfile ] [ -p port ]
[ file ... ]
Description
hpnpf reads each file in sequence sending it to a network
peripheral over a TCP connection. It writes any output from the
network peripheral to the standard output. As with
cat(1),
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 an error.
Options
hpnpf accepts the following options:
-c port-
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.
-l logfile-
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.
-n-
Send the PCL escape sequence (ESC&k2G) before the
files. This sets the end-of-line character to be newline (ASCII LF)
instead of carriage-return/line-feed.
-N-
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.
-p port-
Connect to port on the network peripheral. The default is port 9100.
-r-
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.
-R-
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.
-v-
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.
-x peripheral-
Send the file to peripheral; this may be a host name or dotted
decimal Internet address.
Return values
hpnpf returns 0 if all the files are sent successfully. It returns
a non-zero value if a failure was detected.
References
hpnptyd(1M)
© 2004 The SCO Group, Inc. All rights reserved.
UnixWare 7 Release 7.1.4 - 25 April 2004