PR3287(1) General Commands Manual PR3287(1)
pr3287 - IBM host printing tool
pr3287 [ options ] [ L: ] [[ LUname [, LUname ...]@] hostname [: port ]]
pr3287 opens a telnet connection to an IBM host, and emulates an IBM 3287 printer. It implements RFCs 2355 (TN3270E), 1576 (TN3270) and
1646 (LU name selection).
If the hostname is prefixed with L:, the connection will be made through an SSL tunnel. pr3287 also supports TELNET START-TLS option nego-
tiation without any need for command-line options.
A specific LU name to use may be specified by prepending it to the hostname with an `@'. Multiple LU names to try can be separated by com-
mas. An empty LU can be placed in the list with an extra comma.
The port to connect to defaults to telnet. This can be overridden by appending a port to the hostname with a colon `:'.
pr3287 understands the following options:
Causes the session to be associated with the specified LUname.
In LU3 formatted mode, print blank lines even if they are all NULLs or control characters. (This is a violation of the 3270 printer
protocol, but some hosts require it.)
Specifies a directory containing CA (root) certificates to use when verifying a certificate provided by the host.
Specifies a PEM-format file containing CA (root) certificates to use when verifying a certificate provided by the host.
Specifies a file containing a certificate to provide to the host, if requested. The default file type is PEM.
Specifies the type of the certificate file specified by -certfile. Type can be pem or asn1.
Specifies a certificate chain file in PEM format, containing a certificate to provide to the host if requested, as well as one or
more intermediate certificates and the CA certificate used to sign that certificate. If -chainfile is specified, it overrides
Specifies an alternate host code page (input EBCDIC mapping). The default maps the U.S. English (037) code page to the current
locale character encoding. pr3287 generally supports the same host character sets as x3270.
Specifies the command to run for each print job. The default is lpr.
-crlf Causes newline characters in the output to be expanded to carriage-return/linefeed sequences.
Causes pr3287 to become a daemon (background) process.
Causes pr3287 to complete the print job after seconds seconds of inactivity.
Causes pr3287 to flush any pending printer output whenever an EM (End of Medium) order arrives in unformatted 3270 mode. This can
help preserve multi-page output with hosts that do not clear the 3270 buffer between pages.
Ignore TN3270E PRINT-EOJ commands, relying on UNBIND commands to indicate the ends of print jobs.
-ffeoj Causes pr3287 to add a FF (formfeed) at the end of each print job.
Causes pr3287 to ignore a FF (formfeed) order if it occurs at the top of a page.
In SCS mode, causes pr3287 to pass FF (formfeed) orders through to the printer as ASCII formfeed characters, rather than simulating
them based on the values of the MPL (maximum presentation line) and TM (top margin) parameters.
Specifies a file containing the private key for the certificate file (specified via -certfile or -chainfile). The default file type
Specifies the type of the private key file specified by -keyfile. Type can be pem or asn1.
Specifies the password for the private key file, if it is encrypted. The argument can be file:filename, specifying that the pass-
word is in a file, or string:string, specifying the password on the command-line directly.
Causes pr3287 to connect via the specified proxy, instead of using a direct connection. The host can be an IP address or hostname.
The optional port can be a number or a service name. For a list of supported proxy types, see PROXY below.
Causes pr3287 to reconnect to the host, whenever the connection is broken. There is a 5-second delay between reconnect attempts, to
reduce network thrashing for down or misconfigured hosts.
Allow self-signed host certificates.
-trace Turns on data stream tracing. Trace information is usually saved in the file /tmp/x3trc.pid.
Specifies the directory to save trace files in, instead of /tmp.
Specifies a file containing data that will be sent to the printer before each print job. The file contents are treated as transpar-
ent data, i.e., they are not translated in any way.
Specifies a file containing data that will be sent to the printer after each print job. The file contents are treated as transpar-
ent data, i.e., they are not translated in any way.
-v Display build and version information and exit.
Verify the host certificate for tunneled SSL and negotiated SSL/TLS connections.
SIGINT, SIGHUP and SIGTERM cause the current print job to be flushed (any pending data to be printed) and pr3287 to exit.
SIGUSR1 causes the current print job to be flushed without otherwise affecting the pr3287 process.
The -proxy option causes pr3287 to use a proxy server to connect to the host. The syntax of the option is:
The supported values for type are:
Proxy Type Protocol Default Port
http RFC 2817 HTTP tunnel (squid) 3128
passthru Sun in.telnet-gw none
socks4 SOCKS version 4 1080
socks5 SOCKS version 5 (RFC 1928) 1080
telnet No protocol (just send connect host none
The special types socks4a and socks5d can also be used to force the proxy server to do the hostname resolution for the SOCKS protocol.
x3270(1), c3270(1), telnet(1), tn3270(1)
Data Stream Programmer's Reference, IBM GA23-0059
Character Set Reference, IBM GA27-3831
3174 Establishment Controller Functional Description, IBM GA23-0218
RFC 1576, TN3270 Current Practices
RFC 1646, TN3270 Extensions for LUname and Printer Selection
RFC 2355, TN3270 Enhancements
Copyright 1993-2013, Paul Mattes.
Copyright 1990, Jeff Sparkes.
Copyright 1989, Georgia Tech Research Corporation (GTRC), Atlanta, GA
All rights reserved.
Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are
* Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in
the documentation and/or other materials provided with the distribution.
* Neither the names of Paul Mattes, Jeff Sparkes, GTRC nor the names of their contributors may be used to endorse or promote products
derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY PAUL MATTES, JEFF SPARKES AND GTRC `AS IS' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL PAUL MATTES, JEFF
SPARKES OR GTRC BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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26 February 2013 PR3287(1)