playback man page
playback — IBM x3270 trace file playback tool
playback [ -p port ] trace_file
playback opens a trace file (presumably created by the x3270 Trace Data Stream facility) and plays the host data it contains back over a socket to processes that connect to it. It also displays the data produced by the process in response.
Once connected to a process, playback is used interactively. Keyboard commands control the flow of data from the file to the socket. These commands are:
Send one line of data.
Send one record of data (send data until the TELNET EOR sequence is reached).
Disconnect the current socket and wait for another connection.
Suppose you wanted to play back a trace file called /usr/tmp/x3trc.12345. In one window, run:
In another window, start x3270 with the command:
x3270 localhost 4001
playback will announce the connection.
Thereafter, the s and r commands will send data from the file to x3270.