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151 lines
4.5 KiB
Groff
151 lines
4.5 KiB
Groff
.\" Copyright 2017 IBM Corp.
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.\" s390-tools is free software; you can redistribute it and/or modify
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.\" it under the terms of the MIT license. See LICENSE for details.
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.\"
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.TH TAPE390_DISPLAY 8 "Apr 2006" "s390-tools"
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.SH NAME
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tape390_display \- display messages on the display unit of a zSeries tape
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device.
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.SH SYNOPSIS
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.TP 16
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.B tape390_display
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.RB [ \-b | \-\-blink ]
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.br
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.RB [ \-h | \-\-help ]
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.br
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.RB [ \-l | \-\-load ]
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.br
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.RB [ \-t <type>| \-\-type <type>]
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.br
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.RB [ \-q | \-\-quiet ]
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.br
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.RB [ \-v | \-\-version ]
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.br
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.IR message1
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.RB [
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.I message2
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.RB ]
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.I device
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.SH DESCRIPTION
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\fBtape390_display\fR displays one or two 8-byte messages on the display
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unit of a zSeries tape device. Characters to be displayed include capital
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letters A-Z, numerics 0-9 and special characters.
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However some special characters may not display on all device types. The
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characters that should display on model 3490 are:
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.br
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'@$#,./()*&+-=%|:_<>?;' and the <cent> character.
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.br
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Spaces and shell-sensitive characters have to be quoted.
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.SH OPTIONS
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.TP 8
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\fB\-h\fR or \fB\-\-help\fR
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Print help text.
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.TP
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\fB\-b\fR or \fB\-\-blink\fR
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Display \fImessage1\fR repeatedly for 2 seconds at half-second intervals.
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This option is ignored if two messages are specified on command line.
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.TP
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\fB\-l\fR or \fB\-\-load\fR
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If this option is given the display request will cause a load request to be
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sent to the automatic tape loader (if installed). The next indexed tape will
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then be loaded if the loader is in 'system' mode. Otherwise the request is
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ignored.
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.TP
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\fB\-q\fR or \fB\-\-quiet\fR
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This option causes the command to run in quiet mode which will suppress
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all warning messages.
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.TP
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\fB\-t\fR \fItype\fR or \fB\-\-type\fR \fItype\fR
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Set the type of the message to be displayed. This influences how long
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the message(s) stay on the display. Available types are:
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.RS
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.TP 16
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.B standard
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The message(s) stay displayed until the drive executes the next tape
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movement command. This is the default.
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.TP
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.B load
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Displays the message(s) until a tape is loaded. If there already is
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a tape loaded to the device, nothing is displayed at all.
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.TP
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.B unload
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This will display the message(s) until currently loaded tape is unloaded.
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Again, if the drive \fIis\fR currently unloaded there is no output at all.
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.TP
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.B noop
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For testing purposes only, this will access the drive but won't do anything
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at all (no operation). This doesn't seem to work with 3590 tape devices.
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.TP
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.B reload
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This display type \fBrequires\fR two messages. The first message is
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displayed as long as there is a tape loaded up to the time the unload
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operation is completed (or, if there isn't a tape loaded, it will be
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ignored). The second message is displayed as soon as a tape gets loaded
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into the drive.
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.RE
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.TP
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\fB\-v\fR or \fB\-\-version\fR
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Print the S/390 tools package version, the utility version and exit.
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.TP 8
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\fBmessage1\fR [ \fBmessage2\fR ]
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The message(s) to be displayed. They stay displayed until either the
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ending condition for the message type takes place or the display is
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updated with another message.
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.br
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If two messages are specified, they are alternated on the display.
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Each message is then displayed repeatedly for 2 seconds
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at half-second intervals.
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.TP
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\fBdevice\fR
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The tape device on which the message(s) will be displayed, e.g.:
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.sp
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\fB/dev/ntibm\fR\fI0\fR
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.br
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.SH EXAMPLES
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\fBtape390_display \-\-blink \-\-type unload "TESTING" /dev/ntibm\fR\fI0\fR
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.RS
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Let the message TESTING blink on the display of the tape unit until the
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tape is removed (or another message is given). If there is no tape in the
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drive, nothing happens.
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.RE
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\fBtape390_display "BACKUP" "COMPLETE" /dev/ntibm\fR\fI0\fR
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.RS
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This will display the messages BACKUP and COMPLETE each for 2 seconds
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until the tape is moved, ejected or (if there isn't a tape in the
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device) inserted.
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.RE
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\fBtape390_display \-\-type reload "UNLOAD" "LOAD" /dev/ntibm\fR\fI0\fR
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.RS
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The UNLOAD message will be displayed if there is a tape inserted and as
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long as the tape isn't removed. After that the LOAD message is displayed
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until a tape is inserted. If there is no tape inserted when the command
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.RE
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\fBtape390_display \-\-load \-\-type load "LOADING" /dev/ntibm\fR\fI0\fR
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.RS
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Causes the device to display the message LOADING until a tape is inserted
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and to instruct the automatic stacker to load the next tape (if the mode
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of operation is \fIsystem\fR). If there already is a tape loaded, nothing
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will happen at all.
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.RE
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.SH AUTHOR
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.nf
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This man-page was written by Despina Papadopoulou<despina_p@de.ibm.com>
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.nf
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Updates by Stefan Bader<shbader@de.ibm.com>
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.fi
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