.\" SCCSID: @(#)rdt.8	8.1	9/11/90.TH rdt 8 "" "" Unsupported.SH Namerdt \-  read diagnostic tape.SH Syntax.B rdt .I function-key[ \fB\-B\fIblksize\fR ] [ \fB\-D\fIdensity\fR ] [ \fIfilename\fR ... ].SH DescriptionThe .PN rdtcommand reads diagnostic programs to disk from labeled tapes.  The files are placed in the currentuser's area.The reading is based upon theprecepts set forth in the ANSI standard x3.27-1978.The tape is assumed to have been writtenby a VAX/VMS system. .PPThe.I filenamearguments list the files to be read.As each file is read from the tape, a disk file of thesame name is created in the user's area to contain the diagnostic program..SH Function KeysThe function performed by the.PN rdtcommand is specifiedby one of the following characters:.TP 8 .B tThe names of the specified files are listed.If no file argument is given, all the files on the tape are listed..TP 8 .B vNormally,.PN rdtdoes its  work  with little terminal output.The .B v (for verbose)option causes.PN rdtto type the name of each fileafter processing it.With the \fBt\fR function, \fBv\fR gives more informationabout the tape entries than the name..TP 8.B xThe named files are extracted from the tape.If no .I filenameargument is given, the entirecontent of the tape is extracted..SH Options.TP 8\fB\-B\fIblksize\fRThe.I blksizeparameter is the block size for tape records, in bytes.The default is 2048, the maximum is 20480.The block size may also be specified as multiples of 512 or 1024 byappending either the character b or k to .IR blksize , respectively.  For example, block sizes 4b and 2k both equal 2048 bytes.  .TP 8 \fB\-D\fIdensThe.I densparameter is the density of the tape, in bits per inch.Possible values are 800 or 1600.The default is 1600 bits per inch.If .I dens is neither 800 nor 1600,the .PN rdtcommandtakes .I dens to be the name of the tape device. For example, /dev/rmt0h.The device must be a raw, nonrewinding magnetic tape drive..SH ExamplesThis example shows how to load the file TEST1 fromrmt0h..EXrdt x TEST1.EEThis example shows how to load the contents of a whole800 bpi tape on.PN /dev/nmt0l ..EXrdt \-D/dev/nmt0l.EE.SH DiagnosticsDiagnostics from.PN rdtare written on the standard error file.There are two forms: warnings, which are not fatal,and errors, which are.The majority of diagnostics are intended to be self-explanatory.Some that might not be are:.PP\fBillegal label format (\fIhdr\fB)\fR..brThe header .PN rdtis reading contains an incorrect label identifieror label number.The correct header label name is enclosed between parentheses..PP\fBpwd failed!\fR.brCannot execute .PN /bin/pwd or .PN /usr/bin/pwd ..PP\fBcannot find mkdir!\fR.brCannot execute .PN /bin/mkdir or .PN /usr/bin/mkdir ..SH Files.TP 12.PN /dev/rmt0h	1600 bpi tape device (default)