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DUMPER is a TOPS-20 utility whose function is to transfer files
between disk storage and 9-track magnetic tape. It is invoked by
giving the DUMPER command when you see the "@" prompt at TOPS-20
executive command level. DUMPER will prompt for a command, which will
have the following format:
command is a DUMPER action-command, tape-positioning command, or
arguments is a file specification, date, density, parity, number,
or saveset name, depending on the command. Dates are in
the form day-month-year. For example, type July 21,
1975 as 21-JUL-75. Times are in 24-hour format
(hh:mm:ss), or in AM/PM form. Thus 9:23 in the evening
is either 21:23, or 9:23 PM. Filespecs are in the form
dev:<dir>name.typ.gen. Use of * and % wildcard
characters is permitted. Use commas to separate
multiple source file specifications. A saveset is a
group of files on tape that were saved as the result of
one SAVE command to DUMPER. A saveset name is a string
of alphanumeric characters that is used as a title for a
ACTION-COMMANDS: These commands start, stop, interrupt, or continue a
file transfer or file check.
Aborts execution of previously interrupted command.
See entry for CTRL/E (Control-E) for more information.
ARCHIVE (DISK FILES)
Equivalent to SAVE/ARCHIVE.
CHECK (ALL TAPE FILES)
Checks the files in the current saveset to make sure that they
agree with the files on disk. Actual file checking is not
done; rather, DUMPER searches the File Descriptor Block for
differences between files. DUMPER prints a message if the
files do not agree. Be sure to position the tape to the
beginning of the saveset before giving the CHECK command.
Continues a CHECK, RESTORE, RETRIEVE, SAVE, or
tape-positioning command after you have typed a CTRL/E to halt
it. CONTINUE is legal only when the double-broket ("DUMPER>>")
prompt is visible.
Halts the action of a CHECK, RESTORE, RETRIEVE, SAVE, or
tape-positioning command. When DUMPER processes the CTRL/E,
it prints a message, suspends the action, then prints the
DUMPER prompt followed by another ">" to indicate there is a
command waiting in the background:
After typing CTRL/E, you may give any command that does
not fatally interfere with the interrupted command (eg
SILENCE, HELP or CONTINUE to resume). To give any other
command that might cause DUMPER to lose its place on the
tape (such as any tape-positioning or read/write command)
it is necessary to type ABORT. DUMPER will reply with
Aborting FOO command...
and the regular DUMPER prompt, where "FOO" is the name of
the interrupted command. There is no way to continue an
interrupted command once ABORTed. CTRL/E will be ignored
if DUMPER is in command level or almost finished with
the previously entered command.
Exits immediately to TOPS-20 command level.
MIGRATE (DISK FILES)
Equivalent to SAVE/MIGRATE.
PRINT (DIRECTORY OF TAPE ONTO FILE) destination
Prints a directory of the current tape to the destination
file specification. If you omit the destination file
specification or use recognition, the destination defaults to
TTY: (your terminal).
Same function as the EXIT command.
RESTORE (TAPE FILES) sources (TO) destination
Restores the magnetic tape source file(s) to disk with the
given destination file specification(s). If you do not type a
source file specification, DUMPER uses *.*.*. If you do not
type a destination specification, DUMPER assumes it is the
same as the source specification. When DUMPER begins
restoring files to a directory, it prints the message:
Loading files into <directory>
If you are restoring files from a directory other than yours,
you must specify that directory in the source file
specification. If files exist in the destination directory
with the same names and types as the files on the tape, DUMPER
performs according to the setting of the supersede control
(see the SUPERSEDE command).
RETRIEVE (FILES) filespec
Instructs DUMPER to process the requests in the system file
retrieval queue. A wildcarded filespec can be used to specify
the files to be retrieved. If no filespec is given, all files
in the queue will be processed.
SAVE (disk FILES) [switch] sources (AS) destination
Saves the disk source file(s) onto magnetic tape. If you do
not give any arguments to the SAVE command, DUMPER saves all
the files in your connected directory. As DUMPER saves files,
it reports its progress at the terminal (refer to the FILES
and DIRECTORIES commands). If all the files cannot fit on one
tape, DUMPER requests that the next tape volume in the set be
mounted. After this is done, DUMPER prints a header line and
resumes the save operation.
Switches for the SAVE command are:
/ARCHIVE - Requests that DUMPER save only files that have
been marked for archival
/MIGRATE - Requests that DUMPER save only files that have
been marked for migration
/FULL-INCREMENTAL - Saves all specified files and marks
each file as having been saved
/INCREMENTAL:n - Saves all files that have either: not yet
been saved on n tapes, or been modified or created since
the last INCREMENTAL or FULL-INCREMENTAL run
/NOINCREMENTAL - Files will not be marked as saved (this is
/UNLOAD - unload the tape after writing the saveset if
TRANSFER (TAPE FILES) source (TO) destination
Identical to RESTORE, but the defaults are DSK*:<*>*.*.* for
the source and DSK:<connected-directory>*.*.* for the
TAPE-POSITIONING COMMANDS: These commands control the position of the
tape without transferring any file information between the tape and
Skips to the end of the last saveset on the tape and prints
At End of Tape.
Any saveset names encountered by DUMPER will be displayed
on the terminal.
If the argument is CURRENT-VOLUME or no argument is given, the
currently-mounted volume is rewound to the beginning of tape
(BOT). If the argument is SWITCHING followed by a number,
DUMPER switches to the specified volume and rewinds it.
SKIP (NUMBER OF SAVESETS) n
Skips the tape over n savesets. If n is 0, the tape is
backspaced to the beginning of the current saveset. A
negative value causes backspacing over n savesets. Values of
0 or less are not legal with labeled tapes.
Unloads the tape from the drive. This command works only for
MTA devices. Use the system command DISMOUNT TAPE to unload a
MOUNTed tape device (MT device).
STATUS-COMMANDS: These commands set parameters that affect the
operation of the CHECK, RESTORE, RETRIEVE, and SAVE commands. Once
you set a parameter, it stays in effect until you change it or restart
DUMPER. In commands that can accept a preceding NO, the NO variant
clears the listed condition.
[NO] ABEFORE (DATE AND TIME) date time
Includes only those files that were accessed by a non-write
operation (i.e., typed, printed, or read in some manner)
before the given date and time.
ACCOUNT (OF RESTORED FILES FROM) location
Specifies that any file being restored will have either the
system-default account (usually your current account) or the
account that was stored with the file. Normally, DUMPER uses
the system default.
[NO] ASINCE (DATE AND TIME) date time
Includes only those files which were accessed by a non-write
operation (i.e., typed, printed, or read in some manner) since
the given date and time.
[NO] BEFORE (DATE AND TIME) date time
Includes only those files which were created or last written
(i.e., whose contents were changed) before the given date and
[NO] CHECKSUM (FILES) type
Turns on (or off) checksumming. There are two types of
checksum that may be specified: SEQUENTIAL and BY-PAGES.
Sequential checksums stop at EOF. In interchange mode, only
sequential checksums should be used. BY-PAGES checksums
include every existing word of every existing page of a file.
This command works like the CHECKSUM subcommand in the TOPS-20
command language. When checksumming is turned on, it is
causes checksums to be computed during the save and print
[NO] CREATE (DIRECTORIES FROM TAPE DATA)
Requests (or suppresses if you type NO) the creation of user
directories from directory information on the tape.
Undoes the effect of the ASINCE, MSINCE, SINCE, ABEFORE,
MBEFORE, and BEFORE commands. Only the NO form exists.
DENSITY (OF MAGTAPE) n
Sets the tape density to the given number of bits per inch
(BPI). The density must be 200, 556, 800, 1600, 6250, or
job-default (set by the system command SET TAPE DENSITY). If
you do not give the DENSITY command, DUMPER uses the density
listed by the system command INFORMATION (ABOUT)
TAPE-PARAMETERS. If the tape is labeled, the density of the
tape is already determined by the label information on the
Starts (or stops, if you type NO) printing on your terminal
each directory name as the directory is saved or restored.
Normally, DUMPER prints each directory name.
Starts (or stops, if you type NO) printing on your terminal
each file specification as the file is saved or restored.
Normally, DUMPER does not print each file specification.
FORMAT (VERSION NUMBER IS) n
Allows DUMPER to read DUMPER tapes that were written with
older versions of DUMPER. The default format is 6.
Prints this list of the valid DUMPER commands on your terminal.
[NO] INITIAL (FILESPEC) filespec
Starts (or stops, if you type NO) checking, restoring, or
saving at the file identified by filespec. This condition is
cleared once it has taken effect.
[NO] INTERCHANGE (FORMAT)
Starts (or stops, if you type NO) using the DECSYSTEM-10
(TOPS-10 BACKUP) interchange format in reading and writing
[NO] LIST [switches] (LOG INFORMATION ON FILE) filespec
Makes a list of the files transferred in the file identified
by filespec. If you do not give a file specification, DUMPER
uses the file LPT:DUMPER.LOG. By default, LIST is turned off.
If the /MAIL switch is given, this writes a file that can be
read back with the MAIL command. The default is then
[NO] MBEFORE (DATE AND TIME) date time
Include only those files modified (i.e., written, created,
appended, or renamed) before the specified date and time.
[NO] MSINCE (DATE AND TIME) date time
Includes only those files modified (i.e., written, created,
appended, or renamed) since the specified date and time.
PARITY (OF MAGTAPE) type
Sets the parity of the current magnetic tape to EVEN or ODD.
DUMPER normally uses the parity listed in the system command
INFORMATION (ABOUT) TAPE-PARAMETERS.
PROTECTION (OF RESTORED FILES FROM) location
Takes the protection of the restored files from the system
default (usually 770000) or from the tape.
SET BLOCKING-FACTOR (TO) n (RECORDS)
Sets the number of logical records per physical record written
by DUMPER. The default value is 1.
SET TAPE-NUMBER (DECIMAL NUMBER) n
Used for multi-reel savesets when continuing a restore after a
crash or when restoring a file non-sequentially from a
multi-reel saveset. Also used for continuing a save after a
DUMPER>SET TAPE-NUMBER 4
Stops (or starts, if you type NO) printing directory names and
file specifications as the files are saved or restored.
[NO] SINCE (DATE AND TIME) date time
Includes only those files that were created or last written
(i.e., whose contents were changed) since the specified date
Specifies the name to be written in the saveset header on the
tape. The name may by any string of up to 200 characters long.
Sets the condition under which DUMPER will supersede a disk
file with a magnetic tape file of the same file name and type.
Use ALWAYS when you always want to supersede the disk file
with the tape file. Use NEVER when you never want to
supersede the disk file; in this case, a file is transferred
from tape only if there is no disk file in the directory with
the same file name and type. Use OLDER when you want the tape
file to supersede only older disk files; in this case, a tape
file is transferred to disk file. If you do not give a
SUPERSEDE command, DUMPER uses SUPERSEDE OLDER. Refer to the
TAPE (FILESPEC) tapespec
Specifies the tape device to be used for file transfers. The
tapespec is either a physical tape drive (MTAn:), a logical
tape device (MTn:), or a logical name.
You do not have to give a TAPE command if you assign a
magnetic tape device name to the logical name MTA-DUMPER.
1. Saving multiple groups of files in different directories under
different saveset names:
@MOUNT TAPE DTEST:/WRITE-ENABLED /LABEL-TYPE:ANSI
[Mount request DTEST queued, request #21]
[Tape set DTEST, volume DTEST mounted]
[DTEST: defined as MT0:]
DUMPER>SSNAME FOO.BAR tape
DUMPER tape #1, Tue 26-Jun-84 1501. "FOO.BAR tape" volid DTEST
Total files dumped: 12
Total pages dumped: 217
DUMPER>SSNAME PART II
DUMPER>SAVE (DISK FILES) RANDOM:<THALI>*.*.*
DUMPER tape #1, Tue 26-Jun-84 1501. "PART II" volid DTEST
Total files dumped: 9
Total pages dumped: 297
@DISMOUNT TAPE DTEST:
[Tape dismounted, logical name DTEST: deleted]
2. Renaming files on Tape:
@MOUNT TAPE FOO: /WRITE-ENABLED /LABEL-TYPE:ANSI
[Mount request FOO queued, request #22]
[Tape set FOO, volume FOO mounted]
[FOO: defined as MT0:]
Tape specification needed: FOO:
DUMPER>SSNAME Installation-Specific Routines
DUMPER>SAVE WOK:<ALETHEA>*.*.* (AS) RANDOM:<UNSUPPORTED>*.*.*
DUMPER tape #1, Tue 26-Jun-84 1504. "Installation-Specific Routines" volid
WOK:<ALETHEA> (AS) RANDOM:<UNSUPPORTED>
Total files dumped: 197
Total pages dumped: 10342
@DISMOUNT TAPE FOO:
[Tape dismounted, logical name FOO: deleted]
3. Printing a directory of files on tape:
@MOUNT TAPE TEST1: /READ-ONLY /LABEL-TYPE:ANSI /VOLUME-SET:SMAYO
[Mount request TEST1 queued, request #23]
[Tape set TEST1, volume SMAYO mounted]
[TEST1: defined as MT0:]
DUMPER tape #1, Tue 26-Jun-84 1504. "Version 7.0" volid DTEST
Filename Last write date
Pages Checksum Page #1
SNARK:<RANDOM>ADVISE.MAC.27 25-Nov-82 1130
SNARK:<RANDOM>BOOTUP.EXE.1 27-Apr-84 1304
SNARK:<RANDOM>CRASH.LOG.29762 31-Dec-99 1117
SNARK:<RANDOM>FOO.BAR.1 23-Apr-74 0104
SNARK:<RANDOM>GI.GO.9 26-Nov-79 1102
SNARK:<RANDOM>INDEX.FILES.7 12-Apr-84 1438
SNARK:<RANDOM>TH-TH-THATS.ALL-FOLKS.222 22-Jan-81 0905
End of Tape.
Saveset "Version 7.0"
End of Tape.
Number of files skipped: 7
@DISMOUNT TAPE TEST1:
[Tape dismounted, logical name TEST1: deleted]
4. Interrupting and aborting, showing each filename as it is being written:
@MOUNT TAPE BACKUP: /WRITE-ENABLED /LABEL-TYPE:ANSI
[Mount request BACKUP: queued, request #24]
[Tape set BACKUP, volume BACKUP mounted]
[BACKUP: defined as MT0:]
DUMPER>SSNAME Backup of 27-Jun-84 18:00
DUMPER>SAVE FLOAT:<GUMBY>A*.*.* (AS) SNARK:<THALI>A*.*.*
DUMPER tape #1, Tue 26-Jun-84 1510, volid TEST1
FLOAT:<GUMBY> (as) SNARK:<THALI>
FLOAT:<GUMBY>ACCESS.EXE.1 (as) SNARK:<THALI>ACCESS.EXE.1
FLOAT:<GUMBY>ACL.EXE.1 (as) SNARK:<THALI>ACL.EXE.1
FLOAT:<GUMBY>ADJPSX.EXE.1 (as) SNARK:<THALI>ADJPSX.EXE.1
FLOAT:<GUMBY>ADJPSX.HLP.1 (as) SNARK:<THALI>ADJPSX.HLP.1
FLOAT:<GUMBY>AID.EXE.1 (as) SNARK:<THALI>AID.EXE.1
FLOAT:<GUMBY>ALU.EXE.1 (as) SNARK:<THALI>ALU.EXE.1
FLOAT:<GUMBY>ALUF.EXE.1 (as) SNARK:<THALI>ALUF.EXE.1
FLOAT:<GUMBY>ASCII.EXE.1 (as) SNARK:<THALI>ASCII.EXE.1 ^E
Aborting SAVE command...
@DISMOUNT TAPE BACKUP:
[Tape dismounted, logical name BACKUP: deleted]
[End of DUMPER.HLP 23-Jan-85]