walsh (04/14/83)
Manual pages for the programs we use at Harvard follow. They are currently running on 70s, Vaxen, and BBN C70s. They were initially written by Steve Dyer (now of BBN). Bob Walsh Harvard Science Center (617) 495-5320
walsh (04/14/83)
MTBACKUP(8H) UNIX Programmer's Manual MTBACKUP(8H)
NAME
mtbackup - incremental file system dump
SYNOPSIS
/privbin/mtbackup [ -daily -weekly -monthly ] [ -tell ]
DESCRIPTION
_M_t_b_a_c_k_u_p copies to magnetic tape all files on all currently
mounted filesystems changed after a certain date. Its
method of doing this is by exec'ing (2) /privbin/mtb (8).
Mtbackup's purpose in life is to run mtb with the proper
argument. Mtbackup, after finding out the date, will run a
monthly backup if the time is between noon the first of a
month and noon on the second. Otherwise, if the time lies
between noon Thursday and noon Friday, a weekly backup is
performed. If none of the above two cases holds, a daily
backup is performed.
A particular type of backup may be forced by using the
appropriate switch.
The "-tell" switch tells when the last type of the various
kinds of backup was done.
Please avoid forcing a particular kind of backup. Let the
program make the decisions.
SEE ALSO
mtb(8H)
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MTB(8H) UNIX Programmer's Manual MTB(8H)
NAME
mtb - incremental file system dump
SYNOPSIS
/privbin/mtb [ -daily -weekly -monthly -semester ]
DESCRIPTION
_M_t_b copies to magnetic tape all files on all currently
mounted filesystems changed after a certain date. The date
after which all modified files are dumped is the date of the
last more inclusive dump. For example, files place on a
daily dump tape are those changed since the last weekly was
completed.
SWITCHES
[-verbose]
This switch causes the program to list the files as they are
placed on the tape.
[-from pathname]
This switch forces mtb not to dump files who come alphabeti-
cally before pathname. It can be used to resume a backup if
for some reason a tape was imporperly written, didn't com-
plete, or if the mtb process died. You simply restart mtb
using the file that was to be the first file on the aborted
tape as the argument to from.
[-nice]
Causes mtb to give itself a slightly better priority to do
the job quicker.
[-root pathname]
Normally mtb descends the directory tree starting at "/".
This substitutes a different tree on which to perform
backup.
SIGNALS AND MTB
When mtb receives a SIGTERM (15), it prints out on the con-
sole what files it is currently dumping.
SEE ALSO
mtbackup(8H)
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RETRIEVE(1H) UNIX Programmer's Manual RETRIEVE(1H)
NAME
retrieve - recover files from incremental backup
SYNOPSIS
/usr/bin/retrieve
DESCRIPTION
_R_e_t_r_i_e_v_e extracts files from a tape written by mtb(8). The
format of a backup tape written by mtb is different from
that written by dump(8), tar(1), tp(1), or standard ansi
format.
SWITCHES
[-verbose]
This switch causes the program to list the files as they are
extracted from the tape.
[-confirm]
Lists each file before it is extracted and asks if you
really want to extract it.
[-fi pathname]
List all files on the tape whose path starts with pathname.
[-dir pathname]
Lists all the files with more complete directory informa-
tion.
[-extract] [file1 ...]
Extracts the named files from the tape.
[-short]
When used with -extract, the files are not put in their ori-
ginal paths, but in the current directory. No subdirec-
tories are used. All files are put in the current direc-
tory.
[-tree tpath]
Turns off the short switch. The specified files are
extracted to the current directory with the initial segment
(tpath) of their full pathname removed. For example,
retrieve -extract -tree /fs/b/ /fs/b/dyer/misc/
would extract the files "/fs/b/dyer/misc/*" into the current
directory as "dyer/misc/*". Subdirectories are used, in
contrast to the -short switch.
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RETRIEVE(1H) UNIX Programmer's Manual RETRIEVE(1H)
SEE ALSO
mtbackup(8)
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