Dump Command--linux command application of large dictionary 729 commands interpretation

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Dump command

use the dump command to check the files on the Ext2/3/4 file system and determine which files need to be backed up. These files are copied to the specified disk, tape, or other storage media for safekeeping.

command syntax:

dump [ options ] [ directory | File System ]

The meanings of the options in the command are as follows is shown.

table dump command option meaning

options

-< backup level ;

Specify the backup level, the backup level number is 0~9 0

-d < file ;

settings dump The file name and path of the backup information record, default is /etc/ Dumpdates file

-F < backup file name >

Specify the path and name of the backup file

-U

When dump is successful, the/etc/dumpdates file is updated to record the date, storage level, file system, and other information

-t < date > 

Specify the date and time to start the backup, instead of the /etc/dumpdates file for dump time

-Q

make Dump Abort now

-W

Displays the files that need to be backed up and the level, time, and date of the last backup

-W&NBSP;&NBSP;

and -w Span style= "font-family: ' The song body '; background: #FFFFFF;" > option is similar, but only the /etc/mtab and /etc/fstab

-h <

nodump file

-s

size estimation. Determines the amount of space required and does not actually perform the dump, and displays the estimated number taken, in

-e <inode>

exclude the specified inode inode The argument is a comma-delimited inode numbered list

-V

Show more information

Example : Full backup/ boot directory.

[[Email protected]~]# dump-0uf/root/boot0.dump/boot

Dump:date of this level 0 Dump:mon 1901:02:33 2013

DUMP:DUMPING/DEV/SDA1 (/boot) to/root/boot0.dump

DUMP:Label:none

Dump:writing Kilobyte Records

Dump:mapping (Pass I) [Regular files]

Dump:mapping (Pass II) [directories]

dump:estimated 23349 blocks.

Dump:volume 1 started with block 1 At:monaug 19 01:02:33 2013

Dump:dumping (Pass III) [directories]

Dump:dumping (Pass IV) [Regular files]

Dump:closing/root/boot0.dump

Dump:volume 1 completed At:mon 1901:02:33 2013

Dump:volume 1 23440 blocks (22.89MB)

dump:23440 blocks (22.89MB) on 1 volume (s)

Dump:finished in less than a second

Dump:date of this level 0 Dump:mon 1901:02:33 2013

Dump:date This dump Completed:mon 19 01:02:33 2013

Dump:average Transfer rate:0 kb/s

Dump:dump is done

Example : Incremental backup/ boot directory.

[[Email protected]~]# dump-1uf/root/boot1.dump/boot

Dump:date of this level 1 Dump:mon 1901:02:44 2013

Dump:date of last Level 0 Dump:mon 1901:02:33 2013

DUMP:DUMPING/DEV/SDA1 (/boot) to/root/boot1.dump

DUMP:Label:none

Dump:writing Kilobyte Records

Dump:mapping (Pass I) [Regular files]

Dump:mapping (Pass II) [directories]

dump:estimated blocks.

Dump:volume 1 started with block 1 At:monaug 19 01:02:44 2013

Dump:dumping (Pass III) [directories]

Dump:dumping (Pass IV) [Regular files]

Dump:closing/root/boot1.dump

Dump:volume 1 completed At:mon 1901:02:44 2013

Dump:volume 1 blocks (0.02MB)

Dump:20 blocks (0.02MB) on 1 volume (s)

Dump:finished in less than a second

Dump:date of this level 1 Dump:mon 1901:02:44 2013

Dump:date This dump Completed:mon 19 01:02:44 2013

Dump:average Transfer rate:0 kb/s

Dump:dump is done


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Dump Command--linux command application of large dictionary 729 commands interpretation

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