komenda dump użycie dump co to jest
Jak użyć DUMP? Definicja w konsoli accesses ext2 and ext3 file devices directly, quickly backing up.
Znaczenie komenda dump użycie dump definicja.

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Komenda/polecenie: Jak użyć dump

Uruchomienie, wykonanie: dump [options] files

Jak działa, co robi: System administration command. This simple backup utility accesses ext2 and ext3 file devices directly, quickly backing up files without affecting file access times. files may be specified as a mount point or as a list of files and directories to back up. While you can use this on a mounted system, dump may write corrupted information to the backup when the kernel has written only part of its cached information. Dump maintains a record of which files it has saved in /etc/dumpdates, and will perform incremental backups after creating an initial full backup. Use the restore command to restore a dump backup

Dostępne opcje, wywołanie: -a

Write until end-of-media. Default behavior when writing to tape drives.

-A file

Create a table of contents for the archive in the specified file.


Block size in kilobytes to use in dumped records. By default, it is 10, or 32 when dumping to a tape with a density greater than 6250BPI.


Specify number of blocks to write per volume.


Treat target as a 1700-foot-long cartridge tape drive with 8000 bpi. Override end-of-media detection.

-d density

Specify tape density.

-D file

Write dump information to file instead of /etc/dumpdates.

-E file

Exclude inodes specified in file.

-f files

Write backup volumes to the specified files or devices. Use - to write to standard output. Separate multiple files with a comma. Use host:file or user@host:file to write to a networked host using either the rmt program or the program specified by the RMT environment variable.

-F script

Run script at the end of each volume other than the last. dump will pass the current device and volume number to the script. The script should return 0 to continue, 1 to prompt for a new tape, or any other exit value to abort the dump. The script will run with the processes real user and group ID.

-i inodes

Specify a comma-separated list of inodes to skip.

-I n

Ignore the first n read errors. dump ignores 32 read errors by default. Specify 0 to ignore all errors. You may need to do this when dumping a mounted filesystem.


Compress each block using the bzlib library at the specified compression level. By default dump uses level 2 compression.


Use Kerberos authentication when writing to a remote system.

-L label

Write the specified volume label into the dump header.


Save only metadata when backing up changed but not modified files.


Create a multivolume backup. Treat any filename provided with -f as a prefix.


Use wall to notify members of group operator when prompting for information.


Abort the backup instead of prompting for information when operator input is required.

-Q file

Create Quick Access information in the specified file for use by restore.

-s n

Write only n feet of tape in a single volume. Prompt for a new tape upon reaching this limit.


Calculate and print the amount of space required to perform the backup, then exit.

-T date

Only back up files changed or modified since date. This overrides the time given in /etc/dumpdates.


Update /etc/dumpdates after completing the backup.


Print verbose information about the dump.


Generate a report on the backup status of all filesystems based on information in /etc/dumpdates and/etc/fstab.


Generate a report of filesystems that need to be backed up. Only report on filesystems listed in /etc/fstab and /etc/mtab that need to be backed up.


Compress each block using the lzo library.


Compress each block using the zlib library. If provided, use the specified compression level. The default is 2.

Użycie DUMP zastosowanie komendy na linii poleceńw Słownik D .