Take notes on Linux Private food from laruence (8) -- file search and File Management 2

Iv. Compression

Gzip, gunzip

Linux Standard compression Tool

Up to 75% compression ratio for text files

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5. Packaging (tar)

Used for backup on a tape drive, floppy disk, or ZIP device. It can also be backed up on a hard disk file. (Compression function is not provided)

Main parameters:

C: Back up the file

V: process output

F: Change the file name after packaging.

T: list the content in the tar package

X: Solves the backup from a file.

Z: Use the gzip tool for compression

J: Use bz2 tool for compression

C: Change the file path after Packaging

System (dump/restore)

Back up and restore the ext2/3 File System

It cannot be used on other file systems

You can choose to perform full backup or Incremental backup.

Dump-0u-f/var/tmp/hda2dump/dev/hda1: Back up/dev/hda1 to the/var/tmp/hda2dump file.

0: indicates full backup.

U: Write the backup record to/etc/dumpdates (this parameter can be used only in the top-level directory of the backup partition)

F: Specifies the path to the backup file.

Restore-rf/var/tmp/hda2dump: restore the backup file

R: Restore the backup file

T: list the contents of the backup file.

F: Specifies the backup file.