Take notes on Linux private food from laruence (8) -- File Search and file management 2

IV. gzip compression: the gunzipLinux standard compression tool can achieve a compression ratio of 75% for text files compress, and the uncompress old Unix compression tool bzip2, bunzip2's Linux compression tool has a higher compression ratio than gzip,

IV. compression

Gzip, gunzip

Linux standard compression tool

Up to 75% compression ratio for text files

Compress, uncompress VcD4KPHA + vsm1xFVuaXjRucv1uaS + 3zwvcD4KPHA + Incubator/NDCtcRMaW51eNG5y/incubator + pgltzybzcm9 "http://www.2cto.com/uploadfile/Collfiles/20140108/2014010813024927.jpg" alt = "\">

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.