Linux Compression Archive Summary

Linux compressed with files, directory compression and archiving

File compression type: gzip, bzip2, XZ

Directory compression: Zip

Archive: Tar

Various file compression commands are implemented in the following several functions, but the syntax is slightly different

Gzip:

File suffix: gz

Compression: gzip files, delete original files

[Email protected] test]# lltotal 192-RW-------.  1 root root 193746 Sep 12:05 test01[[email protected] test]# gzip test01[[email protected] test]# lltotal 32-RW-------. 1 root root 29378 Sep 12:05 test01.gz

Decompression: Gunzip compressed files, delete compressed files

[Email protected] test]# gunzip test01.gz [[email protected] test]# lltotal 192-RW-------. 1 root root 193746 Sep 12:05 test01

Preserve original file compression: Gzip-c File > Compressed file

[Email protected] test]# gzip-c test01 > Test02.gz[[email protected] test]# lltotal 224-RW-------. 1 root root 193746 Sep 12:05 test01-rw-r--r--. 1 root root 29378 Sep 13:24 test02.gz

View files Zcat compressed files directly within a compressed package

[Email protected] test]# Zcat test02.gz | Less

Bzip2

File suffix: bz2

Compress: bzip2 file, delete original file

Unzip: Bunzip2 compressed file, will delete compressed file

Preserve original file compression: Bzip2-k original file

[Email protected] test]# bzip2-k test02 [[email protected] test]# lltotal 212-rw-r--r--. 1 root root 193746 Sep 13:24 test02-rw-r--r--. 1 root root 19565 Sep 13:24 test02.bz2

To view files directly within a compressed package: Bzcat Compressed files

Xz

File suffix: xz

Compress: XZ file will delete the original file

Unzip: Unxz compressed file, will delete compressed file

Preserve original file compression: Xz-k source file

To view files directly within a compressed package: Xzcat Compressed files

The compression ratios of these commands are

Xz>bzip2>gzip

Directory Compression zip

Special usage: 1. Need to make self-made compressed file, 2 compressed after the original file will not be deleted 3 can be individually compressed files

Format: Zip compressed file. zip Original file

[Email protected] test]# zip test02.zip test02 adding:test02 (deflated 85%) [[email protected] test]# lltotal 244-rw-r-- R--. 1 root root 193746 Sep 13:24 test02-rw-r--r--. 1 root root 19565 Sep 13:24 test02.bz2-rw-r--r--. 1 root root 29515 Sep 13:32 test02.zip

To compress a directory, you need to specify all files

[[email protected] tmp]# zip test.zip test/* adding:test/test02 (deflated 85%) adding:test/test02.bz2 (deflated 3) a Dding:test/test02.zip (stored 0%)

Unzip: Unzip compressed document. zip, can only extract to the current directory

[Email protected] test02]# unzip Test.zipArchive:test.zip inflating:test/test02 inflating:test/test02. bz2 Extracting:test/test02.zip [[email protected] test02]# ll test/total 244-rw-r--r--. 1 root root 193746 Sep 13:24 test02-rw-r--r--. 1 root root 19565 Sep 13:24 test02.bz2-rw-r--r--. 1 root root 29515 Sep 13:32 test02.zip

Archive

Create an archive

Format: Tar CF archive file. Tar all folders or files to be archived

Do not like zip, specify all files in directory

[Email protected] test02]# TAR-CF Testtar.tar test/dir/

Expand archive to current directory, do not delete compressed files

Tar xf tar file

[Email protected] test02]# TAR-XF Testtar.tar

View files within an archive

TAR-TF tar file

[Email protected] test02]# TAR-TF testtar.tartest/test/test02.ziptest/test02test/test02.bz2dir/

Archive post-Compression call

Compress and Archive

Format: TAR-ZCF file. tar.gz file

-Z can replace other compression format, suffix should also have corresponding modification

-z:gzip,-J:BZIP2,-J:XZ

[Email protected] test02]# TAR-ZCF test.tar.gz test/[[email protected] test02]# ll test.tar.gz-rw-r--r--. 1 root root 78836 Sep 13:54 test.tar.gz

Unzip files that have been archived and compressed, without concern for the format compression

T-format AR XF compressed and archived files

[Email protected] test02]# TAR-XF test.tar.gz

Linux Compression Archive Summary