05 _ packaging and compression, 05 _ packaging and Compression

05 _ packaging and compression, 05 _ packaging and Compression

Note:

This blog is mainly about linux's most basic compression, decompression, and packaging operations)

1. Common compression commands 1. compress (*. Z)

The old compression software can be replaced by gzip

Compress [-rcv] file or directory

Uncompress file. Z

-R: the files in the directory are compressed together.

-C: Output compressed data to the screen

-V: displays the compressed file information and file name changes during compression.

Compress filename> filename. back. ZCompress and save the original file

 

2. gzip (. * gz), zcat

Uncompress, zip, and gzip files

Gzip [-cdtv #] filename

-C: output the compressed data to the screen and process it through data stream redirection.

-D: Extract

-T: Check the consistency of compressed files.

-V: Display File compression ratio

-#: Compression level.-1 is the fastest, but the compression ratio is the worst.-9 is the slowest, but the compression ratio is the best. The default value is 6.

Zcat filename.gz

Read compressed file content

Gzip-v 01_base.txt display compression ratio

Zcat 01_base.txt.gz displays the File Content

Gzip-d 01_base.txt.gz Extract

Gzip-9-c 01_base.txt> 01_base.txt.gz keep the original file

 

3.bzip2, bzcat

Bzip2 [-cdkzv #] filename

Bzcat filename.bz2

-C: output the data generated during the compression process to the screen.

-D: extract parameters.

-K: Retain the original file

-Z: Compression Parameters

-V: displays compression ratio (original/post) and other information.

-#: Same as gzip

Bzip2-z 01_base.txt

Bzip2-d 01_base.txt.bzip2

Zcat 01_base.txt.bzip2

 

Ii. Packaging: tar1.tar

Tar [-j |-z] [cv] [-f newfile] filename packaging and Compression

Tar [-j |-z] [TV] [-f newfile] View File Name

Tar [-j |-z] [xv] [-f newfile] [-C Directory] decompress

-C: Create a new package file and use v to view the package file name.

-T: view the file names in the package.

-X: Extract

-J: Use bzip2 for compression and decompression

-Z: Using gzip

-P: retains the original permissions and attributes of backup data. It is often used to back up important configuration files.

-P: retain the absolute path, that is, the root directory, which is removed by default.

-- Exclude = FILE: Do not package the FILE during packaging.

 

Compression: files or directories to be compressed by tar-jcv-f filename.tar.bz2

Query: tar-jtv-f filename.tar.bz2 | grep "file"

Decompress: tar-jxv-f filename.tar.bz2-C to decompress the Directory

Tar-jxv-f filename.tar.bz2 open file name to unbind a single file

Tar-jcv-f docum.tar.bzip2 docum Compression

View tar-jtv-f extension .tar.bzip2

Tar-jxv-f pai.tar.bzip2-C ../decompress the package to the upper-layer folder.

Tar-jxv-f 2.16.tar.bzip2 docum/01_base.txt extract the 01_base.txt File

Tar-jcv-f unzip .tar.bzip2 -- exclude = docum/01_base.txt docum/unzip folder in addition to 01_base.txt package Compression

2.tar File

Tarfile: Only packageTar-cv-f file.tar

Tarball: compress tar-jcv-f file.tar.bzip2

Tar-cv-f/dev/st0/home/root/etc package the/home/root/etc folder to the tape drive