Common Linux commands (5)-compression and decompression commands

1. Command name: Gzip

Execution permission: All Users

Function Description: compress a file.

Syntax: gzip option [file]

Compressed Format:. GZ

Gzip can only compress files, but cannot compress directories;

The original file is not retained after gzip compression.

 
[Root @ localhost ABC] # lsafile issue. hard issue. soft Prem test [root @ localhost ABC] # gzip afile [root @ localhost ABC] # lsafile.gz issue. hard issue. soft Prem test [root @ localhost ABC] #
 

 

2. Command name: gunzip

Execution permission: All Users

Function Description: Decompress a compressed file in the. GZ format.

Syntax: gunzip option [compressed file]

 
[Root @ localhost ABC] # gunzip afile.gz [root @ localhost ABC] # lsafile issue. Hard issue. Soft Prem test [root @ localhost ABC] #
 

Or use: gzip-D to compress the file.

 
[Root @ localhost ABC] # lsafile.gz issue. hard issue. soft Prem test [root @ localhost ABC] # gzip-D afile.gz [root @ localhost ABC] # lsafile issue. hard issue. soft Prem test [root @ localhost ABC] #
 

 

3. Command name: Tar

Execution permission: All Users

Function Description: Package directory

Syntax: Tar [CVF] [Directory]

-C producer .tar package the file

-V: Show Details

-F: Specifies the compressed file name.

-Z package and compress

Compressed package format: .tar.gz

 
Package and compress the test directory [root @ localhost ABC] # tar-zcvf test.tar.gz testtest/[root @ localhost ABC] # lsafile issue. hard issue. soft Prem test test.tar.gz [root @ localhost ABC] # package the Adir directory first, then compress [root @ localhost ABC] # tar-CVF adir.tar adiradir/[root @ localhost ABC] # lsadir adir.tar afile issue. hard issue. soft Prem test test.tar.gz [root @ localhost ABC] # gzip adir.tar [root @ localhost ABC] # lsadir adir.tar.gz afile issue. hard issue. soft Prem test test.tar.gz [root @ localhost ABC] #
 

Use the tar command to decompress:

-X unpack the .tar File

-V: Show Details

-F: Specifies the file to be decompressed.

-Z Decompression

Decompress test.tar.gz [root @ localhost ABC] # lsadir.tar.gz afile issue. hard issue. soft Prem test.tar.gz [root @ localhost ABC] # tar-zxvf test.tar.gz test/[root @ localhost ABC] # lsadir.tar.gz afile issue. hard issue. soft Prem test test.tar.gz [root @ localhost ABC] # unpack adir.tar.gz [root @ localhost ABC] # lsadir.tar.gz afile issue. hard issue. soft Prem test test.tar.gz [root @ localhost ABC] # gunzip adir.tar.gz [root @ localhost ABC] # lsadir.tar afile issue. hard issue. soft Prem test test.tar.gz [root @ localhost ABC] # tar-xvf adir.tar
 

 

4. Command name: Zip

Execution permission: All Users

Function Description: compresses a file or directory.

Syntax: Zip [-R] [compressed file name] [file or directory]

-R compression directory

Compressed Format:. Zip

 
Compress the afile [root @ localhost ABC] # lsadir adir.tar afile issue. hard issue. soft Prem test test.tar.gz [root @ localhost ABC] # zip afile.zip afile adding: afile (stored 0%) [root @ localhost ABC] # lsadir afile issue. hard Prem test.tar.gzadir.tar afile.zip issue. soft test [root @ localhost ABC] # compress the test directory [root @ localhost ABC] # lsadir afile issue. hard Prem test.tar.gzadir.tar afile.zip issue. soft test [root @ localhost ABC] # zip-r test.zip test adding: Test/(stored 0%) [root @ localhost ABC] # lsadir afile issue. hard Prem test.tar.gzadir.tar afile.zip issue. soft test test.zip [root @ localhost ABC] #
 

 

5Command name: unzip

Execution permission: All Users

Function Description: Decompress a. ZIP file.

Syntax: unzip [compressed file]

 
Decompress test.zip [root @ localhost ABC] # unzip test.zip archive: test.zip creating: Test/[root @ localhost ABC] #
 

 

6Command name: Bzip2

Execution permission: All Users

Function Description: compress a file.

Syntax: Bzip2 [-K] [file]

-K: the original file is retained after the compressed file is generated

Compressed Format:. bz2

Only files can be compressed

Large compression ratio, suitable for compressing large files

 
Compress afile [root @ localhost ABC] # Bzip2-K afile [root @ localhost ABC] # lsadir afile afile.zip issue. soft test test.zipadir.tar afile.bz2 issue. hard Prem test.tar.gz [root @ localhost ABC] #
 

 

7Command name: bunzip2

Execution permission: All Users

Function Description: Decompress the file.

Syntax: bunzip2 [-K] [compressing files]

-K. decompress the package and keep the original file.

 
Decompress afile.bz2 [root @ localhost ABC] # bunzip2-K afile.bz2
 

 

8. view the file type command file

If you do not know the file type, you can use: File

 
[Root @ localhost ABC] # file/etc/sysconfig: Directory [root @ localhost ABC] #