Siege Lion on the Way (iii) Linux (27)---Compression and packaging common compression commands

As mentioned earlier, the suffix name in Linux has no special meaning, it is generally used as the identity of different file types. The following is a description of the suffix associated with packaging and compression:

*.z:compress Program zip file

*.gz:gzip Program zip file

*.BZ2:BZIP2 Compressed Files

*.tar:tar packaged, uncompressed

*.tar.gz:tar packaged, Gzip compressed

*.tar.bz2:tar packaged, bzip2 compressed

Files that are typically packaged or compressed are distinguished by suffix names.

First, Compress: This command is older, CentOS is not installed by default, you can use gzip instead.

Ii. gzip, Zcat:zcat for reading plain text files compressed by gzip

Command format: gzip [-cdtv#] File name

Parameter description:

-C: Output compressed data to the screen

-D: decompressed parameters

-T: can be used to check the consistency of a compressed file.

-V: can display the original file/compressed file compression ratio and other information

-#: Compression level, 1 fastest, but low compression ratio, 9 slowest, but compression ratio; default is-6;

Example:

Gzip-v Man.config; <== will generate the man.config.gz file and delete the Man.config file.

Gzip-d man.config.gz; <== unzip the file and delete the man.config.gz

Gzip-9-C man.config > man.config.gz; <== Keep the original file

Zcat man.config.gz;

Third, bzip2, Bzcat:

BZIP2 offers a better compression ratio than gzip, with a specific usage similar to gzip.

Command format: bzip2 [-ckdzv#] File name

Parameter description:

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

-D: Decompression parameters

-K: Keep the original file

-Z: Compressed parameters

-V: Displays information such as the compression ratio of the original file/compressed file

-#: Consistent with gzip.

Example:

Bzip2-z Man.fig; <== man.config into man.config.bz2;

Bzcat man.config.gz2;

Bzip2-d man.config.bz2; <== Decompression

Bzip2-9-C man.config > man.config.bz2; <==