Linux gzip command details how to use Linux gzip command

The pnux gzip command is used to compress files.

Gzip is a widely used compression program. After a file is compressed, its name will be followed by an extension of ". gz.

Syntax

Gzip [-acdfhlLnNqrtvV] [-S <compressed character string>] [-<compression efficiency>] [-- best/fast] [file...] or gzip [-acdfhlLnNqrtvV] [-S <compressed character string>] [-<compression efficiency>] [-- best/fast] [Directory]

Parameters:

-A or -- ascii uses the ASCII text mode.

-C or -- stdout or -- to-stdout outputs the compressed file to the standard output device, without changing the original file.

-D or -- decompress or ---- uncompress to uncompress the compressed file.

-F or -- force forcibly compresses the file. Ignore whether the file name or hard connection exists and whether the file is signed.

-H or -- help online help.

-L or -- pst lists information about compressed files.

-L or -- pcense displays version and copyright information.

-N or -- no-name: the original file name and time stamp are not saved.

-N or -- name: the original file name and time stamp are saved when the file is compressed.

-Q or -- quiet does not display warning information.

-R or -- recursive processing: All files and subdirectories under the specified directory are processed together.

-S <compression character string> or ---- suffix <compression character string> to change the compression character string.

-T or -- test to test whether the compressed file is correct.

-V or -- verbose displays the command execution process.

-V or -- version displays version information.

-<Compression efficiency>

The compression efficiency is a value between 1 and 9. The preset value is "6". The larger the value, the higher the compression efficiency.

-- Best this parameter has the same effect as the specified "-9" parameter.

-- Fast this parameter has the same effect as the specified "-1" parameter.

Instance

Compressed file

[Root@w3cschool.cc a] # ls // display the current directory file

A. c B. h d. cpp

[Root@w3cschool.cc a] # gzip * // compress all files in the directory

[Root@w3cschool.cc a] # ls // display the current directory file

A.c.gzb.h.gzd.cpp.gz

[Root@w3cschool.cc a] #

Example 1: list detailed information

[Root@w3cschool.cc a] # gzip-dv * // Unzip the file and list details

A.c.gz: 0.0% -- replaced with a. c

B .h.gz: 0.0% -- replaced with B .H

D.cpp.gz: 0.0% -- replaced with d. cpp

[Root@w3cschool.cc a] #

Example 1 shows the compressed file information.

[Root@w3cschool.cc a] # gzip-l *

Compressed uncompressed ratio uncompressed_name

24 0 0.0% a. c

24 0 0.0% B. h

26, 0, 0.0%, d. cpp