Compression and decompression commands

Linux Basic commands

1.1 Compression and decompression commands

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One 、zip

zip The function of the command is to compress files , The decompression command is unzip. adopt zip The command can package files into .zip Compressed package of format , It will contain the name of the file 、 route 、 Creation time 、 Last modification time and other information .

Use format ：

zip [ Options ]  Package name   Source file or source directory list 

Common parameters ：

Parameters	significance
-r	Recursively compress directories , All files and subdirectories under the directory will be compressed .
-m	After compressing the file , Delete the original file , It's equivalent to moving a file into a compressed file .
-v	Display detailed compression process information .
-q	The execution process of the command is not displayed during compression .
-z	Annotate the compressed file
-u	Update compressed file , That is, add a new file to the compressed file .
-d	Update the files in the compressed package
-n< The ending string >	Do not compress files with a specific suffix string
- Compression level	The compression level is from 1~9 The number of ,-1 Represents faster compression ,-9 Represents better compression .

for example , Press the following files into a package ：

train.txt  train1.txt  train2.txt

zip train.txt.zip *.txt

give the result as follows ：

train.txt  train.txt.zip  train1.txt  train2.txt

decompression zip file , First delete the previously compressed files , Then decompress , give the result as follows ：

 rm *.txt
 unzip train.txt.zip
 ls
 train.txt  train.txt.zip  train1.txt  train2.txt

Two 、gzip

gzip Is a widely used compression program , After it compresses the file , There will be many places after its name “.gz” Extension .

Use format ：

gzip [ Option parameters ][-s < Compress suffix strings >] [ file / Catalog ]

Common parameters ：

Parameters	significance
-d	Unpack the compressed file
-v	Display during execution of instructions
-l	List information about compressed files
-r	Recursive processing , Process all files and subdirectories under the specified directory
-A	Add files to an existing backup file
-B	Set block size
-c	Output the extracted file to the standard output device

for example , Press the following files into a package ：

train.txt  train1.txt  train2.txt
gzip *.txt

give the result as follows ：

train.txt.gz  train1.txt.gz  train2.txt.gz

decompression ：

gzip -d *.gz
ls
train.txt  train1.txt  train2.txt

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summary

Compression and decompression tools zip and gzip Usage of