How to install and use pigz commands in Linux

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Pigz command can be used to extract files, the most important thing is to support multi-threaded parallel processing, decompression is faster than gzip. Pigz time is 60% faster than gzip, while CPU consumption is several times that of gzip. Of course, the CPU utilization rate of pigz is also 100%.

Environment

Centos7 RAM:2GB, CPU: 4vcpus

Install # install epel extension source [root@localhost ~] # wget-O / etc/yum.repos.d/epel-7.repo http://mirrors.aliyun.com/repo/epel-7.repo[root@localhost ~] # yum makecache# install pigz [root @ localhost ~] # yum-y install pigz how to compress files

The following are common parameters:

-p n: the number of cores used when compressing. By default, all cores are used-k: keep the source file after compression-l: list the compressed input. -6: default compression level-9: highest compression ratio, but slow speed-1: lowest compression ratio, fastest

For example: compress the FreeNAS-11.2-U7.iso file. If you need to keep the source file, you can add the-k parameter:

[root@localhost] # pigz-k FreeNAS-11.2-U7.iso

You can use the-l option to view the compression ratio of the compressed file:

[root@localhost ~] # pigz-l FreeNAS-11.2-U7.iso.gzcompressed original reduced name576426218 602378240 4.3% FreeNAS-11.2-U7.iso

How to compress a directory

Pigz has no option to compress folders, you can only compress individual files. Pigz can be used with the tar command to compress folders.

[root@localhost ~] # tar-cvf-/ var/log | pigz-k > logs.tar.gz

Check the compression information:

[root@localhost ~] # pigz-l logs.tar.gzcompressed original reduced name 698038 9093120 92.3% logs.tar [root@localhost ~] #

How to extract a file

Extract a single file, decompression method:

[root@localhost test] # unpigz-d FreeNAS-11.2-U7.iso.gz# if you need to keep the source zip file, add the-k parameter [root@localhost test] # pigz-k-d FreeNAS-11.2-U7.iso.gz

Decompress a directory, decompression method:

[root@localhost test] # tar-xf logs.tar.gz above is the content of this article on "how to install and use pigz commands in Linux". I believe you all have some understanding. I hope the content shared by the editor will be helpful to you. If you want to know more about it, please follow the industry information channel.