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We invite you to give it a shot and tell us how it went. Search parameters can be combined in order to identify files that match highly complex criteria, filtering noise and focusing on threats that are relevant. We went further and compared Pigz with Gzip and found out that Pigz is the better of the two in terms of speed of both compression and decompression. We have covered the pigz command-line tool and showed you how you can compress and decompress files. $ man pigzįurthermore, run the command below to view all the options available for use with pigz command.

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In particular, you can download Ubuntu ISO images from. By going through the list, youll often find a small number that do.

Fortunately, HTTP mirrors occasionally support HTTPS as well. This implies that the Pigz command-line tool is much faster than the Gzip toolįor more details on the usage of pigz command, visit the man pages. Unfortunately, the current official mirrors for Ubuntu ISOs are http, ftp, and rsync only. Here are the results: Gzip Compression $ time gzip Ĭheck Gzip Compression Time Pigz Compression $ time pigz Ĭheck Pigz Compression Time Gzip Decompression $ time gzip -d Ĭheck Gzip Decompression Time Pigz Decompression $ time unpigz įrom the comparison, we can clearly see that compression and decompression times for Pigz are much shorter than Gzip. We went a bit further and pitted Pigz against Gzip tool. Using our compressed ISO file, the command will be: $ pigz -d ĭecompress Files in Linux Comparison between Pigz vs Gzip Now click on the Start button given on the VirtualBox top menu. Browse to the downloaded Ubuntu 19.10 ISO file and select that. Again on the CD icon that has given under the Attributes and selects Choose Virtual Optical Disk File. To decompress a file or directory using pigz, use the -d option or the unpigz command. Click on the Storage and Empty CD drive under the Storage Device. In this example, below, we have used the best compression (denoted by -9) with 4 processors (-p4) while retaining the original file (-k). You can specify the number of cores to be used using the -p option.

We mentioned earlier that the pigz utility tool uses multiple cores & processors when compressing files.

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To compress a directory, use the -use-compress-program argument as shown: $ tar -use-compress-program="pigz -k " -cf dir1Ĭompress a Directory in Linux How to Limit the Number of Processors While Compressing

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As a workaround, pigz is used in conjunction with tar command to zip directories.

1 – Fastest but offers the least compression.įor example, to compress the file with the best compression level, execute: $ pigz -9 īy itself, Pigz does not have options to compress a folder, it only compresses single files.

The following compression levels are supported: To check the contents of the compressed file, including the statistics on the compression ratio achieved use the -l option with pigz command: $ pigz -l įrom the output, you not only get to see the contents of the zipped file but also the percentage of compression which in this case is 1.9%.Īdditionally, you can use various compression levels that exist from 1 to 9. Check Content of Compressed File in Linux $ pigz -k įrom the output, we can clearly see that the original file has been retained even after compression. To retain the original file after compression, run use the -k option as shown. However, the command deletes the original file upon compression as you might have noticed.

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