Linux Tutorials - Herong's Tutorial Examples - v5.39, by Dr. Herong Yang
"gzip/gunzip" - Compressed *.gz Files
This section provides a tutorial example on how to use 'gzip' and 'gunzip' commands to compress large files and restore them later. Compressed files will have the *.gz file name extension.
If you have a large file, you may want to compress it with the "gzip" utility to save storage space.
1. Compress a file with the "compress" command, which uses the Lempel-Ziv algorithm. The original file is replaced with the compressed version and renamed to the same name plus the extension .gz.
herong$ cp history-of-linux.txt history-of-linux-bck.txt herong$ gzip history-of-linux.txt herong$ ls -l history* -rw-r--r-- 1 herong staff 1444 history-of-linux-bck.txt -rw-r--r-- 1 herong staff 834 history-of-linux.txt.gz
2. Restore a compressed file with the "gunzip" command. The compressed file is replaced with the restored version and renamed to the original name without the extension .gz.
herong$ gunzip history-of-linux.txt.gz herong$ ls -l history* -rw-r--r-- 1 herong staff 1444 history-of-linux-bck.txt -rw-r--r-- 1 herong staff 1444 history-of-linux.txt
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