"xz/unxz" - Compressed *.xz or *.lzma Files

This section provides a tutorial example on how to use 'xz' and 'unxz' commands to compress large files and restore them later. Compressed files will have the *.xz file name extension.

If you have a large file, you may want to compress it with the "xz" utility to save storage space.

1. Compress a file with the "xz" command, which uses the LZMA2 algorithm. The original file is replaced with the compressed version and renamed to the same name plus the extension .xz.

herong$ cp history-of-linux.txt history-of-linux-bck.txt

herong$ xz 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   916  history-of-linux.txt.xz

2. Restore a compressed file with the "unxz" command. The compressed file is replaced with the restored version and renamed to the original name without the extension .xz.

herong$ unxz history-of-linux.txt.xz

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

Table of Contents

 About This Book

 Introduction to Linux Systems

 Cockpit - Web Portal for Administrator

 Process Management

Files and Directories

 "find" - Search for Files

 "more", "head" and "cat" - Read Files

 "split" and "cat" - Split and Join Files

 Truncate Log Files

 "compress/uncompress" - Compressed *.Z Files

 "gzip/gunzip" - Compressed *.gz Files

"xz/unxz" - Compressed *.xz or *.lzma Files

 "tar -c" and "tar -x" - Create and Extract Archive Files

 "zip" and "unzip" - Create and Extract ZIP Files

 "Operation not permitted" Error on macOS

 Users and Groups

 File Systems

 Block Devices and Partitions

 LVM (Logical Volume Manager)

 Installing CentOS

 SELinux - Security-Enhanced Linux

 Network Connection on CentOS

 Software Package Manager on CentOS - DNF and YUM

 Running Apache Web Server (httpd) on Linux Systems

 Running PHP Scripts on Linux Systems

 Running MySQL Database Server on Linux Systems

 Running Python Scripts on Linux Systems

 vsftpd - Very Secure FTP Daemon

 Postfix - Mail Transport Agent (MTA)

 Dovecot - IMAP and POP3 Server

 Email Client Tools - Mail User Agents (MUA)

 LDAP (Lightweight Directory Access Protocol)

 GCC - C/C++ Compiler

 Graphics Environments on Linux

 Conda - Environment and Package Manager

 Tools and Utilities

 Administrative Tasks

 References

 Full Version in PDF/EPUB