Ubuntu Tutorials - Herong's Tutorial Examples

∟Files and Directories

∟"compress/uncompress" - Compressed *.Z Files

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

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

1. Compress a file with the "compress" command, which uses the adaptive Lempel-Ziv algorithm. The original file is replaced with the compressed version and renamed to the same name plus the extension .Z. 

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

herong$ compress 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   963  history-of-Linux.txt.Z

2. Restore a compressed file with the "uncompress" command. The compressed file is replaced with the restored version and renamed to the same name without the extension .Z. 

herong$ uncompress history-of-Linux.txt.Z

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 Ubuntu Systems

 GNOME - Desktop Interface and Environment

 Shell - The Command-Line Interpreter

 Process Management

 Memory 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

 "rar" and "unrar" - Roshal Archive Files

 APT (Advanced Package Tool)

 Network Connection on Ubuntu

 Internet Networking Tools

 SSH Protocol and ssh/scp Commands

 Administrative Tasks

 References

 Full Version in PDF/EPUB