In Linux we use zip, gzip, bzip, etc for compression however, tar for archiving.

CREATE FILES AND FOLDERS FOR ARCHIVING AND COMPRESSIONCreate Directories,mkdir RHEL RHCSA Linux

Create file,seq 1000000 > File1.txt

ARCHIVING

USING TARTAR stands for Tape ARchive.

It is used to archive data.•It is not used to compress.•By not compressing and only archiving means - a bunch of files spread around the system can be grouped together in single file/folder for them to be easily moved around.

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There is NO SPACE SAVING! Using Tar.•Without a compression algorithm applied, Tar just archives. Use .tar extension on the file to be created.•We Un-Tar files - or extract/expand when and where needed to deploy.•

FACTS about TAR,

Achiving, Removing and Extracting using TarExample below to put Files and Folders to a common Tar file - Archive.tar,

No Space Saving - VerificationVerify File Size

FILE COMPRESSION & ARCHIVING04 August 2018 07:23 PM

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COMPRESSINGFiles can be Archived and then Compressed as separate steps; Or, can be combined as one step.

Gzip•Bzip•

Various Compression Algorithm/Utilities are available to archive this like,

COMPRESSION AS SEPARATE ACTION

Using Gzip

CompressFiles which are Archived above can be compressed as separate action as below.We use same archive tar file to compress,

ExtractExtract using Gunzip command to extract above created file back to original,

Using BZip2

CompressFiles which are Archived above can be compressed as separate action as below.We use same archive tar file to compress,

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ExtractExtract using Gunzip command to extract above created file back to original,

COMPRESSION AS WE ARCHIVE

Compress/Zip using TarUsing bzip for File Compression,tar -cvjf DesktopBackup.bz2 RHEL RHCSA Linux File1.txt

To ViewTo view content of Zipped file.tar -tvf DesktopBackup.bz2

Check SizeCheck file size of individual Files and Folders,du -h RHEL RHCSA Linux File1.txt

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Check file size of zipped file,du - h DesktopBackup.bz2

UnzipExtracts in present working directory.tar -xvjf DesktopBackup.bz2

Used switches-c to create-v for verbose (shows as compression happens)-z to use gzip compression -j to use bz2 compression-t to list the content-x to Extract Content

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