=====Tar and GZIP======
===== Compress and Zip =====
<code>tar -zcvf website.tar.gz /var/www</code>
  * -z : Compress archive using gzip program in Linux or Unix
  * -c : Create archive on Linux
  * -v : Verbose i.e display progress while creating archive
  * -f : Archive File name

=====Untar=====
<code>tar xfz foo.tar.gz</code>
To untar in verbose mode, add ''v'' to the list of arguments.

Remove the ''z'' if it is not a zipped tar
=====Untar to Specific Directory=====
<code>tar -xzf foo.tar.gz -C /tmp/foo/;</code>
=====Tar=====
To tar all *.txt files into foo.tar.gz
<code>tar cfz foo.tar.gz *.txt</code>
To tar without compressing, remove the <code>z</code> from the list of arguments.

=====Tar Directory=====
<code>tar cf foo.tar.gz some_directory/</code>

=====List Contents of Tar=====
<code>tar tvf foo.tar</code>
=====Gzip=====
To gzip a file
<code>gzip filename</code>
=====Uncompress .Z Files=====
<code>uncompress filename.tar.Z</code>
=====Install 7zip=====
You will need to have installed rpmforge repository on you computer.
<code>yum install p7zip</code>
You can then use 7zip with the command 7za
=====Compress with 7zip=====
adds all files from directory "dir1" to archive archive.7z using "ultra settings" 
<code>7za -t7z -m0=lzma -mx=9 -mfb=64 -md=32m -ms=on archive.7z dir1</code>
=====Uncompress with 7zip=====
<code>7za x zrchive.7z</code>