!!!Pack and unpack in 7z format with a Mac
First open the Terminal app and type in:\\
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brew install p7zip\\
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The program itself is called: '7z'\\
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In Terminal you can type in:\\
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man 7z\\
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for further information. Please see below for a copy of the info, too.\\
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For a smart handling, please type in:\\
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cd <path of the folder, you want to work with>\\
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for example:\\
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cd folder\\
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Even more smart is to just type in 'cd ' (please don't forget the blank after the letter d and then just drag & drop the folder with the archive inside to the actual cursor position! That saves you a lot of typing! :-)\\

!!Example for packing
For packing a file or an archive, please type in:\\
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7z a file.7z <path of the file>\\
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file.7z is the name of the archive which will be created in 7z format with the suffix 7z.\\
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<path of the file> must be the path on your Mac leading to the file and the file itself at the end, of course. The same is true when dealing with a folder.

!!Example for unpacking
For unpacking a file or an archive, please type in:\\
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7z x <path of the archive.7z>\\
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The program will then unpack the file 'archive.7z' in the same folder.

!!Credits
- Tomasz 'Kr0tki' Krasuski for telling us about the best packer available
- Carsten Strotmann for sharing the knowledge on how to do it on a Mac as smart as possible

!!References
* [https://www.7-zip.org/download.html]
* [https://sourceforge.net/projects/sevenzip/]

!!Infos from the Terminal app
NAME
       7z - A file archiver with highest compression ratio

SYNOPSIS
       7z [adeltux] [-] [SWITCH] <ARCHIVE_NAME> <ARGUMENTS>...

DESCRIPTION
       7-Zip  is a file archiver with the highest compression ratio. The program supports 7z (that implements LZMA com-
       pression algorithm), ZIP, CAB, ARJ, GZIP, BZIP2, TAR, CPIO, RPM and DEB formats. Compression ratio in the new 7z
       format is 30-50% better than ratio in ZIP format.

       7z uses plugins to handle archives.

FUNCTION LETTERS
       a      Add

       d      Delete

       e      Extract

       l      List

       t      Test

       u      Update

       x      eXtract with full paths

SWITCHES
       -ai[r[-|0]]{@listfile|!wildcard}
              Include archives

       -ax[r[-|0]]{@listfile|!wildcard}
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