!!!Pack and unpack in 7z format with a Mac
First open the Terminal app and type in:\\
brew install p7zip\\
The program itself is called: '7z'\\
In Terminal you can type in:\\
man 7z\\
for further information. Please see below for a copy of the info, too.\\
For a smart handling, please type in:\\
cd <path of the folder, you want to work with>\\
for example:\\
cd folder\\
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:\\
7z a file.7z <path of the file>\\
file.7z is the name of the archive which will be created in 7z format with the suffix 7z.\\
<path of the file> must be the path on your Mac leading to the file and 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:\\
7z x <path of the archive.7z>\\
The program will then unpack the file 'archive.7z' in the same folder.

- 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

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

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

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

       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.

       a      Add

       d      Delete

       e      Extract

       l      List

       t      Test

       u      Update

       x      eXtract with full paths

              Include archives