It is a little confusing, but I think I understand it well enough to help you.
DISCLAIMER: I looked through the files on WIndows, so I wasn't able to install or run it.
tar.gz file, I see another
.tar file. Opening that, I see an
.sh file, a
Chemcraft folder and a
Inside the ReadMe is this:
To run Chemcraft, write correct paths in the "Chemcraft.sh" file (path
to the library ".../Chemcraft/lib/" and to the executable file
Note that the Linux version of Chemcraft has some significant
disadvantages. We were unable to make it as efficient as the Windows
Please email to firstname.lastname@example.org if you find any problems
with installation or running of Chemcraft.
From that, I gather that the script needs to be edited to reflect where the
ChemCraft folder is. Obviously, to do that, you need to extract the
Once you do that, find the
Chemcraft.sh and double click it to edit.
Change the path in
KYLIX_BIN="/home/$USER/Chemcraft/Chemcraft/lib" to reflect the path to the
lib folder. For example, if you extracted to Downloads, it might be something like
/home/YOURUSERNAMEHERE/Downloads/Chemcraft/Chemcraft/lib. Of course, this might be different, and you'll have to figure that part out yourself.
Also edit the path in
/home/$USER/Chemcraft/Chemcraft/Chemcraft $1 to reflect where it should be. Follow the example above.
Save the file, then open a terminal.
chmod +x /path/to/Chemcraft.sh to make the script executable.
/path/to/Chemcraft.sh to run it.
By the way, this is the actual program, not something that gets installed. I recommend extracting the files to a somewhat permanent location, then editing the script to reflect that location.
If you want an easy way to run it, check out how to make a .desktop file.