The page you provided mentions
Extract the contents of the compressed file you downloaded (.zip or .tar.gz).
The â.tar.gzâ in that line is reference to a tarball, the tar or tarball being compressed with gzip
thus .tar.gz. Itâs just an older (1979) form of compressing files/directories for movement to tape than zip (1989) which does the same thing.
You donât need to apologize for lack of knowedge, we all start somewhere.
When I clicked to download, I got the tarball (SimulIDE_0.3.12-SR8_Lin64.tar.gz)
I expanded it and looked to see
guiverc@d960-ubu2:~/Downloads$ file SimulIDE_0.3.12-SR8_Lin64
SimulIDE_0.3.12-SR8_Lin64: directory
guiverc@d960-ubu2:~$ cd Downloads/SimulIDE_0.3.12-SR8_Lin64/
/SimulIDE_0.3.12-SR8_Lin64$ ls -lah
total 0
drwxrwxr-x 4 guiverc guiverc 0 Aug 23 11:32 .
drwxr-xr-x 12 guiverc guiverc 20K Aug 23 11:32 ..
drwxrwxr-x 2 guiverc guiverc 0 Apr 4 14:33 bin
drwxrwxr-x 4 guiverc guiverc 0 Apr 4 14:33 share
guiverc@d960-ubu2:~/Downloads/SimulIDE_0.3.12-SR8_Lin64$ ls bin
simulide
guiverc@d960-ubu2:~/Downloads/SimulIDE_0.3.12-SR8_Lin64$ bin/simulide
bin/simulide: error while loading shared libraries: libQt5SerialPort.so.5: cannot open shared object file: No such file or directory
The error I get though is prepared for on the page you provided though, as it reports
List of runtime dependencies is:
âŚ
and provides a command to deal with that. I had a look, and my system had all requirements already installed except for that one
FYI: If it looks strange how I space out before my actual commands, I do that for commands I donât want stored in my command history
. The extra commands such as use of file
were used for your benefit (ie. exploration; as I could see it was a directory during expansion)
Discover is the KDE Software Store, the KDE equivalent of GNOME Software. Itâs included with modern Lubuntu (ie. 18.10 & later).
Your results will differ to me, as my Lubuntu is groovy (what will become 20.10), thus is LXQt (Qt being Qt5) and thus the Qt dependencies already existing (except the one). In contrast Lubuntu 18.04 uses LXDE which is GTK2, meaning you wonât have those dependencies, plus your system will use more memory to run them (as itâll need the GTK2 libraries used by your desktop to be in memory, plus Qt5 libraries used by software). If your box is RAM limited, you may suffer a performance hit.