I think, this is one of the questions, new users are often afraid to ask, but if you don’t know the answer, it can drive you mad.
So: Thanks for asking:
In the following, d $ c always means: Your current working directory is d and you are issuing the command c.
. always stands for the current working directory. It’s an abbreviation, like ~ stands for your home directory, like /home/manuel
If you issue a command, your shell (i.e. your computer) needs to know where to find it.
One way of doing so, is by telling it, the app’s exact location, so, no matter where you are:
some_directory $ /snap/bin/notepadqq will always work.
In order to make things easier, you can abbreviate this, by using the dot .:
/snap $ ./bin/notepadqq will work, so will /snap/bin $ ./notepadqq
What will not work, is: /home/manuel $ ./snap/bin/notepadqq Why?
Because the dot . is an abbreviation for the current working directory, so the command, you issued was effectively: /home/manuel/snap/bin/notepadqq, but the app is not in this location. It has to fail.
Now, one more recommendation.
If you don’t tell your computer, where a program is located, it will always look in a list of directories, if it might be there. This list is called The Path.
Some typical directories in The Path are:
/usr/bin or /usr/local/bin.
Usually /snap/bin should be in there, too.
Check it out by typing echo $PATH and hitting Enter
In my case, I get
/home/mina/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/snap/bin
If your PATH already contains /snap/bin, you don’t need to tell your computer, where your app is located, just typing notepadqq, regardless of where you are, will always launch your app.
If your Path doesn’t contain /snap/bin, we’re going to change that now.
Please open your /home/manuel/.bashrc file with the editor of your choice, go to the end of the file and add a line: export PATH=“/snap/bin/:$PATH”
Save the file.
Now, after you restart your computer, you should be able to just type notepadqqand launch your app.
If you don’t want to wait, type source ~/.bashrc, hit Enter and it will also work.
This last command tells the shell to read its configuration file (which it usually only does at login).
I hope, I could help you a bit.