How to find the location where a GNU application is stored?
Solution 1:
The package is tint2, so use apt-file (install if necessary) to list its contents:
apt-file list tint2
We see /usr/bin/tint2, so that is in your PATH and should run with just its name.
The locate command is another way to find installed things.
These days, for 20.04 and later, /bin and /usr/bin are really the same directory, so you should have found it at /bin (not backslash) too.