Hello Jürgen,
1. Yes, one can in principle run any .exe present in the Cygwin installation.
E.g. sort.exe, uniq.exe, apl.exe, ...
2. For Microsoft Windows they are thus business as usual executables.
3. So that is what I always do:
a. or I run it via Microsoft cmd.exe,
b. or e.g. via (my default) JPSoft tcc.exe
c. or using the Dos() API
...
4. So I never run it using the Cygwin bash command prompt thus, as not running it via Cygwin Bash is the simplest solution in general.
Thanks
with friendly greetings
Knud van Eeden