System paths where executable files can be found.
Default executable extensions for the current system. On Windows this functions examines PATHEXT environment variable to get the list of executables extensions. Fallbacks to .exe;.com;.bat;.cmd if PATHEXT does not list .exe extension. On other systems it always returns empty range.
Find executable by fileName in the paths.
ditto, but on Windows when fileName extension is omitted, executable extensions are appended during search.
ditto, but searches in system paths, determined by PATH environment variable. On Windows when fileName extension is omitted, executable extensions are appended during search.
Searching for executable files in system paths.