Exist
File management function.
The Exist function checks for the existence of the specified file.
Usage
Before processing actions on a file, it is a good practise to test first if the file exists. You will not get an error if in some circumstances, the file does not exist.
Syntax
ret=Exist(<filename>)
Parameters
<filename>, string, name of the file to test. If no path is included in <filename>, the current directory is searched.
Return value
ret, numeric return code; if the file exists, the return code is set to 1, otherwise 0.
See also
Example
a=Exist(WinDir$()+"\sol.exe").
If a=1 then
' if sol.exe exists in Windows directory, run it.
shell("sol.exe")
endif