How to use Inno Setup scripting to append to a text file?

Question

How can I append text to a file?

Answer 1

You can use the SaveStringToFile() function to append text to a file.

Answer 2

fileName := ExpandConstant('{pf}\{#MyAppName}\batch.bat');
SetArrayLength(lines, 3);
lines[0] := 'echo hello';
lines[1] := 'pause';
lines[2] := 'exit';
Result := SaveStringsToFile(filename,lines,true);