There's a few scripts out there, but you'll always be better off with linux

Windex and newspaper always did the trick for me.

They still make newspapers?

first you wipe of the worst grime with one of those squeegees that has a sponge on the back side. try to catch dribble with old cloth or so. (some will spill if you're not a super pro. wipe it off the floor later.)

then you use a chamois leather (also available in synthetic, so it can be vegan) with glass cleaner solution that contains spirit (aka ethyl alcohol) from a spray bottle. you spray it on, then rub with the chamois. the glass cleaner kinda evaporates after the fine dirt gets into the chamois, so no residue will be left on the glass.

Water and microfiber cloth always worked best for us.

People have mentioned these separately but I just want to say,

alcohol + microfiber cloth

Huh, never had a problem with that. You gotta dry off the water after you've wiped them, to avoid lime spots from forming. Alternatively, you can use alcohol to wipe them down, which will dissipate without leaving spots.

But yeah, that's about the whole secret. Just a cloth with water and then wiping all the surfaces of the window has always worked well enough for me. But I guess, your mileage might vary depending on what kind of grime is in the air where you live...