Can't Type Tilde character in Mac OS X

"Don't know if you are still reading this but if you download a program called Ukelele, you can make custom keyboard maps.

Then you need to put the keyboard map into ~/Library/Keyboard Layouts/, log off and then back in.

Once you have done this you can choose your custom keyboard layout and you will be able to use the ~ key without any problem (I'm using a Logitech illuminated keyboard using the default Logitech-UK keymap that comes with Ukelele and everything works)."

"If someone else is still interested in how to swap the § key with ~, I use Karabiner to do that and it's pretty easy to use. Just look for that option which is included in the default ones among others.

It can also be used to remap other keys if you want. For example, you can use hjkl keys to emulate the arrow keys (vim users will love it)."

"With Karabiner-Elements, it can be done by swapping non_us_backslash and grave_accent_and_tilde keys like so:

I needed this setup for my German keyboard which use with both English and German layout."

"On a Mac, tilde can be obtained using the key combination Alt+5.

Let me stress that Alt+5 returns tilde ~, whereas Alt+n returns tilde as character apice ˜."

"What characters you get by typing with ⌥ key, ⌃, or combination of the two (there's also ⇧, remember) depends on which language keyboard you use.

To find out all characters on your keyboard enable Keyboard & Character Viewer in Input Sources inside Language & Text.

With U.S. keyboard type ⇧` (near the left Shift button)."