Windows has a
character map utility. Is there one in Linux? I'm using KDE; but I'm sure that doesn't matter.
Check out this summary: http://fsymbols.com/character-maps/linux/
It lists different utilities for GNOME, KDE or other environments:
KCharSelect, a character map that lets you choose virtually any possible character and preview them in any font on your system, is available for KDE desktops.
You can open it by going to Applications > Utilities > Character Selector.
If you find it's not installed, then open your Linux package manager and search for the