Occasionally I'll need to find the password for a wifi network that I joined ages ago. Maybe it's because I'm meeting a friend at a coffee shop who needs the password, or I want to join from my phone, or I just want to be double-sure before telling someone else.
I had previously assumed the info would be hidden somewhere in Network Settings. No luck. After searching there, I eventually stumbled upon the quick/easy solution that I'll share here.
You'll probably need to provide system access, but then you should be all set.
Hope this quick-tip helps save you some frustration the next time you need to find a saved network password!