What is :wq?
Keystrokes popularized from the text editor VIM/VI. :wq is a (case-sensitive) combination of keystrokes popular among Linux programmers that will save the file and then exit the program. Very popular among forum members as a way of say "I'm done" or "Finished" after making a statement.
Everyone in this thread has an IQ that has to be at least under 40. Please grow up. no questions.