1.

Which control unlocks the keyboard?(a) ctrl-u(b) ctrl-c(c) ctrl-z(d) ctrl-qThe question was posed to me during an interview.This question is from General Purpose Commands in division The Unix Architecture & General Purpose Utilities of Unix

Answer»

Correct choice is (d) ctrl-q

Easiest explanation: ctrl-q RESUMES the scrolling of screen output and UNLOCKS the KEYBOARD. Ctrl-h is used to erase character by character when BACKSPACE doesn’t work while and Ctrl-c interrupts the program and bring back the prompt.



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