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When backspace doesn’t work to erase characters, we can use _____(a) ctrl-f(b) ctrl-h(c) ctrl-c(d) ctrl-uThe question was posed to me in homework.This is a very interesting question from General Purpose Commands topic in portion The Unix Architecture & General Purpose Utilities of Unix

Answer»

The correct choice is (b) ctrl-H

Easiest explanation: Sometimes it may happen that BACKSPACE doesn’t work and whenever it is pressed, ^H is displayed on the terminal. To RESOLVE this problem, we can USE control key i.e. ctrl-H. Ctrl-u is used for killing a line altogether without executing it and Ctrl-c interrupts the program and bring back the prompt.



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