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When backspace doesn’t work to erase characters, we can use _____

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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-u

The 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

1 Answer

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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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