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Unix - Engineering

Q1:

Which command will be used with vi editor to insert text to left of cursor?

A s

B S

C a

D i

E None of the above

ANS:D - i

i- insert text before cursor, until <Esc> hit.
I- insert text at beginning of current line, until <Esc> hit.
a- append text after cursor, until <Esc> hit.
A-append text to end of current line, until <Esc> hit.
o- open and put text in a new line below current line, until <Esc> hit.
O- open and put text in a new line above current line, until <Esc> hi.