You are editing a file in vi over a serial console whose arrow keys produce escape sequences vi does not interpret. In command mode, which key moves the cursor down one line?
LPIC-1 Exam 101-500, objective 103. GNU and Unix commands easy
Machine-checked — no person has signed for it. This question was read against the source cited below by an automated pass, which found no contradiction. That is a weaker claim than it sounds: the same kind of process wrote the question, so it can confirm its own mistake.
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How these questions are written — where each question comes from, what the verification ledger records, and what happens when one is found wrong.
The options
Not correct h
Wrong. `h` moves one character to the left; it is the leftmost of the four movement keys, which is a useful way to remember it.
Correct j
Correct. `j` moves down one line. `k` is its opposite and moves up one line.
Not correct k
Wrong. `k` moves up one line.
Not correct l
Wrong. `l` moves one character to the right.
Why
vi's four movement keys sit under the right hand in home position and read left to right as h, j, k, l: left, down, up, right. They work in command mode only, which is why a stray keystroke while in insert mode inserts the letter instead of moving. They also accept a count prefix, so `5j` moves down five lines.
Where this comes from
- Cited
- manual page vi(1p)
Practise this
Reading one question is not practice. The trainer will draw a short set from objective 103 and space the ones you get wrong.
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