Moving around in the file

Last revision August 2, 2004

Table of Contents: Editor choices on Unix Characteristics, advantages, and disadvantages of vi Basic text editing operations in vi Invoking and leaving the editor Moving around in the file Searching the file for specific text Deleting text Adding or inserting text Undo and repeat Regular expressions File searching with grep More about regular expressions Intermediate text editing with vi Vi Quick Reference

On this page, "down" or "forward" in the file means to move to a position FURTHER from the beginning of the file. "Up" or "backward" means to move to a position CLOSER to the beginning of the file.

The file, which is simply a byte stream to Unix, is separated by vi into lines according to the presence of "new-line" characters (a non-printing character). The end of a line is the last character in the line before the new-line, not the last column on the screen.

For moving the cursor around on the screen without changing your location in the file vi does not need special cursor arrow keys. Instead, the h, j, k, and l (letter "ell", not numeral "one") keys (lowercase only) control the cursor movement.

If your terminal has arrow keys, and the terminal type has been correctly specified, they should also work.

h moves the cursor left, j moves it down, k moves it up, and l moves it right, as shown in this schematic:

                k

        h               l

                j

The j and k keys try to maintain the cursor in the same column on the new line. However, if you move to a line with fewer columns, then the cursor moves left to the end of the line. If the cursor is already on the end of the line, a j or k command keeps the cursor on the end of the new line, even if that is a new column position.

Each time you press h, j, k, or l, it moves the cursor one position. You can also move in bigger chunks.

• H (uppercase h) moves the cursor to the beginning of the top line on the screen, M (uppercase m) to the beginning of the middle line on the screen, and L (uppercase l) to the beginning of the last line on the screen.
• The + or the RETURN key, by themselves, move the cursor to the first non-blank position on the next line. The - key has the opposite effect, moving to the previous line.

Other commands let you move the cursor within a line.

• The 0 (zero) or ^ (caret) keys move the cursor to the first column (whether a blank or a character).
• The space bar moves one space to the right (same as the l key).
• The $ key moves to the end of the line.
• w moves to the right by one word (blank or punctuation delimited).
• b moves to the left by one word.
• e moves to the (right) end of the current word.
• W, B, and E (uppercase) have the same effect as their lowercase counterparts, except that they include any adjoining punctuation characters as part of the word.

The w, b, and e keys (and their uppercase variants) continue onto the next line when you reach the end of one line.

You can move the window (screen) to show another set of lines in the file.

• CTRL-F moves your window "forward" one entire screenful, except for two lines of overlap.
• CTRL-B moves your window "backward" one entire screenful, except for two lines of overlap.
• CTRL-D moves your window "down" about one-half screenful in the file.
• CTRL-U moves you "up" about one-half screenful.

You can use a command to go to a specific line in the file. For this purpose, it may be helpful to see line numbers on the screen. To turn on line numbering on screen, use

:set number <CR>

To turn off line numbering, use

:set nonumber <CR>

These commands do not put line numbers into the file, only on the screen.

To just find out the number of the line where the cursor is and total size of the file, use CTRL-G.

To go to line number n in the file, use the command nG, substituting the actual line number you want for n. Vi will try to move the screen so the desired line is in the middle. A plain G with no preceding number goes to the end of the file.

An alternate way to move to a desired line n in the file is the command

:n<CR>