2.4 — Screen and File Navigation#

When working with large files, you need efficient ways to move beyond single lines. This lesson covers scrolling, screen positioning, and file-level navigation.

File Navigation#

Jump to Line Numbers#

Command	Action
gg	Go to first line
G	Go to last line
{n}G	Go to line n
{n}gg	Go to line n
:{n}	Go to line n (command-line)

Jump by Percentage#

Command	Action
50%	Go to 50% of file
25%	Go to 25% of file
75%	Go to 75% of file

File Information#

Command	Action
Ctrl-g	Show file info and cursor position
g Ctrl-g	Detailed position info (columns, bytes, etc.)

Screen Navigation#

Cursor to Screen Position#

Command	Cursor moves to…
H	High — top of screen
M	Middle of screen
L	Low — bottom of screen

These are extremely useful for quick jumps within the visible area.

With counts:

• 3H — 3 lines from top of screen
• 5L — 5 lines from bottom of screen

Screen Scrolling#

Command	Action
Ctrl-f	Scroll forward (down) one full screen
Ctrl-b	Scroll back (up) one full screen
Ctrl-d	Scroll down half screen
Ctrl-u	Scroll up half screen
Ctrl-e	Scroll down one line (cursor stays)
Ctrl-y	Scroll up one line (cursor stays)

The half-screen scrolls (Ctrl-d and Ctrl-u) are often most useful because they maintain context.

Repositioning the Screen#

Sometimes you want to keep the cursor in place but reposition what’s visible:

Command	Screen positions so cursor is…
zz	Centered on screen
zt	At top of screen
zb	At bottom of screen

Use case: You jump to a line and want to see context below it:

1. 42G — jump to line 42
2. zt — put line 42 at top, see what follows

With Line Start#

Command	Action
z<Enter>	Like zt but cursor at first non-blank
z.	Like zz but cursor at first non-blank
z-	Like zb but cursor at first non-blank

Paragraph and Section Movement#

Paragraphs#

Paragraphs in Vim are separated by blank lines.

Command	Action
{	Jump to previous blank line (paragraph start)
}	Jump to next blank line (paragraph end)

Sections#

Sections are defined by { at the start of a line (common in C code).

Command	Action
[[	Jump to previous section start
]]	Jump to next section start
[]	Jump to previous section end
][	Jump to next section end

In practice, for most code, { and } (paragraph movement) are more useful.

Sentence Movement#

Command	Action
(	Jump to previous sentence
)	Jump to next sentence

A sentence ends with ., !, or ? followed by whitespace.

Matching Brackets#

Command	Action
%	Jump to matching bracket

This works with (), [], {}, and more.

Example:

function test() {
    if (condition) {
        doSomething();
    }
}

With cursor on the first {, pressing % jumps to the matching }.

Jump List Navigation#

Vim maintains a jump list of significant cursor movements.

Command	Action
Ctrl-o	Jump to older position
Ctrl-i	Jump to newer position
:jumps	Show jump list

What counts as a “jump”:

• G, gg, {n}G
• % (bracket matching)
• (, ), {, } (sentence/paragraph)
• H, M, L
• Search (/, ?, n, N)
• Marks

What does NOT count as a jump:

• j, k, h, l
• w, b, e
• f, t, F, T

Change List Navigation#

Vim also tracks where you’ve made changes:

Command	Action
g;	Jump to previous change position
g,	Jump to next change position
:changes	Show change list

Incredibly useful for returning to where you were editing.

Practical Navigation Patterns#

Pattern 1: Quick File Overview#

1. gg — go to start
2. Ctrl-f repeatedly — page through file
3. G — go to end
4. Ctrl-b repeatedly — page back

Pattern 2: Jump to Function and Center#

1. /function_name — search for function
2. n — find the match
3. zz — center it on screen

Pattern 3: Edit, Check, Return#

1. Make an edit
2. G — check end of file
3. Ctrl-o — return to where you edited

Pattern 4: Navigate Large Function#

1. Position on opening {
2. % — jump to closing }
3. % — jump back to opening {

Pattern 5: Read Through Code#

1. { or } — move by paragraph/function
2. zz — center current position
3. Repeat

Configuring Scroll Behavior#

Scroll Offset#

Keep cursor away from screen edges:

:set scrolloff=5     " Keep 5 lines visible above/below cursor

With scrolloff=5, scrolling happens before the cursor hits the edge, keeping context visible.

Smooth Scrolling (Neovim)#

Neovim supports smooth scrolling with plugins or built-in options.

Practice Exercises#

Exercise 1: File Jumps#

1. Open a long file (100+ lines)
2. gg — go to start
3. G — go to end
4. 50% — go to middle
5. :75 — go to line 75
6. Ctrl-o — jump back

Exercise 2: Screen Movement#

1. Press H to go to screen top
2. Press L to go to screen bottom
3. Press M to go to screen middle
4. Note how the cursor moves

Exercise 3: Scrolling#

1. Ctrl-d — scroll down half screen
2. Ctrl-u — scroll up half screen
3. Ctrl-f — scroll full screen down
4. Ctrl-b — scroll full screen up
5. Feel the difference between half and full

Exercise 4: Screen Repositioning#

1. Go to any line in the middle of a file
2. zt — watch screen reposition (line at top)
3. zz — watch screen reposition (line centered)
4. zb — watch screen reposition (line at bottom)

Exercise 5: Bracket Matching#

1. Open a file with nested brackets
2. Position cursor on an opening {
3. Press % — jumps to matching }
4. Press % again — jumps back
5. Try with (, [, etc.

Exercise 6: Paragraph Movement#

1. Open a file with blank lines separating sections
2. } — jump to next blank line
3. } — jump again
4. { — jump back
5. Use this to navigate between functions

Summary#

Category	Commands
File	gg, G, {n}G, {n}%
Screen Position	H, M, L
Scrolling	Ctrl-f/b (full), Ctrl-d/u (half), Ctrl-e/y (line)
Reposition	zz (center), zt (top), zb (bottom)
Paragraph	{, }
Bracket	%
Jump List	Ctrl-o (back), Ctrl-i (forward)
Change List	g; (back), g, (forward)

With these commands, you can navigate any file efficiently, no matter how large.