Master Vim Split Windows: Horizontal, Vertical, and Dynamic Resizing Commands

Overview

Vim's split window capability lets you view and edit multiple files or different parts of the same file simultaneously, greatly improving code comparison, copying, and overall productivity.

Horizontal Split

Open a new file in a horizontal split with: :sp linuxmi.py or :split linuxmi.py The command divides the screen into two panes stacked vertically, placing the cursor in the upper pane.

Vertical Split

Open a new file in a vertical split with: :vsp linux.py or

:vsplit linux.py

Read‑Only Split

Open a file in a read‑only split:

:sview linux.py

Opening Multiple Files with Splits from the Command Line

Use the following options when launching Vim: vim -O file1 file2 … – vertical splits vim -o file1 file2 … – horizontal splits

Example:

vim -O3 linux.py linuxmi.py linuxmi.cpp

Adjusting Split Size

Resize panes using ctrl‑w shortcuts: ctrl‑w = – make all panes equal height ctrl‑w + – increase height by 1 ctrl‑w - – decrease height by 1 10 ctrl‑w + – increase height by 10 lines ctrl‑w N + – increase height by N lines

Directly set height with: :resize 30 or

:res N

Moving Between Splits

Navigate using: ctrl‑w h/j/k/l – move left/down/up/right ctrl‑w ←/↑/→/↓ – arrow keys ctrl‑w H/J/K/L – move the current pane to the far left/bottom/top/right

Closing Splits

Close panes with: ctrl‑w c – close current pane ctrl‑w q – close current pane; if it’s the only one, exit Vim :only – keep only the current pane :hide – hide the current pane

Summary

Because Vim is used frequently, mastering its split‑window commands simplifies working with multiple files and improves editing efficiency.