Vim is a powerful text editor that is commonly used by developers and system administrators on Linux and UNIX systems. One of the key features of Vim is its support for editing multiple files and windows.
To open multiple files in Vim, you can use the -o flag to open each file in a separate window, or the -O flag to open each file in a new split window. For example:
vim -o file1 file2 file3
This will open three separate windows, each containing a different file.
You can also use the :split command to split the current window into two horizontally or vertically, and then use the :edit command to open a new file in one of the split windows. For example:
:split :edit file2
This will split the current window and open file2 in the new split window.
Once you have multiple windows open, you can use the Ctrl-w key combination to switch between them. You can also use the :wincmd command to move between windows, or to resize and rearrange them.
For example, to move to the window to the right of the current window, you can use:
:wincmd l
To move to the window below the current window, you can use:
:wincmd j
You can find more information about Vim's windowing support in the Vim documentation by typing :help windows within Vim.