`nano` command line is a simple and easy-to-use text editor that can be run in a terminal window. It supports basic editing functions such as copy, paste, and find and replace. It is an ideal choice for beginners and users who need to edit text quickly.

$

File path

Display line number and character count of current cursor position (-c)

Specify directory as working directory (-d)

Disable automatic line breaking (-E)

Display help information (-h)

Automatic backup (-i)

Enable mouse support (-k)

Enable mouse support (-m)

Read-only mode (-r)

Automatically add spaces when saving (-S)

Display tab characters (-t)

Disable undo (-u)

Display version number (-v)

Force write file (-w)

Enable automatic backup (-x)

Example

Open file: nano file.txt
Copy a line: Move the cursor to the line, press Ctrl + K, then move the cursor to the position to copy to, and press Ctrl + U
Paste a line: Move the cursor to the line to paste to, and press Ctrl + U
Find text: Press Ctrl + W, enter the text to find, and press Enter
Replace text: Press Ctrl + \\\\, enter the text to find and the text to replace, and press Enter
Save file: Press Ctrl + O
Exit nano: Press Ctrl + X