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Ok so I was just wondering how console applications like top(1) for linux overwrite multiple lines. I want to know how to do it for C++ or C. I know how to overwrite 1 line by just putting a \r but I wanted to know how to do so for multiple lines, again like in top or if its even possible.
They use terminal escape sequences to move the cursor around the screen. A few even use direct framebuffer access, to treat the screen as an array of characters which can be directly indexed.
The
curses(orncurses) library is a good abstraction layer.