hexyl
A command-line hex viewer
Screenshots

Hunter's comment
because you never know when you need to go root level with your favorite code editor right? pretty sweet colour coded command-line viewer.
hexyl is a simple hex viewer for the terminal. It uses a colored output to distinguish different categories of bytes (NULL bytes, printable ASCII characters, ASCII whitespace characters, other ASCII characters and non-ASCII).
Link
https://github.com/sharkdp/hexyl

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