Ivan Velichko • 8/11/2019

Linux PTY - How docker attach and docker exec Commands Work Inside

This technical article delves into the internals of Docker's `attach` and `exec` commands, explaining their reliance on Linux pseudoterminals (PTYs). It covers why PTYs are needed for terminal signal handling and I/O redirection in detached containers, and demonstrates how to implement an attach-like feature with a minimal code example.

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#terminal #linux #docker