Command Substitution vs Process Substitution - What is the difference? @linuxleech

Uploaded March 2019 | Updated September 2026, 3 hours ago

So what is the difference between command substitution and process substitution?
This is quite a common point of confusion for new users of Linux and BASH.

On the surface they can seem quite similar in their function but they are different and are useful for very different situations.

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