What this snippet does
Process substitution gives each command a file-like handle, so diff can read both.
Expected output
> extra-file.txt
Why practise typing this
Typing pipes & redirection code builds muscle memory for the symbols and indentation Linux uses most, which prose-based typing tests never cover. DevType measures your words per minute and accuracy on this snippet and tracks the individual characters you mistype, so later lessons can target them.
More Linux practice
- Chaining commandsPipes & Redirection · beginner
- Writing and appendingPipes & Redirection · beginner
- Redirecting stderrPipes & Redirection · intermediate
- Order of 2>&1 mattersPipes & Redirection · intermediate
- Seeing and saving outputPipes & Redirection · intermediate
- Writing to a root-owned filePipes & Redirection · intermediate