SC1060 – ShellCheck Wiki

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Can't have empty do clauses (use true as a no-op)

Problematic code:

for i in 1 2 3; do
done

Correct code:

for i in 1 2 3; do
  true
done

Rationale:

An empty do ... done block is not valid. Use true or : if you need no command at all.

Exceptions:

None.

Related resources:

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