SC1063 – ShellCheck Wiki

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You need a line feed or semicolon before the do.

Problematic code:

for file in * do
  echo "$file"
done

Correct code:

for file in *; do
  echo "$file"
done

# or 

for file in *
do
  echo "$file"
done

Rationale:

ShellCheck found a do on the same line as a loop, but do only starts a loop block at the start of a line/statement. Make the do the start of a new line/statement by inserting a linefeed or semicolon in front of it.

Exceptions:

If you wanted to treat do as a literal string, you can quote it to make this clear to ShellCheck and humans:

for f in "for" "do" "done"
do
  echo "Shell keywords include: $f"
done

Related resources:

• Help by adding links to BashFAQ, StackOverflow, man pages, POSIX, etc!

ShellCheck is a static analysis tool for shell scripts. This page is part of its documentation.