SC2183

This format string has 2 variables, but is passed 1 arguments.

Problematic code:

printf "Hello %s, welcome to %s.\n" "$USER"

Correct code:

printf "Hello %s, welcome to %s.\n" "$USER" "$HOSTNAME"

Rationale:

ShellCheck has noticed that you're using a printf format string with more %s variables than arguments to fill them.

In the problematic example case, the last %s will just become an empty string every time.

Either remove the unused variables from the format string, or add enough arguments to fill them.

Exceptions:

None.