SC2048

cp $* ~/dir

cp "$@" ~/dir

$*, unquoted, is subject to word splitting and globbing.

Let's say you have three arguments: baz, foo bar and *

"$@" will expand into exactly that: baz, foo bar and *

$* will expand into multiple other arguments: baz, foo, bar, file.txt and otherfile.jpg

Since the latter is rarely expected or desired, ShellCheck warns about it.

None.