Sometimes, you may find some file you can’t delete because of the filename begins with minus(-). LBE have that example on the post “Remove file start with special character”, as simple as this
The same way you can manipulate those files by mv, cp etc. The important highlights here is ./
dot(.) is actually means current directory and slash (/) is actually use to escape the minus(-). Without escaping the minus(-), linux commands will treat it as an option argument.
Is actually play all mp3 including those mp3 files with filename start with minus(-).