Check out this url which explains you ls command in detailswww.syntax-example.com/.../...command-ls-2433.aspxwww.syntax-example.com/.../...iles-start-1538.aspxwww.syntax-example.com/.../...dden-files-1572.aspxwww.syntax-example.com/.../...mmand-unix-2885.aspx