dired-ls-sorting-switchesdired-ls-sorting-switches is a variable defined in `
dired.el'. Its value is
"SXU"Documentation: String of `ls' switches (single letters) except "t" that influence sorting. This indicates to Dired which option switches to watch out for because they will change the sorting order behavior of `ls'. To change the default sorting order (e.g. add a `-v' option), see the variable `dired-listing-switches'. To temporarily override the listing format, use `C-u C-x d'.