ls sorting parameter / options

ls -trl                    sort by creation date
ls -turl                  shows files with latest access
ls -c                      sort by date of last status change
ls -f                      disable sorting and shows . and ..
ls -S                     sort by file size
ls -t                      sort by last change date
ls -U                    no sorting
ls -u                     sort by access time
ls -X                     sort by file extension