Turnstone Turnstone Turnstones are two bird species that comprise the genus Arenaria in the family Scolopacidae. They are closely related to calidrid sandpipers and might be considered members of the tribe Calidriini. The genus name "arenaria" is from Latin "arenarius", "inhabiting sand", from "arena", "sand". Both birds are distinctive medium-sized waders. Roughly speaking, length is typically between 20 and 25 cm, with a wingspan between 50 and 60 cm and a body mass between 110 and 130gm. For waders their build is stocky, with short, slightly upturned, wedge shaped bills. They are high Arctic breeders, and are migratory. Their strong necks
Sort (Unix) Sort (Unix) In computing, sort is a standard command line program of Unix-like operating systems, that prints the lines of its input or concatenation of all files listed in its argument list in sorted order. Sorting is done based on one or more sort keys extracted from each line of input. By default, the entire input is taken as sort key. Blank space is the default field separator. The "-r" flag will reverse the sort order. Sort was part of Version 1 Unix. By Version 4 Ken Thompson had modified it to use pipes, but sort retained an option to