Sorry for saying this, but debian it would not be wrong... # sort -R a.txt 7 7 7 7 ...
On 11/04/2016 02:17 PM, Joel WirÄmu Pauling wrote: > Pipe through uniq and you'll get what you are after. > > Design intent for sort, as others point out this behaviour is documented. > > On 4 November 2016 at 11:47, Christian Gruhl <cgr...@uni-kassel.de> wrote: > >> Hi minek, >> >> On 11/04/2016 04:41 PM, minek van wrote: >>> Hello, >>> >>> # strings /dev/arandom | grep -o '[[:print:]]' | head -100 > a.txt >>> # sort -R a.txt >>> K >> ... >>> 9 >>> # uname -mrs >>> OpenBSD 6.0 amd64 >>> # >>> # sort -R a.txt > b.txt >>> # cksum b.txt >>> 3374888359 200 b.txt >>> # sort -R a.txt > b.txt >>> # cksum b.txt >>> 109071951 200 b.txt >>> # sort -R a.txt > b.txt >>> # cksum b.txt >>> 3441576000 200 b.txt >>> # >>> >>> from: http://man.openbsd.org/OpenBSD-current/man1/sort.1 >>> >>> -R, --random-sort, --sort=random >>> >>> Sort lines in random order. This is a random permutation of the >> inputs with the exception that equal keys sort together. It is >> implemented by hashing the input keys and sorting the hash values. The >> hash function is randomized with data from arc4random_buf(3), or by file >> content if one is specified via --random-source. If multiple sort fields >> are specified, the same random hash function is used for all of them. >>> Although the "b.txt" differs, if we check it by the human eye... that >> is not random.. **Why**? Why is it called random, WHEN IT IS NOT >> RANDOM?! Random should mean RANDOM. Not "almost" random.. >>> The same can be seen on ex.: RHEL7. >>> >> I would guess this is the desired behavior. The man page cited by you >> also states: >> >> 'This is a random permutation of the inputs with the exception that >> equal keys sort together. It is implemented by hashing the input keys >> and sorting the hash values.' >> >> So clearly same values/strings will be put together. >> >> Best wishes >> >> Chris >> >> [demime 1.01d removed an attachment of type application/pkcs7-signature >> which had a name of smime.p7s]
