Reuben Thomas wrote: > On Mon, 25 May 2009, Jim Meyering wrote: > >> To do what he wants you have to know that ls -1U is the only >> way to get one output entry per readdir call. >> >> Reuben, you want to do it like this: >> >> ls -1U|head|xargs ls -l > > Thanks for the hint about -1, but this doesn't seem to make any > difference: I run "ls -1U|head" in a directory with lots of files (about > 10,000) and it pauses for a minute or so before giving me my ten lines > of output. > > If I run the command again, then of course it runs almost instantly, so > I'm not sure what use the loops are in the tests you give.
With the ls on fedora 8 (coreutils 6.9) I see all the redundant getdents64() calls when using strace on Jim's command above. With the latest coreutils I do not. cheers, Pádraig. _______________________________________________ Bug-coreutils mailing list Bug-coreutils@gnu.org http://lists.gnu.org/mailman/listinfo/bug-coreutils
