On Wed 15 Nov 2017 at 13:11:56 (-0600), Karlin High wrote: > On 11/15/2017 12:30 PM, David Wright wrote: > >I don't understand this. sleepenh is*not* a replacement for usleep. > >Gnu systems use*their* sleep command which takes non-integer values. > >As expected, sleep uses seconds, usleep uses microseconds (where > >u is the usual replacement for ยต) and nanosleep uses nanoseconds > >(but the last isn't a command, obviously). Perhaps someone didn't > >realise that. > > All I know about this is what Google finds for me. :) > > karlin@lilyvideo:~$ usleep > -bash: usleep: command not found > > karlin@lilyvideo:~$ sudo apt-get install usleep > Reading package lists... Done > Building dependency tree > Reading state information... Done > E: Unable to locate package usleep > > karlin@lilyvideo:~$ sudo apt list | grep usleep > > WARNING: apt does not have a stable CLI interface. Use with caution > in scripts. > > karlin@lilyvideo:~$ > > Debian finds nothing for this, unless I just don't know how to ask. > > There IS a manpage for usleep, but it looks like it's for a C > library feature, not an executable. It says #include <unistd.h>
AFAICT the only Debian with files called usleep is 5.0 (lenny) where there were: usr/share/epic4/help/5_Programming/usleep usr/lib/nosql/usleep I think I might have seen a reference to usleep in RedHat. > I got the idea for sleepenh from these: > https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=812184 > https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=223455 The last message of 812184 reveals that the maintainer applied the correct fix but not what it was, for which you have to consult the file mentioned, /usr/share/doc/sleepenh/changelog.Debian.gz sleepenh (1.2-3) unstable; urgency=low * fixed typos in manpage, thanks to A. Costa. closes: #422939 * decided not to add a symlink to usleep, as asked in bug 223455. The gnu 'sleep' command (provided by package coreutils) accepts floating numbers as arguments and can be used for doing it. closes: #223455 > So it would be better if I changed the mkvideo script from "usleep > 250" to "sleep 0.25" instead of "sleepenh 0.25" ? Yes, but it's a factor of a million, not a thousand, so sleep 0.00025 would be appropriate as a replacement for usleep 250. Cheers, David. _______________________________________________ lilypond-user mailing list lilypond-user@gnu.org https://lists.gnu.org/mailman/listinfo/lilypond-user
