sleep(1000) - phpMan

SLEEP(1)                         User Commands                        SLEEP(1)
NAME
       sleep - delay for a specified amount of time
SYNOPSIS
       sleep NUMBER[SUFFIX]...
       sleep OPTION
DESCRIPTION
       Pause for NUMBER seconds.  SUFFIX may be 's' for seconds (the default),
       'm' for minutes, 'h' for hours or 'd' for days.  Unlike most  implemen-
       tations  that require NUMBER be an integer, here NUMBER may be an arbi-
       trary floating point number.  Given two or more  arguments,  pause  for
       the amount of time specified by the sum of their values.
       --help display this help and exit
       --version
              output version information and exit
AUTHOR
       Written by Jim Meyering and Paul Eggert.
REPORTING BUGS
       GNU coreutils online help: <https://www.gnu.org/software/coreutils/>;
       Report sleep translation bugs to <https://translationproject.org/team/>;
COPYRIGHT
       Copyright  (C) 2018 Free Software Foundation, Inc.  License GPLv3+: GNU
       GPL version 3 or later <https://gnu.org/licenses/gpl.html>;.
       This is free software: you are free  to  change  and  redistribute  it.
       There is NO WARRANTY, to the extent permitted by law.
SEE ALSO
       sleep(3)
       Full documentation at: <https://www.gnu.org/software/coreutils/sleep>;
       or available locally via: info '(coreutils) sleep invocation'
GNU coreutils 8.30                 July 2018                          SLEEP(1)