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 implementations that require NUMBER be an integer, here NUMBER may be an arbitrary floating point number.

--help
display this help and exit
--version
output version information and exit