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.
The full documentation for
sleep is maintained as a Texinfo manual. If the
info and
sleep programs are properly installed at your site, the command
info coreutils sleep