The Wayback Machine - https://web.archive.org/web/20070712184450/http://linux.die.net:80/man/1/sleep

sleep(1) - Linux man page

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

AUTHOR 

Written by Jim Meyering and Paul Eggert.

REPORTING BUGS 

Report bugs to <bug-coreutils@gnu.org>.

COPYRIGHT 

Copyright © 2006 Free Software Foundation, Inc. This is free software. You may redistribute copies of it under the terms of the GNU General Public License <http://www.gnu.org/licenses/gpl.html>. There is NO WARRANTY, to the extent permitted by law.

SEE ALSO 

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 sleep

should give you access to the complete manual.

REFERENCED BY 

chat(8), filechan(8), perlsyn(1), perltrap(1)