how-to: one command for repeat OR iterate shell OR bash command delay OR interval

Is there already one bash command to do what the following script does (poorly 
or incompletely), ie repeat "command" indefinitely every "x" seconds:

#!/bin/sh
# usage: repeat [x] <command>
while true ; do $2 ; sleep $1 ; done


if not, and you want to use the above in a script of your own, just copy the 
above 3 lines and do the following (typing the lines into the console or 
pasting them in shell, using konsole under kde or gpm under a tty shell; hit 
<Ctrl-c> to stop it from looping). The two examples are optional. The stuff in 
angle brackets, <>, is stuff you won't see in your shell output:

am@[bin]$ cat >repeat
#!/bin/sh
# usage: repeat [x] <command>
while true ; do $2 ; sleep $1 ; done
am@[bin]$ chmod +x repeat
<examples>
am@[bin]$ ./repeat 2 "cat /proc/loadavg"
0.46 0.92 1.72 9/125 24171
0.46 0.92 1.72 2/125 24173
0.59 0.94 1.72 1/125 24181
<Ctrl-c>
am@[bin]$ cd ..
am@[~]$ repeat 2 uname
Linux
Linux
<Ctrl-c>

btw: i've already posted the same to:
http://www.linuxquestions.org/questions/showthread.php?s=&threadid=343892

some answers might show up there before i get back 

-- 
AD Marshall
Tel:  +84 (0)903871313
eM:   admarshall@xxxxxxxxx
Web:  http://h0lug.sourceforge.net
Zone: ICT (IndoChina Time; GMT/UTC+7)
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