UNIX command

hi all,

I need to execute one command in shell script after 120 seconds through crontab.

I have given sleep 1m. but this does not work. any idea please.

 
sleep 60s
 

but the above command not working n shell script.

sleep 120

I can't believe that. More context, please. Error messages, script, ...

A more descriptive title would be useful.
As mentioned by MadeInGermany, If you dont have GNU specific sleep you must provide only integer (without s ).