timers in unix

ny idea as to how to implement timers in unix???

tat is i want to execute a particular command at regular intervals.....how cud i do this???

You can put it in a while loop and use sleep(5).It will pause for 5 sec and den resume.

say while(1)
do
some code
sleep(5)
done

[335723@oracleclient ~]$ sleep 5 && cat hello.txt

it can be used for single line command.......
it ll delay 5 secs .....

Thanks
but how to do u repeat the execution of a particular command
say every 5sec i want to display hello world msg

try this pgm

Code:

while(true)
do
echo Hello World
sleep 3
done

for ((i=0 ;; i++))
do
echo hello
sleep 1
done


how about this!!

hey thanks