Shell Programming and Scripting

i have a script that read a file which contains process_id and time that he's
in and it lookes like this
0:30 54545
0:44 66788
0:90 23233
i need to read every line in the file and get the time and if the process is greater then 0:30 to kill the process id
the script looks like this
cat bbb | while read line
do
#kill -9 $i
done
i don't how to take of the hour , ask about it and kill the process
can you please help me and another question
did i do the loop ok did i need the pipe before the while

Your loops looks fine - you need to separate out the processID from the time; there's a couple different ways to do it. the easiest is with 'cut'.

Code:

proc=`echo $i | cut -f2 -d" "`
kill -9 $proc

Code:

#!/usr/bin/ksh

IFS='[ :<tab>]'

while read a b pid; do
   [[ $a$b -gt 30 ]] && kill $pid
done < bbb

sorry i didn't understand
i need to ask about the time too if it's greater then 30 minutes
and the take of the process and kill it
the name of my file is bbb can you please help me
thanks a lot

Didnt you look at/try reborg's solution ?

how can i try if i can't understand which variables to put in ?
can someone please help me

Yes, if you explained a bit more clearly where you are having problems.