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Freeze a Process in Linux

i am very much intrested in freezing a process things i studied in distributed system i want to try it

what happen when process is freezed?
    The process gets inactive(i.e whatever you press keyboard or mouseclick the program will not listen)more simply you can see application and you cannot do anything

Let's see how to do it
 First we need to find pid(Process IDentifier) of the process using pidof

     this can be done using pidof <appname> 
                                          eg: pidof firefox

Then note all the pid and pass it to below command

            kill -STOP <pid1..n>

now your app become inactive

to activate it use the below command

            kill -CONT <pid1..n>

wow its awesome folks, freezing a process can be used to

migrate a process from one system to other system

more explanation in next post about what is happening in background of above process

if you have any crazy question like this comment it below 

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