Need to know rhe PID for the Shell Script running

Shell Programming and Scripting
1

I have a Shell Scritp named "Statistics" which has a Infinate Wille Loop Running

I want to restart this Srcipt "Statistics" when i try to run other srcipt Ex "ABC"

so i want to kill the "Statistics" script in "ABC"
so for this I what to know the PID for that Script "Statistics" which is running continusly

When i try ps -ef | grep Statistics it does not give me any thing

How do i know the PID for the script "Statictics" ?

2

Does 'Statistics' appear in the ps -ef list at all ? Or did you get the spelling wrong ?

As a side note, if Statistics is running, then you would have two rows of result when you issue ps -ef | grep Statistics. You might want to switch to

ps -ef | grep 'tatistics'
3

Ya Vino

I does not appear in ps -ef list

i dont know if a process is created for a srcipt running

i yes with what name?

4

Consider this:

$ echo "while :;do sleep 10; done" > Statistics 
$ chmod +x Statistics 
$ ./Statistics &
[1] 13719
ess038$ ps -p 13719
   PID TTY      TIME CMD
 13719 pts/1    0:00 bash
$ kill -9 13719
$ 
[1]+  Killed                  ./Statistics

So you can modify your script as:

$ echo "echo \$\$ > Statistics.pid" > Statistics
$ echo "while :;do sleep 10; done" >> Statistics
$ ./Statistics &
[1] 14336
$ cat Statistics.pid
14336
$ kill -9 $(<Statistics.pid)
$ 
[1]+  Killed                  ./Statistics
5

The Code u gave starts a back ground process and immeditly kills it

My requirement goes this way

when i run a script say "ABC"

1-- it should stop the .Statistics script by killing the previously running .Statistics

2-- then restart the .Statistics script again

6

You have to write it yourself ...
Anyway, you could use something like this:


$ cat Statistics
echo $$ > Statistics.pid
while :;do sleep 10; done

$ cat ABC
kill -9 $(<Statistics.pid)
./Statistics
7

I have found some alternative

if i give

#!/bin/ksh

as the first statment in script

then the process gets submitted with the scripts name as Process name

then i grep for the script name from ps -ef and that solves the problem

Thanks for Everything

8

... and, of course, "grep"-ing the pid from ps will be less efficient.