How to keep the script waiting if another instance is running?

[ur]

Is there anyway to check whether the script is launched already and wait till the other instance is closed and continue after that.

 

[water]

Either use _Singleton or Processlist in a loop to check for more than one instance. 

Edited November 11, 2017 by water

[ur]

Singleton process we can check another process or exe, but I want to check if any instances of my own script is running and wait for its completion.

 

Present I am tracking that with a text file.But I think that is not a right way.

[water]

Please reread the help file for _Singleton. It is not limited to other processes or programs. 

[Earthshine]

You should be able to look at the cmdline of the process and look for your script name