[erlang-questions] Hot code upgrade

[Ameretat Reith]

On Monday, January 30, 2017 12:09:19 PM IRST, Arun wrote:
> ... is it 
> mandatory that all 20 modules has to be mentioned in the 
> instructions or the modules which are added or modified only 
> need to be mentioned. ?

Include just changed/removed/added modules.  Remember the instruction 
depends on nature of module, e.g. a library modules often just needs a load 
but a gen_server most likely needs a synchronous update.