Calling a Returned Value to Another Function

[valerydolce]

I have to follow some steps ( mandatory ) to complete this task.


get_environment_variable_value()

• The header for this function must be
  get_environment_variable_value(variable_name)
  
  
• This function must accept a shell variable as its only parameter
  
  
• The function must return the value of this shell variable
  
  
• If the variable is not defined, the function must return the empty string
  

get_dirs_from_path()

• The header for this function must be
  get_dirs_from_path()
  
  
• This function must accept no parameters
  
  
• This function returns a list of the directories contained in PATH
  

get_file_count()

• The header for this function must be
  get_file_count(dir_path)
  
  
• This function must accept a directory name as a parameter
  
  
• The function must return the number of files in this directory
  
  
• Sub-directories must not be included in this count
  

and the test code has to look like this :
path_dirs = get_dirs_from_path()
dir_count = get_file_count_for_dir_list(path_dirs)
print_sorted_dictionary(dir_count)