code: def example_all():
      
      my_file = FileAsObj()
      my_file.filename = '/tmp/example_file.txt'
      my_file.add('# First change!')
      my_file.save()
      my_file = FileAsObj('/tmp/example_file.txt')
      my_file.unique = True
      my_file.sorted = True
      my_file.add('1')
      my_file.add('1')
      my_file.add('2')
      my_file.add('20 foo')
      my_file.add('200 bar')
      my_file.add('# Comment')
      my_file.unique = False
      my_file.add('# Comment')
      my_file.add('# Comment')
      my_file.unique = True
      my_file.rm(my_file.egrep('^#.*'))
      my_file.rm(my_file.grep('foo'))
      my_file.replace(my_file.egrep('^2'), 'This line was replaced.')
      print(my_file)
      print(my_file.log)
docs: Use a bunch of methods on a file.