DJANGO_SETTINGS_MODULE

[weisong82]

[root@iZj6cay283146nzk0n83czZ scrapyLinkedIn]# scrapy crawl linkedin
Traceback (most recent call last):
File "/usr/local/bin/scrapy", line 11, in
sys.exit(execute())
File "/usr/local/lib/python3.4/site-packages/scrapy/cmdline.py", line 141, in execute
cmd.crawler_process = CrawlerProcess(settings)
File "/usr/local/lib/python3.4/site-packages/scrapy/crawler.py", line 238, in init
super(CrawlerProcess, self).init(settings)
File "/usr/local/lib/python3.4/site-packages/scrapy/crawler.py", line 129, in init
self.spider_loader = _get_spider_loader(settings)
File "/usr/local/lib/python3.4/site-packages/scrapy/crawler.py", line 325, in _get_spider_loader
return loader_cls.from_settings(settings.frozencopy())
File "/usr/local/lib/python3.4/site-packages/scrapy/spiderloader.py", line 33, in from_settings
return cls(settings)
File "/usr/local/lib/python3.4/site-packages/scrapy/spiderloader.py", line 20, in init
self._load_all_spiders()
File "/usr/local/lib/python3.4/site-packages/scrapy/spiderloader.py", line 29, in _load_all_spiders
self._load_spiders(module)
File "/usr/local/lib/python3.4/site-packages/scrapy/spiderloader.py", line 23, in _load_spiders
for spcls in iter_spider_classes(module):
File "/usr/local/lib/python3.4/site-packages/scrapy/utils/spider.py", line 25, in iter_spider_classes
if inspect.isclass(obj) and
File "/usr/local/lib/python3.4/inspect.py", line 83, in isclass
return isinstance(object, type)
File "/usr/local/lib/python3.4/site-packages/django/utils/functional.py", line 226, in inner
self._setup()
File "/usr/local/lib/python3.4/site-packages/django/conf/init.py", line 42, in _setup
% (desc, ENVIRONMENT_VARIABLE))
django.core.exceptions.ImproperlyConfigured: Requested settings, but settings are not configured. You must either define the environment variable DJANGO_SETTINGS_MODULE or call settings.configure() before accessing settings.

[eracle]

The project doesn't use Django. You should create its virtual environment and activate it. Maybe you are using another virtual env.
Follow this tutorial:
http://python-guide-pt-br.readthedocs.io/en/latest/dev/virtualenvs/