python - Cannot change directory to a script using bash - cron -

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this question has answer here:

i have script runs multiple instances of python scrapy crawlers, crawlers int /root/crawler/batchscript.py

and in /root/crawler/ have scrapy crawler.

crawlers working fine.

batchscript.py looks this, (posting relevent code)

from scrapy.settings import settings scrapy.utils.project import get_project_settings amazon_crawler.spiders.amazon_scraper import myspider  process = crawlerprocess(get_project_settings())

when run batchscrip.py inside /root/crawler/ directory scraper runs fine.

but when run outside of directory using python /root/crawler/batchscript.py not run intended, (settings not imported correctly), get_project_settings() empty.

i have tried creating bash script too create bash script called batchinit.sh

#!/bin/bash alias batchscript="cd /root/crawler/" python batchscript.py

and behaviour same :(

when run batchinit.sh inside /root/crawler/ directory scraper runs fine.

but when run outside of directory using bash /root/crawler/batchinit.sh not run intended, (settings not imported correctly), get_project_settings() empty.

why doing it? ultimate goal?

i want create cronjob script. tried schedule cronjobs using above mentioned commands have issues mentioned above.

using bash, do: 

cd /root/crawler && python batchscript.py

it's policy use absolute paths programs/executables referenced in cron jobs.


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