I think more about culture that you should have "automate first" mindset. Yes, changing 500 lines in a text file if you can write grep replace in 30 seconds is

I think more about culture that you should have "automate first" mindset. Yes, changing 500 lines in a text file if you can write grep replace in 30 seconds is nice. Automating deployment that you are doing once a month and is taking 20 mins to prepare and run, I don't feel it. Because developing such automation takes considerable resources especially if you cannot test it right away on prod and have to make test env and other overhead. Maybe one should automate preparation parts of such deployment first and then see how it goes.