Created
September 7, 2010 07:12
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Determine yesterday's date (yesterdate) in ruby or shell (linux and OSX)
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| > date -d-1day | |
| Mon Sep 6 09:08:43 CEST 2010 | |
| > date -d-1day +%Y%m | |
| 201009 |
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| > date -v-1d | |
| ma 6 sep 2010 09:10:00 CEST | |
| > date -v-1d +%Y%m | |
| 201009 |
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| require 'date' | |
| puts (Date.today-1).strftime("%Y%m") |
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