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  1. BEGIN { BASEDATE="2011 02 02" ; DIW="Sun" ; BEF="2"
  2.         ct=BASEDATE " 00 00 00"
  3.         ct=mktime(ct)
  4.         while (strftime("%a",ct) != DIW) { 
  5.             ct-=24*60*60 
  6.         }
  7.         ct-=BEF*24*60*60
  8.         print strftime("%Y-%m-%d %a",ct)
  9. }
Success #stdin #stdout 0.01s 4276KB
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2011-01-28 Fri
https://ideone.com/TYQ2l
language:
AWK (gawk 4.2.1)
created:
12 years ago
visibility:
public

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