Calculate days on which Friday the 13th occurs

for y in $(seq 1996 2018); do echo -n "$y -> "; for m in $(seq 1 12); do NDATE=$(date --date "$y-$m-13" +%w); if [ $NDATE -eq 5 ]; then PRINTME=$(date --date "$y-$m-13" +%B);echo -n "$PRINTME "; fi; done; echo; done
I removed the dependency of the English language
Sample Output
1996 -> setembro dezembro 
1997 -> junho 
1998 -> fevereiro março novembro 
1999 -> agosto 
2000 -> outubro 
2001 -> abril julho 
2002 -> setembro dezembro 
2003 -> junho 
2004 -> fevereiro agosto 
2005 -> maio 
2006 -> janeiro outubro 
2007 -> abril julho 
2008 -> junho 
2009 -> fevereiro março novembro 
2010 -> agosto 
2011 -> maio 
2012 -> janeiro abril julho 
2013 -> setembro dezembro 
2014 -> junho 
2015 -> fevereiro março novembro 
2016 -> maio 
2017 -> janeiro outubro 
2018 -> abril julho 

5
By: ginochen
2018-06-25 09:20:57

4 Alternatives + Submit Alt

What Others Think

Nice improvement, ginochen!
suspenderguy · 19 weeks and 2 days ago

What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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