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  1. if [ $# -gt 1 ]
  2. then
  3. echo "syntax is <$0> [<year>]"
  4. exit 1
  5. fi
  6. if [ $# -ne 1 ]
  7. then
  8. yr=`date +%Y`
  9. else
  10. yr=$1
  11. fi
  12. d4=`expr $yr % 4`
  13. d100=`expr $yr % 100`
  14. d400=`expr $yr % 400`
  15. if [ $d4 -eq 0 -a $d100 -ne 0 -o $d400 -eq 0 ]
  16. then
  17. echo " $yr is a leap year"
  18. else
  19. echo " $yr is not a leap year"
  20. fi
  21.  
Success #stdin #stdout 0.01s 5292KB
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 2025 is not a leap year
https://ideone.com/X9AvDt
language:
Bash (bash 5.0.3)
created:
5 days ago
visibility:
public

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