Tag:Is it correct

  • Shell script to determine whether the date entered is correct


    Today’s topic is to determine whether the input date is correct, using the function in our previous 03 exampleHere’s the code #!/bin/sh # valid-date — Validates a date, taking into account leap year rules. exceedsDaysInMonth() { case $(echo $1|tr ‘[:upper:]’ ‘[:lower:]’) in jan* ) days=31 ;; feb* ) days=28 ;; mar* ) days=31 ;; apr* […]