How do I validate parameter input

[Tison]

I want to validate this input (year comma month) ;
2004,06
and the validation must check for valid year 1999 - 2010
must check for a comma
must check for valid month 01-12

 

[guggach]

finally an appropriate case for awk,

...
split($1,arr,",");
arr[0] += 0; #ensure integer interpretation
arr[1] += 0; #ensure integer interpretation
if(arr[0] >2010 || 1999 >arr[0]) exit(1);
if(arr[1] >12 || 1 >arr[1]) exit(1);
#do the rest
exit(0);
...

guggach

 

[Tison]

And to validate the comma (format of parm is specific) ?