scripts works with awk 3.1.3 but not with 3.1.5

[hodgins]

script gives last day of the month with awk 3.1.3 but with awk 3.1.5 LAST_DAY is MT?

#!/bin/ksh
LAST_DAY=`cal | awk '{
if ( length($0) > 0 )
{
end_of_month=$0
}
}
END {
printf "%s\n",substr(end_of_month,length(end_of_month) -1 )
}'`
echo $LAST_DAY

 

[wakemeup]

This should work:

LAST_DAY=`cal | awk '{last=$NF}END{print last}'`

 

[hodgins]

i get no output? with either version of awk.

 

[hodgins]

my bad that does work...for this month.
what about a month that has a blank line at the end?

cal 10 2007 | awk '{last=$NF}END{print last}'

 

[hodgins]

this works but could probably be better.
cal 10 2007 | awk NF | awk '{last=$NF}END{print last}'

 

[wakemeup]

LAST_DAY=`cal | awk 'NF{last=$NF}END{print last}'`