Sed on AIX does not recognize -i flag

Question

Does sed -i work on AIX?

If not, how can I edit a file \"in place\" on AIX?

Answer 1

#!/bin/ksh
host_name=$1
perl -pi -e "s/#workerid#/$host_name/g" test.conf 

Above will replace #workerid# to $host_name inside test.conf