Oh, now I choose that. it's working. but don't know if its preinstalled in the os. yesterday, i installed avro folowing a youtube video but that didnt work. So does that mean it was already there with the os ? i'm using avro now.
but can you confirm what is the status with your PC and writing bengali , you says it is working ?
if you booted down and rebooted and it works how you want then it must be installed. Rather tricky for me to help i don't often get access to a debian /ubuntu PC