aosvc not working w/o netstat

[uncletoxa]

Hey, there are some linux distro that does not have netstat installed by default (like ubuntu 24.04). That ends up in aosvc not picking username properly:

Jul 01 13:48:29 laptop aosvc[17012]: 2024/07/01 13:48:29 credentials dir:/home//.aws/
Jul 01 13:48:29 laptop aosvc[17012]: 2024/07/01 13:48:29 updated /home//.aws/credentials file

Possible solutions:

1. add advice to verify that netstat is installed in README
2. use ss instead of netstat

Also, I think it would be a good idea to check that getLogin() does not return empty string.