adm:adm
nobody:nobody
vcsa:vcsa
dbus:dbus
postfix:postfix
tcpdump:tcpdump
postgres:postgres
root:root
git:git
admin:admin
ftpuser:ftpuser
tomcat:tomcat
vagrant:vagrant
nagios:nagios
deploy:deploy
guest:guest
demo:demo
backup:backup
www:www
gpadmin:gpadmin
bsnl:bsnl
a:a
user:user
ftpadmin:ftpadmin