My complete process of generating OSMs from POLYs on DigitalOcean servers

osmosis_on_digitalocean.sh

# Server
apt-get update
apt-get install -y python-software-properties
add-apt-repository -y ppa:webupd8team/java
apt-get update
apt-get install -y oracle-java7-installer sysstat convmv ruby1.9.3
wget http://bretth.dev.openstreetmap.org/osmosis-build/osmosis-latest.tgz
mkdir osmosis
tar -xvzf osmosis-latest.tgz -C osmosis
chmod a+x osmosis/bin/osmosis
rm osmosis-latest.tgz
mkdir poly source done
cd source
wget http://download.geofabrik.de/SUBREGION/COUNTRY-latest.osm.pbf
cd ~/poly

# Locally
scp -C ~/PATHTO/REGION.zip root@IP:/root/poly

# Server
unzip REGION.zip
rm REGION.zip
mv REGION/* .
rmdir REGION
convmv -r -f utf8 -t utf8 --nfc --notest .
cd
ruby run.rb
tar -czf done.tar.gz done/

# Locally
scp -C root@IP:/root/done.tar.gz .