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sudo su
su postgresql

sudo su
su postgres

sudo apt update sudo apt upgrade sudo apt install -y postgresql-10 postgresql-contrib postgresql-client
[ sudo apt install -y postgresql-server pgadmin3 ] -> this you may need for metasploit
[ sudo reboot ]

sudo echo "" > /etc/postgresql/10/main/postgresql.log
sudo chown postgresql /etc/postgresql/10/main/postgresql.log
sudo chgrp postgresql /etc/postgresql/10/main/postgresql.log
sudo chmod 700 /etc/postgresql/10/main/postgresql.log

sudo apt update 
sudo apt upgrade 
sudo apt install -y postgresql-10 postgresql-contrib postgresql-client
[ sudo apt install -y postgresql-server pgadmin3 ] -> this you may need for metasploit
[ sudo reboot ]

sudo echo "" > /etc/postgresql/10/main/postgresql.log
sudo chown postgresql /etc/postgresql/10/main/postgresql.log
sudo chgrp postgresql /etc/postgresql/10/main/postgresql.log
sudo chmod 700 /etc/postgresql/10/main/postgresql.log

sudo mkdir /var/run/postgresql/10-main.pg_stat_tmp
sudo chown postgres /var/run/postgresql/10-main.pg_stat_tmp -R
sudo chgrp postgres /var/run/postgresql/10-main.pg_stat_tmp -R
sudo chmod 700 /var/run/postgresql/10-main.pg_stat_tmp -R

sudo apt remove --purge postgres*
sudo apt rempve --purge pg*
sudo apt autoremove
sudo apt autoclean
sudo apt clean
[ sudo find / -name "*postgres*" -type f -delete ] -> this may delete any backups

sudo apt remove --purge postgres*
[ sudo apt remove --purge pg ]*
sudo apt autoremove
sudo apt autoclean
sudo apt clean
[ sudo find / -name "*postgres*" -type f -delete ] -> this may delete any backups