在Mac OS X 下安装PostgreSQL
installsudo port install postgresql84 postgresql84-serverlaunch at startupsudo launchctl load -w /Library/LaunchDaemons/org.macports.postgresql84-server.plist
To create a database instance
sudo mkdir -p /opt/local/var/db/postgresql84/defaultdb sudo chown postgres:postgres /opt/local/var/db/postgresql84/defaultdb sudo su postgres -c '/opt/local/lib/postgresql84/bin/initdb -D /opt/local/var/db/postgresql84/defaultdb'
start the database server using:sudo -u postgres /opt/local/lib/postgresql84/bin/postgres -D /opt/local/var/db/postgresql84/defaultdbsudo -u postgres /opt/local/lib/postgresql84/bin/pg_ctl -D /opt/local/var/db/postgresql84/defaultdb -l logfile startbetter start ,'vim /etc/profile' or 'vim ~/.profile' ,and append 'export PATH=/opt/local/lib/postgresql84/bin/:$PATH'
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