用户讨论:Jinzd

ifconfig

ifconfig

Usage:

ifconfig [-a] [-v] [-s] <interface> [[<AF> ] <address>]

[add <address>[/<prefixlen>]]

[del <address>[/<prefixlen>]]

[[-]broadcast [<address>]] [[-]pointopoint [<address>]]

[netmask <address>] [dstaddr <address>] [tunnel <address>]

Java

Add deb resource path:

sudo add-apt-repository "deb http://archive.canonical.com/ubuntu maverick partner"

sudo apt-get update

sudo apt install sun-java8-jdk

# remove

sudo add-apt-repository -r "deb http://archive.canonical.com/ubuntu maverick partner"

PostgreSQL

For newest Ubuntu 16.04 postgresql is ready to install:

jinzd@ubuntu:~S sudo apt install postgresql-9.5

Get postgresql ready to use, set password is the first step:

jinzd@ubuntu:~S sudo -u postgres psql template1

template1=# \password postgres;

or

jinzd@ubuntu:~S sudo -u postgres psql postgres

postgres=# \password postgres;

Create database:

jinzd@ubuntu:~S sudo -u postgres created JUniverse

Create user:

jinzd@ubuntu:~S sudo -u postgres createuser