Debian 8 basic configurations

Configure static IP address:

1. Use root access the system.

2. Edit the network configuration file:

nano /etc/network/interfaces

3. Sample static IP config:

# This file describes the network interfaces available on your system

# and how to activate them. For more information, see interfaces(5).

source /etc/network/interfaces.d/*

# The loopback network interface

auto lo

iface lo inet loopback

# The primary network interface

#changed allow-hotplug eth0

#changed iface eth0 inet dhcp

#Static IP configurations:

auto eth0

iface eth0 inet static

        address 192.168.1.200

        netmask 255.255.255.0

        network 192.168.1.0

#       broadcast 192.168.1.255

        gateway 192.168.1.100

#DNS configurations:

dns-nameservers 8.8.4.4

dns-nameservers 8.8.8.8

4. Save the file and restart network service:

service networking restart
or
/etc/init.d/networking restart

Update application package, e.g. Node.js:

1. Use root access the system or use sudo command.

2. Make sure the network is connected to the public Internet.  If needed, restart the network interface:

service networking restart

3. If curl is not installed, install it first:

apt-get install curl

4. Remove the package first:

apt-get remove nodejs

5. Get the latest source (say for v4.x):

curl -sL https://deb.nodesource.com/setup_4.x | bash -

If not using root account:

curl -sL https://deb.nodesource.com/setup_4.x | sudo -E bash -

6. Install the package:

apt-get install nodejs

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