====== Raspberry Pi 2 ======
<code>$ lscpu
Architecture:          armv7l
Byte Order:            Little Endian
CPU(s):                4
On-line CPU(s) list:   0-3
Thread(s) per core:    1
Core(s) per socket:    4
Socket(s):             1
Model name:            ARMv7 Processor rev 5 (v7l)
CPU max MHz:           900,0000
CPU min MHz:           600,0000</code>
===== Installation =====

<code>$ sudo dd bs=4M if=2015-09-24-raspbian-jessie.img of=/dev/sdX</code>

===== Initial Configuration =====
  - Edit /boot/config.txt.<code>$ sudo nano /boot/config.txt
disable_overscan=1
hdmi_force_hotplug=1
hdmi_group=2
hdmi_mode=48
hdmi_drive=2
config_hdmi_boost=4
start_x=0
gpu_mem=8
dtparam=spi=off
dtparam=i2c_arm=off
max_usb_current=1 # maximum current for usb</code>
  - Run raspi-config.<code>$ sudo raspi-config</code>Please select each option that you interested in to config.
    * Expand Filesystem.
    * Change User Password.
    * Boot Options: B1 Console.
    * Internationalisation Options: Change Locale and Change Timezone.
    * Advanced Options: A2 Hostname, A3 Memory Split, A6 SPI, A7 I2C, A8 Serial.
===== Updating and Upgrading =====

  - Update packages index from official repository. <code>$ sudo apt-get update</code>
  - Upgrade installed packages. <code>$ apt-get upgrade</code>
===== Package Management =====

  - List installed packages and save it to a file. <code>$ dpkg-query --show -f '${Package}\n' > pkgs.list</code>
  - Edit the file and let the names of packages which you want to remove in it, i.e. graphical environment, applications and friends.
  - Run 'apt-get autoremove' to remove unneeded packages. <code>$ sudo apt-get autoremove</code>
  - Install some packages. <code>$ sudo apt-get install screen vrms</code>
===== Custom Configuration =====

  - Disable triggerhappy. <code>$ sudo systemctl disable triggerhappy</code>
  - Edit /etc/bash.bashrc <code>$ sudo nano $HOME/.bashrc
PS1="\[\033[01;32m\]\u@\h\[\033[00m\]:\W \[\033[01;34m\]\A \[\033[00m\]\`if [ \$? == 0 ]; then echo \:\); else echo '\[\033[0;31m\]:('; fi\`\[\033[00m\] "</code>
  - Disable password authentication for SSH.
    * Generate authentication key in the machine which you want to login from, and copy the result to the Raspberry. <code>$ ssh-keygen
$ ssh-copy-id user@raspberry</code>
    * Edit sshd_config and restart sshd.<code>$ sudo nano /etc/ssh/sshd_config
PasswordAuthentication no</code><code>$ sudo systemctl restart ssh</code>

===== Debmirror =====

  * Install debmirror. <code>$ sudo apt-get install debmirror</code>
  * Edit debmirror scripts. <code>$ nano debmirror-debian
$ nano debmirror-raspbian</code>
  * Find the Debian and Raspbian archive keyrings on their official repositories respectively.
  * Add Debian and Raspbian archive keyrings. <code>$ gpg --keyring debian-archive-keyring.gpg --export|gpg --no-default-keyring --keyring trustedkeys.gpg --import
$ gpg --keyring raspbian.public.key --export|gpg --no-default-keyring --keyring trustedkeys.gpg --import</code>
  * List the added keys. <code>$ gpg --list-keys --with-colons</code>
  * Test the scripts by running them.
  * Add crontab. <code>$ nano /etc/cron.d/debmirror or /etc/crontab</code>
  * Restart crontab service. <code>$ sudo systemctl restart cron</code>
===== Storage =====

  * # mkfs.ext4 /dev/sda1
  * # mkdir /media/dir
  * # mount /dev/sda1 /media/dir/
  * # nano /etc/fstab

===== Cron =====

$ sudo nano /etc/crontab
$ sudo service cron restart

===== Wireless =====

  - # cd /etc/network
  - # cp interfaces interfaces.orig
  - # nano interfaces<code>auto lo eth0

iface lo inet loopback
iface eth0 inet dhcp

#iface wlan0 inet static
#      address 192.168.1.4
#      netmask 255.255.255.0
#      gateway 192.168.1.24
#      dns-nameservers 208.67.222.222 208.67.220.220
#      wpa-ssid SSID
#      wpa-psk</code>
  - # wpa_passphrase SSID passphrase >> interfaces
  - # nano interfaces
  - # service networking restart
  - wlanup.sh

===== Lighttpd =====

  * apt-get install lighttpd php5-cgi
  * $ sudo mv 10-dir-listing.conf ../conf-enabled/
  * $ sudo service lighttpd restart
  * # systemctl restart lighttpd.service
  * $ sudo ln -s /media/dir /var/www/dir
  * <?php phpinfo(); ?>
  * lighty-enable-mod dir-listing
  * lighty-enable-mod fastcgi
  * lighty-enable-mod fastcgi-php
  * lighty-enable-mod mod-rewrite
  * lighty-enable-mod accesslog
  * <code>server.modules = (
        ...
        "mod_rewrite",
        ...
)
...
$HTTP["host"] == "stwn.duniasemu.org" {
        server.document-root = "/home/user/public_html/"
}
</code>
===== Managed DNS =====
  - Change nameservers in your domain panel
  - Add hosts in your managed DNS panel, i.e. CNAME
  - Add CNAME in Pagekite

===== MariaDB =====
  * mysql -u root -p
  * create database db
  * grant all on db.* to 'db'@'localhost' identified by 'greatpassword';

===== PHP =====

  * opcache/xcache

===== systemctl =====
  * systemctl enable/disable [service]
  * systemctl start/stop/restart/status [service].service

===== Applications =====
  * aria2

  * screen -S tes
  * screen -r tes