- SCHEDA SD
Scaricare immagine e scrivere sulla scheda sd con il comando:
dd bs=1M if=archlinux-hf-2012-09-18.img of=/dev/mmcblk0
- backup
dd if=/dev/mmcblk0 of=archlinuxarm.img bs=1M

- AMPLIARE SCHEDA SD
Now that you've got Arch on an SD card the next step is booting it up. Insert it into the Pi, connect your peripherals and you're good to go. Note that unlike Debian Arch has SSH activated by default and so you don't need to connect a monitor and keyboard as long as it's got network connectivity.
Now you probably want to resize the partition to match the SD card since there is likely to be a lot of unused/unusable space by default. Log in with username root and password root (either via SSH or with a keyboard and screen connected to the Raspberry Pi, either will work). Run "fdisk /dev/mmcblk0". Type the command 'p' and press enter. You should see two lines looking similar to this:
/dev/mmcblk0p1                     1      195312           97656        c  W95 FAT32 (LBA)
/dev/mmcblk0p2            197265        15544319         7673527+  83  Linux
Those are the current partitions. What we need to do is delete the second one and recreate it larger. Make a note of the first number on the second line (in this case 197265) and then type the command 'd' (and press enter). Choose 2. Now we create a new one with 'n' and enter 'p' for primary and 2 for partition number 2. Now we get to the first sector, and here it's important that you enter the number we took note of earlier, in this case 197265. Select the largest value for last sector. Now that we've done that enter 'w' to write and then 'q' to quit. Reboot with the command 'reboot' and once you've booted and logged in again run 'resize2fs /dev/mmcblk0p2'. It'll take a while to complete but once done you'll be able to utilise the full size of the SD card.

- AGGIORNARE
The next step is to update the system so you have the latest software running. Normally you would just need to run 'pacman -Syu' to update.

- SWAP (sconsigliato su una sd)
To create a swap file (which is a good idea in case you end up in a situation where you need one) run the following commands (taken from Arch wiki):
fallocate -l 128M /swapfile
chmod 600 /swapfile
mkswap /swapfile
swapon /swapfile
and add "/swapfile none swap defaults 0 0" to /etc/fstab.

- LOCALE
# nano /etc/locale.gen
decommentare
it_IT.UTF-8 UTF-8
poi
# locale-gen
poi
echo LANG=it_IT.UTF-8 > /etc/locale.conf
e
export LANG=it_IT.UTF-8
- tastiera italiana in console
loadkeys it
# nano /etc/vconsole.conf
KEYMAP=it

- TIMEZONE
# ln -s /usr/share/zoneinfo/Europe/Rome /etc/localtime

- AUDIO
1. Install software
sudo pacman -S alsa-utils alsa-firmware alsa-plugins
2. Turn sound device on
sudo modprobe snd-bcm2835
3. create /etc/modules-load.d/snd-bcm2835.conf
sudo echo "snd-bcm2835" >> /etc/modules-load.d/snd-bcm2835.conf
4. unmute and adjust volume with alsamixer (mine is already unmuted at this point)
sudo alsamixer
5. test sound
speaker-test -c 2
6. save adjustments
sudo alsactl store

- AMBIENTE GRAFICO
pacman -S xorg-server xorg-xinit xorg-server-utils
pacman -S mesa
pacman -Sy xf86-video-fbdev xf86-video-vesa
- Per la Tastiera italiana in ambiente grafico
create a number-*.conf file (e.g. 10-keyboard.conf) with the following content:
nano /etc/X11/xorg.conf.d/10-keyboard.conf
Section "InputClass"
    Identifier             "Keyboard Defaults"
    MatchIsKeyboard	   "yes"
    Option	           "XkbLayout" "it"
    #Option                 "XkbVariant" "colemak"
EndSection
- test dell'ambiente grafico
pacman -S xorg-twm xorg-xclock xterm
echo 'exec /usr/bin/X -nolisten tcp vt$XDG_VTNR "$@"' > ~/.xserverrc
startx
exit

- FONTS
pacman -S ttf-dejavu

- DE
pacman -S lxde
mkdir -p ~/.config/openbox
cp /etc/xdg/openbox/menu.xml /etc/xdg/openbox/rc.xml /etc/xdg/openbox/autostart ~/.config/openbox
pacman -S gamin
pacman -S leafpad obconf

LOGIN AUTOMATICO SU CONSOLE
cp /usr/lib/systemd/system/getty@.service /etc/systemd/system/autologin@.service
Once created you can link the new autologin@.service to your chosen tty, e.g. tty1, tty2, [...] tty8, etc., by specifying it as an alias in the [Install] section of the unit file. Accordingly, change the value of ExecStart in autologin@.service:
nano /etc/systemd/system/autologin@.service
[Service]
[...]
ExecStart=-/sbin/agetty --noclear -a USERNAME %I 38400
[...]
[Install]
Alias=getty.target.wants/getty@tty1.service
Tip: It is possible to change Type=idle to Type=simple and avoid delaying the execution of agetty until all jobs (state change requests to units) are completed. This option is more useful when starting X automatically. See man systemd.service for more info.
Note: Type=simple can cause systemd boot-up messages to pollute the login prompt.
Finally, you need to disable the old getty@.service for the specified tty and enable the new autologin@.service for the same tty:
# systemctl daemon-reload
# systemctl disable getty@tty1
# systemctl enable autologin@tty1
# systemctl start autologin@tty1
Warning: If you are currently in an X session on the same tty configured in the service file, starting autologin@ttyX.service will kill your X server.
To avoid errors related to display-manager.service in dmesg, you should set the default target to multi-user instead of graphical:
# systemctl enable multi-user.target


- AVVIO AUTOMATICO X
nano .bash_profile
e aggiungere
[[ -f ~/.bashrc ]] && . ~/.bashrc
export DESKTOP_SESSION=LXDE
per far funzionare xdg-open
poi aggiungere
[[ $(fgconsole 2>/dev/null) == 1 ]] && exec startx -- vt1
per far partire startx all'avvio
prima configurare xinitrc
cp /etc/skel/.xinitrc ~
e aggiungere
exec startlxde

AVVIO AUTOMATICO LXDE
Use a ~/.config/lxsession/LXDE/autostart file. This file is not a shell script, but each line represents a command to be executed, if a line begins with a @ symbol, the command following the @ will be automatically re-executed if it crashes. For example, to execute lxterminal and leafpad automatically at startup:
~/.config/lxsession/LXDE/autostart
@conky
@xbmc
Note: The commands do not end with a & symbol.
There is also a global autostart file at /etc/xdg/lxsession/LXDE/autostart. If both files are present, all entries in both files will be executed.

IP STATICO
Install ifplugd, which is required for net-auto-wired:
# pacman -S netcfg ifplugd
Copy a sample profile from /etc/network.d/examples to /etc/network.d:
# cp /etc/network.d/examples/ethernet-static /etc/network.d/ethernet-static
Edit the profile as needed:
# nano ethernet-static
Edit the NETWORKS array in /etc/conf.d/netcfg to refer to the network config file /etc/network.d/ethernet-static.
nano /etc/conf.d/netcfg
NETWORKS=(ethernet-static)
Disabilitiamo il dhcp all'avvio
systemctl disable dhcpcd@eth0.service
rm '/etc/systemd/system/multi-user.target.wants/dhcpcd@eth0.service'
e abilitiamo netcfg di partire in avvio
systemctl enable netcfg.service
ln -s '/usr/lib/systemd/system/netcfg.service' '/etc/systemd/system/multi-user.target.wants/netcfg.service'
aggiungiamo?
systemctl enable netcfg@ethernet-static
e in fine questo?
systemctl enable net-auto-wired.service

per connettere
netcfg ethernet-static
per disconnettere il profilo
netcfg down ethernet-static

editare /etc/hosts e /etc/hostname

NFS
pacman -s nfs-utils
metterlo in fstab
192.168.1.2:/nfs/stele   /media/terry   nfs   rsize=8192,wsize=8192,timeo=14,intr	0 0
e abilitare i servizi (demoni) all'avvio
systemctl enable nfsd.service rpc-idmapd.service

- BORDI NERI
nano /boot/config.txt
or if your display has some overscan:
overscan_left=-50
overscan_right=-50
overscan_top=-50
overscan_bottom=-50

-PACCHETTI LOCALI
Per sapere i pacchetti installati localmente
yaourt -Qm

-MEMORIA GPU
Edit /boot/config.txt and add or edit the following line:
gpu_mem=128
The value can be 16, 64, 128 or 256 and represents the amount of RAM available to the GPU.

CODECs e VIDEO
pacman -S libdvdcss gstreamer0.10-ffmpeg gstreamer0.10-bad gstreamer0.10-bad-plugins gstreamer0.10-ugly gstreamer0.10-ugly-plugins
compilare omxplayer-git da aur
wget https://aur.archlinux.org/packages/om/omxplayer-git/omxplayer-git.tar.gz
tar zxvf omxplayer-git.tar.gz
cd omxplayer-git
makepkg -s
pacman -U omxplayer-git

- XBMC (La compilazione richiede circa 11 ore)
Controllare se hai bisogno di spazio libero sulla scheda. Se hai bisogno libera spazio es.
pacman -Scc
assegnare il massimo della memoria alla cpu dal /boot/config.txt e riavviare (senza entrare in x) per liberarla
 wget http://aur.archlinux.org/packages/xbmc-rbp-git/xbmc-rbp-git.tar.gz
 tar zxvf xbmc-rbp-git.tar.gz
 cd xbmc-rbp-git
 makepkg -si

TAR
tar cvzf directory.tar.gz directory/

USER, SUDO
# useradd -m -G users,audio,lp,optical,storage,video,wheel,power -s /bin/bash stele
Next, add a password for your new user using /usr/bin/passwd.
# passwd stele
pacman -S sudo
visudo
decommentare l'impostazione desiderata

TASTIERA E MOUSE CONDIVISI con Synergy
installare synergy su client e server (stessa versione!)
verificare gli indirizzi su /etc/hosts
configurare il server (pc che ha connessi mouse e tastiera)
sudo nano /etc/synergy.conf
section: screens
        lety:
        berry:
end
section: links
        lety:
                left = berry
        berry:
                right = lety
end
far partire il server
synergys (oppure synergyd da arch)
e metterlo in avvio automatico
poi collegare il client
synergyc lety
per la mappatura della tastiera
setxkbmap $(setxkbmap -query | grep "^layout:" | awk -F ": *" '{print $2}')
per far partire in automatico il client synergy aggiungere il comando in .xinitrc prima di exec