פקודות לינוקס חשובות

PI IN THE SKY

• ps -A                                          : show all process
• sudo killall tracker                : delete all tracker processes
• sudo ./tracker                           : start a tracker process, so you can see the messages
• sudo nano /boot/pisky.txt   : edit the PITS config file
• sudo raspi-config                   : setting up raspberryPI

Trouble shooting

• cat ~/pits/tracker/gps.txt

General

• ls -la                   : see the files in the directory with all details
• sudo halt           : stop the PI computer
• sudo reboot      : restart PI computer
• pwd                     : see current directory
• top – to see the CPU utilization

Networking

• ifconfig                                                     : see the interfaces configuration
• sudo ifconfig wlan0                              : see the wireless lan configuration
  • sudo nano /etc/network/interfaces : set networking configuration
  • allow-hotplug wlan0
  • iface wlan0 inet dhcp
  • iface default inet dhcp
  • wpa-ssid "ISLAND_2.4"
  • wpa-psk "097680234"
• sudo iwlist wlan0 scan | grep SSID : see the wlan in the area
• sudo nano /etc/wpa_supplicant/wpa_supplicant.conf : advance network configuration (didnt work for me)
•  ifdown wlan0   ו  ifup
• Defining the SSIDs
  • https://www.raspberrypi.org/documentation/configuration/wireless/wireless-cli.md
• Special program for wifi interfaces
  • sudo apt-get install wicd-curses : to setup
  • Run with: sudo wicd-curses
  • using it – http://raspberrypi.stackexchange.com/questions/11631/how-to-setup-multiple-wifi-networks
  • Removing it :sudo apt-get remove –purge wicd python-widc-cli wicd-curses wicd-deamon wicd-gtk
• Must remove dhcpcd before
  • sudo systemctl disable dhcpcd
  • sudo /etc/init.d/dhcpcd stop
• Sharing WIFI from LAPTOP
  • https://anwaarullah.wordpress.com/2013/08/12/sharing-wifi-internet-connection-with-raspberry-pi-through-lanethernet-headless-mode/
• Troubleshooting WIFI –
  • http://www.raspyfi.com/wi-fi-on-raspberry-pi-a-simple-guide/
  • http://captainbodgit.blogspot.co.il/2013/03/configure-wifi-on-raspberry-pi.html
  • stopping dhcpcd – https://www.raspberrypi.org/forums/viewtopic.php?f=28&t=150124
• sending the IP address automatically via Email
  • http://cagewebdev.com/raspberry-pi-sending-emails-on-boot/
  • need to enable gmail for "less secure passwords"
  • when you copy the text to PuTTy, you need to change the " sign and ' sign

Keyboard

• sudo nano /etc/default/keyboard  : Replace UK with US

Startup commands

/etc/rc.local

# Print the IP address

_IP=$(hostname -I) || true

if [ "$_IP" ]; then

printf "My IP address is %s\n" "$_IP"

python /home/pi/Code/startup_mailer.py

fi

sudo /usr/bin/screen -d -m -S LoraGateway /home/pi/lora-gateway/gateway.sh

exit 0