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disable autostarted services

sudo systemctl disable bonescript-autorun.service bonescript.socket node-red.socket nginx.service cloud9.socket

share internet from host by USB

on BBB

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/*
 * bbb_eeprom.c  Read Model & SerialNo from BeagleBone Black's EEPROM via i2c
 *
 * Compile with:
 *     cc bbb_eeprom.c -o bbb_eeprom
 *
 * Winston Smith <[email protected]>
 *
 * History:
 *   2014-05-01  Initial Implementation for FreeBSD

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Target machine is raspberry pi zero, running raspbian 10 buster and zsh.

--color=on can fix the color in terminal.

-R UTF8 can fix the character display problem, like lines in tree.

minicom --color=on -8 -b 115200 -R UTF8 -D /dev/ttyUSB0

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#!/bin/bash
# Simple command to display the wireless strenght signal
#
clear
while x=1
  do /System/Library/PrivateFrameworks/Apple*.framework/Versions/Current/Resources/airport -I \
    | grep CtlRSSI \
    | sed -e 's/^.*://g' \
    | xargs -I SIGNAL printf "\rWifi dBm: SIGNAL"
  sleep 0.5

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#!/bin/sh
ip=1
while [ $ip != "254]; do
  ping 192.168.0.$ip -c 2 | grep -q "ttl=" && echo "192.168.0.$ip yes" || echo "192.168.0.$ip no"
  ip=`expr "$ip" "+" "1"`
done

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This command will add your network parameters to the configuration file of wpa_supplicant

sudo -s
wpa_passphrase YOUR_SSID YOUR_PASSWORD >> /etc/wpa_supplicant/wpa_supplicant.conf

If the SSID of the network is hidden additional step need to be done:

sudo vim /etc/wpa_supplicant/wpa_supplicant.conf

Update what you just added scan_ssid=1 in your network parameters, such as from

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Important reference http://www.tcpdump.org/manpages/pcap-filter.7.html

wlan addr1 00:e0:b9:7c:3b:b1 || wlan addr2 00:e0:b9:7c:3b:b1 || wlan addr3 00:e0:b9:7c:3b:b1
|| wlan addr4 00:e0:b9:7c:3b:b1

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#!/bin/sh
#
# Put this file to /etc/pm/sleep.d/
# chmod +x /etc/pm/sleep.d/99_ssh_keep_awake.sh
#
#
# Thanks to https://askubuntu.com/questions/521620/prevent-machine-from-sleeping-when-ssh-connections-are-on
#

ip=`w -h | awk '{print $1,$2,$3}' | grep -oE '[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}'`

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#!/bin/bash

i="0"

while [ $i -lt 10000 ]
do
    # osascript -e 'tell app "System Events" to display dialog "Dear Researchs:  This is the first warning. Please stop playing games in the lab. \n IGS"'
    # afplay /System/Library/Sounds/Basso.aiff
    # say "b"
    # echo -e "\a"