How to permanently disable Bluetooth on Ubuntu 17.04 Linux.
In the upper-left-hand corner of the screen, click the "Dash" icon and type "terminal". Click on the terminal icon.
Show the current version of Linux:
$ uname -a
Linux TC605 4.10.0-26-generic #30-Ubuntu SMP Tue Jun 27 09:30:12 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
In the terminal window, run the systemctl command. Note the Bluetooth service is enabled:
$ systemctl status bluetooth
● bluetooth.service - Bluetooth service
Loaded: loaded (/lib/systemd/system/bluetooth.service; enabled; vendor preset
Active: active (running) since Sat 2017-07-08 18:34:29 MDT; 35min ago
Docs: man:bluetoothd(8)
Main PID: 872 (bluetoothd)
Status: "Running"
Tasks: 1 (limit: 4915)
CGroup: /system.slice/bluetooth.service
└─872 /usr/lib/bluetooth/bluetoothd
Jul 08 18:34:29 TC605 bluetoothd[872]: Failed to obtain handles for "Service Cha
Jul 08 18:34:29 TC605 bluetoothd[872]: Sap driver initialization failed.
Jul 08 18:34:29 TC605 bluetoothd[872]: sap-server: Operation not permitted (1)
Jul 08 18:34:29 TC605 bluetoothd[872]: Failed to set mode: Blocked through rfkil
Jul 08 18:34:40 TC605 bluetoothd[872]: Endpoint registered: sender=:1.89 path=/M
Jul 08 18:34:40 TC605 bluetoothd[872]: Endpoint registered: sender=:1.89 path=/M
Jul 08 18:35:37 TC605 bluetoothd[872]: Endpoint unregistered: sender=:1.89 path=
Jul 08 18:35:37 TC605 bluetoothd[872]: Endpoint unregistered: sender=:1.89 path=
Jul 08 18:35:40 TC605 bluetoothd[872]: Endpoint registered: sender=:1.124 path=/
Jul 08 18:35:40 TC605 bluetoothd[872]: Endpoint registered: sender=:1.124 path=/
Stop the Bluetooth service:
$ sudo systemctl stop bluetooth.service
Permanently disable the Bluetooth service:
$ sudo systemctl disable bluetooth.service
Synchronizing state of bluetooth.service with SysV service script with /lib/systemd/systemd-sysv-install.
Executing: /lib/systemd/systemd-sysv-install disable bluetooth
Removed /etc/systemd/system/dbus-org.bluez.service.
$ systemctl status bluetooth
● bluetooth.service - Bluetooth service
Loaded: loaded (/lib/systemd/system/bluetooth.service; disabled; vendor prese
Active: inactive (dead)
Docs: man:bluetoothd(8)
Jul 08 19:27:53 TC605 bluetoothd[908]: Endpoint registered: sender=:1.85 path=/M
Jul 08 19:27:59 TC605 bluetoothd[908]: Endpoint unregistered: sender=:1.85 path=
Jul 08 19:27:59 TC605 bluetoothd[908]: Endpoint unregistered: sender=:1.85 path=
Jul 08 19:28:00 TC605 bluetoothd[908]: Endpoint registered: sender=:1.123 path=/
Jul 08 19:28:00 TC605 bluetoothd[908]: Endpoint registered: sender=:1.123 path=/
Jul 08 19:30:11 TC605 systemd[1]: Stopping Bluetooth service...
Jul 08 19:30:11 TC605 bluetoothd[908]: Terminating
Jul 08 19:30:11 TC605 bluetoothd[908]: Endpoint unregistered: sender=:1.123 path
Jul 08 19:30:11 TC605 bluetoothd[908]: Endpoint unregistered: sender=:1.123 path
Jul 08 19:30:11 TC605 systemd[1]: Stopped Bluetooth service.
Restart the machine to verify the Bluetooth service does not restart.
After the machine has been restarted, open a terminal window and check the Bluetooth service:
$ systemctl status bluetooth
● bluetooth.service - Bluetooth service
Loaded: loaded (/lib/systemd/system/bluetooth.service; disabled; vendor prese
Active: inactive (dead)
Docs: man:bluetoothd(8)
Saturday, July 08, 2017
Sunday, June 18, 2017
Move Ether From Coinbase Exchange To Local Exodus Wallet
If you want to buy bitcoin or ethereum on an exchange, US residents may consider Coinbase. Coinbase also trades litecoin, in addition to bitcoin and ethereum. For deposits, Coinbase accepts credit cards and checking accounts.
If you want to open an account with Coinbase, this link will give you an extra $10 to start your Coinbase account.
After you have purchased ether in your Coinbase account, you will want to install a wallet on a local machine in order to move the ether off the Coinbase exchange. After creating a local wallet, you will transfer the ether from Coinbase to the public key of your local wallet.
We will use the Exodus wallet, because it supports multiple coins. It also supports Shapeshift, to swap to different coins.
This example uses MS Windows 10 Pro, 64 bit.
Click here to download the Exodus wallet application. For this example, choose the Windows application.
Optionally scan the downloaded file for viruses.
Double-click the downloaded file to install Exodus. It will install and show a prompt telling you it has been installed. Look for the desktop shortcut and double-click it. This will display the main Exodus screen.
On the left side of the Exodus application, click Wallet.
Press Receive and the program will show your local ethereum address.
Press the left button to copy this address into the clipboard.
Login to Coinbase and go to Send/Request.
Paste the address from the clipboard, which was copied from the Exodus applictation, into the Recipient field of Coinbase.
Choose the amount to send, and select "ETH Wallet".
Press the Send Funds button.
Enter the authentication code, and confirm the transaction.
Coinbase will show the coin has been sent.
Go to the Exodus application and look for the received coin.
Exodus allows a backup to be created once there is any amount of coin in the wallet.Backup the wallet in Exodus by pressing the Backup button on the left side of the program.
Create a password.
The next Exodus screen will display twelve words. With these words, anyone can recreate the wallet. Print out or write down the twelve word password recovery words and keep the words private to yourself.
Enter an email address to receive a recovery link. Then log in to your email account and look for the email from support@exodus.io.
If you want to send a tip, use this ethereum public key address: 0xe3964791d573bf3459C8be9c1bffB35Ce4ddBC2e
If you want to open an account with Coinbase, this link will give you an extra $10 to start your Coinbase account.
After you have purchased ether in your Coinbase account, you will want to install a wallet on a local machine in order to move the ether off the Coinbase exchange. After creating a local wallet, you will transfer the ether from Coinbase to the public key of your local wallet.
We will use the Exodus wallet, because it supports multiple coins. It also supports Shapeshift, to swap to different coins.
This example uses MS Windows 10 Pro, 64 bit.
Click here to download the Exodus wallet application. For this example, choose the Windows application.
Optionally scan the downloaded file for viruses.
Double-click the downloaded file to install Exodus. It will install and show a prompt telling you it has been installed. Look for the desktop shortcut and double-click it. This will display the main Exodus screen.
On the left side of the Exodus application, click Wallet.
Press Receive and the program will show your local ethereum address.
Press the left button to copy this address into the clipboard.
Login to Coinbase and go to Send/Request.
Paste the address from the clipboard, which was copied from the Exodus applictation, into the Recipient field of Coinbase.
Choose the amount to send, and select "ETH Wallet".
Press the Send Funds button.
Enter the authentication code, and confirm the transaction.
Coinbase will show the coin has been sent.
Go to the Exodus application and look for the received coin.
Exodus allows a backup to be created once there is any amount of coin in the wallet.Backup the wallet in Exodus by pressing the Backup button on the left side of the program.
Create a password.
The next Exodus screen will display twelve words. With these words, anyone can recreate the wallet. Print out or write down the twelve word password recovery words and keep the words private to yourself.
Enter an email address to receive a recovery link. Then log in to your email account and look for the email from support@exodus.io.
If you want to send a tip, use this ethereum public key address: 0xe3964791d573bf3459C8be9c1bffB35Ce4ddBC2e
Wednesday, August 31, 2016
Bitcoin Reading List
Minimum Viable Block Chain, by Ilya Grigorik, is an introductory paper which includes most of the required concepts.
Bitcoin and Cryptocurrency Technologies was published from Princeton and has a corresponding Coursera course. The draft version of the book is available in a free pdf.
Financial services regulation and policy. Bitcoin A Primer For Policymakers is a free pdf.
Bitcoin and Cryptocurrency Technologies was published from Princeton and has a corresponding Coursera course. The draft version of the book is available in a free pdf.
Financial services regulation and policy. Bitcoin A Primer For Policymakers is a free pdf.
Mastering Bitcoin: Unlocking Digital Cryptocurrencies is a good read from O'Reilly.
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