Uly.me

cloud engineer

Archives for December 2022

AWS List Account Aliases

Here’s how to list account aliases. I have four profiles in my credentials. I’m looping through all four and printing the aliases.

#!/bin/bash
file='results-aws-account-aliases.txt'
> $file
declare -a account=("default" "one" "two" "three")
for i in "${account[@]}"
do
    echo '----------------------' >> $file
    echo 'Account: '$i >> $file
    aws iam list-account-aliases \
    --profile $i 
done

Linux Screen

Just documenting the Linux Screen command.

Install screen first.

yum install screen
dnf install screen
apt install screen
zypper install screen

Start a new screen.

screen -S one
screen -S two
screen -S three

Detach from screen.

Ctrl+a+d

List active screens.

screen -ls 
There is a screen on:
        15575.one   (Detached)
        15581.two   (Detached)
        15593.three (Detached)
1 Socket in /var/run/screen/S-root.

Reattach to an existing screen.

screen -r one
screen -r two
screen -r three

If there’s only one active screen, you can run screen -r without the name.

screen -r

To exit or quit a screen, reattach and run exit.

screen -r three
# exit
[screen is terminating]

Linux Mint Vera

I upgraded to Linux Mint Vera from Una.

ulysses@penguin:~/Code$ neofetch
             ...-:::::-...                 ulysses@penguin 
          .-MMMMMMMMMMMMMMM-.              --------------- 
      .-MMMM`..-:::::::-..`MMMM-.          OS: Linux Mint 21.1 x86_64 
    .:MMMM.:MMMMMMMMMMMMMMM:.MMMM:.        Kernel: 5.15.0-56-generic 
   -MMM-M---MMMMMMMMMMMMMMMMMMM.MMM-       Uptime: 13 hours, 35 mins 
 `:MMM:MM`  :MMMM:....::-...-MMMM:MMM:`    Packages: 2176 (dpkg) 
 :MMM:MMM`  :MM:`  ``    ``  `:MMM:MMM:    Shell: bash 5.1.16 
.MMM.MMMM`  :MM.  -MM.  .MM-  `MMMM.MMM.   Resolution: 3840x2160 
:MMM:MMMM`  :MM.  -MM-  .MM:  `MMMM-MMM:   DE: Cinnamon 5.6.5 
:MMM:MMMM`  :MM.  -MM-  .MM:  `MMMM:MMM:   WM: Mutter (Muffin) 
:MMM:MMMM`  :MM.  -MM-  .MM:  `MMMM-MMM:   WM Theme: Mint-Y-Dark-Aqua (Mint-Y) 
.MMM.MMMM`  :MM:--:MM:--:MM:  `MMMM.MMM.   Theme: Mint-Y-Aqua [GTK2/3] 
 :MMM:MMM-  `-MMMMMMMMMMMM-`  -MMM-MMM:    Icons: Mint-Y-Aqua [GTK2/3] 
  :MMM:MMM:`                `:MMM:MMM:     Terminal: gnome-terminal 
   .MMM.MMMM:--------------:MMMM.MMM.      CPU: AMD Ryzen 7 1700X (16) @ 3.700GHz 
     '-MMMM.-MMMMMMMMMMMMMMM-.MMMM-'       GPU: AMD ATI Radeon R7 240/340 / Radeon 520 
       '.-MMMM``--:::::--``MMMM-.'         Memory: 3864MiB / 15928MiB 
            '-MMMMMMMMMMMMM-'
               ``-:::::-``

I have 2 issues out of the gate.

  1. Audio is crackling.
  2. Bluetooth does not automatically connect to my Logitech K11 keyboard.

To fix my audio issues, I have to restart pulseaudio.

#!/bin/bash
pulseaudio -k
pulseaudio --start

You may have to refresh your browser or restart your app to hear audio.

And here’s the command to connect my keyboard. I’ve provided commands how to scan, connect and pair.

#!/bin/bash
# bluetoothctl scan on
# bluetoothctl connect 00:1F:20:A8:EE:1F
# bluetoothctl pair 00:1F:20:A8:EE:1F
# bluetoothctl trust 00:1F:20:A8:EE:1F
# bluetoothctl devices
# bluetoothctl paired-devices
bluetoothctl connect 00:1F:20:A8:EE:1F

Output

ulysses@penguin:~$ bluetoothctl connect 00:1F:20:A8:EE:1F
Attempting to connect to 00:1F:20:A8:EE:1F
[DEL] Device 72:D9:FF:CC:41:78 72-D9-FF-CC-41-78
[CHG] Device 00:1F:20:A8:EE:1F Connected: yes
[CHG] Device 00:1F:20:A8:EE:1F Modalias: usb:v046DpB317d0900
[CHG] Device 00:1F:20:A8:EE:1F UUIDs: 00001000-0000-1000-8000-00805f9b34fb
[CHG] Device 00:1F:20:A8:EE:1F UUIDs: 00001124-0000-1000-8000-00805f9b34fb
[CHG] Device 00:1F:20:A8:EE:1F UUIDs: 00001200-0000-1000-8000-00805f9b34fb
[CHG] Device 00:1F:20:A8:EE:1F ServicesResolved: yes
[CHG] Device 00:1F:20:A8:EE:1F WakeAllowed: yes
[CHG] Device 00:1F:20:A8:EE:1F Paired: yes
Connection successful

The connect command performs both connect and pair.

Hoping they patch this soon so I don’t need to run them @reboot in crontab.

Linux Mint Upgrade

Here’s how to upgrade your Linux Mint Desktop.

sudo apt update
sudo apt install mintupgrade

Then run the upgrade.

sudo mintupgrade