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Linux Security

SOLVED: Error apt update – NO_PUBKEY 78BD65473CB3BD13

Error apt update - NO_PUBKEY 78BD65473CB3BD13 Linux

If after the linux apt update command you receive an error about NO_PUBKEY, similar to what is seen below: root@epyc:~# apt update Hit:1 http://de.archive.ubuntu.com/ubuntu focal InRelease Hit:2 http://ppa.launchpad.net/ondrej/php/ubuntu focal InRelease Get:3 http://security.ubuntu.com/ubuntu focal-security InRelease [114 kB] Get:4 http://de.archive.ubuntu.com/ubuntu focal-updates InRelease [114 kB] Ign:5 http://dl.google.com/linux/mod-pagespeed/deb stable InRelease Get:6 http://dl.google.com/linux/mod-pagespeed/deb stable Release [2154 B] Get:7 http://dl.google.com/linux/mod-pagespeed/deb stable Release.gpg […]

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Linux Security Useful

SOLOVED: signatures were invalid EXPKEYSIG 97BD1A0133449C3D Gerardo Orellana

EXPKEYSIG 97BD1A0133449C3D Gerardo Orellana ERROR

If after the linux apt update command you receive an error similar to what is seen below: root@epyc:~# apt update Get:1 http://security.ubuntu.com/ubuntu focal-security InRelease [114 kB] Ign:2 http://dl.google.com/linux/mod-pagespeed/deb stable InRelease Hit:3 http://ppa.launchpad.net/ondrej/php/ubuntu focal InRelease Get:4 http://dl.google.com/linux/mod-pagespeed/deb stable Release [2154 B] Hit:5 http://de.archive.ubuntu.com/ubuntu focal InRelease Get:6 http://dl.google.com/linux/mod-pagespeed/deb stable Release.gpg [819 B] Get:7 http://de.archive.ubuntu.com/ubuntu focal-updates InRelease [114 […]

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Useful Wordpress

W3 Total Cache HTTP ERROR 500, Call to undefined function W3TC\wp_unslash()

w3-total-cache fatal-error-500

At the last update for W3 Total Cahe to Version 2.2.3 we reached the situation that the site no longer works, it returns a classic HTTP ERROR 500 error. The only solution to restore operation was to manually delete the entire cache plugin folder /wp-content/plugins/w3-total-cache and the object-cache.php + db.php files from /wp-content/ folder. The error […]

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Broken Internet Privacy

Your brain is hacked! Become the master of your thoughts.

Brain, Hack

If you are curious to know how you are constantly fooled and deceived by the technology around you, below are some useful links (with interesting articles) that will reveal your reality and show you the reason why you became a consumer, a slave of system and why money will never get you everything you “think […]

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Linux Servers

Fixing kernel error AMD-Vi IO_PAGE_FAULT – Linux

IO linux Error
aitoff / Pixabay

Without any clear reason, today an error appeared on my home server, in fact the server crashed and did not respond to any commands, the only option was the hardware reset, from the button! The server is a HTPC, with remote access (headless server), based on a Ryzen 2400G processor, 16GB Ram, 1xNVMe, 1xSSD, 4xHDDs […]

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Linux Useful

Hot to find your Linux Kernel Version

Linux OS Server

Below are the usual 4 Commands to Find Linux Kernel Version uname uname -r # find Linux kernel version uname -a # for all information related to kernel version, lsb_release lsb_release -r # for the exact version lsb_release -a # for all information related to the Ubuntu version, lsb_release -sr # distribution version number: proc/version cat /proc/version # details about for […]

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Linux Servers Useful

How to Update Linux Kernel to 5.5.0

Kernel, Linux O(S

To upgrade to linux 5.5.0 kernel, you can perform the following steps: 1st) Download the following files to an empty folder (for 64bit & generic kernel): wget https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.5/linux-headers-5.5.0-050500_5.5.0-050500.202001262030_all.deb wget https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.5/linux-headers-5.5.0-050500-generic_5.5.0-050500.202001262030_amd64.deb wget https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.5/linux-image-unsigned-5.5.0-050500-generic_5.5.0-050500.202001262030_amd64.deb wget https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.5/linux-modules-5.5.0-050500-generic_5.5.0-050500.202001262030_amd64.deb 2nd) execute the command: sudo dpkg -i *.deb 3rd) In the end, after the installation has taken place, all you have […]

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Linux Servers

Stop Random Standy/Sleep in Ubuntu-Linux Server

Linux Sleep

My Ubuntu Server 18.04, is without a monitor / keyboard connected (headless server) and has been running for several years, but today I updated to the latest kernel version because I couldn’t find the solution to a problem that suddenly appeared and without any apparent cause: AMD-Vi IO_PAGE_FAULT error. From what I found online, it […]

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Linux Useful

Automatic REBOOT if needed after apt-get upgrade – Linux

Server Disk Drive Tools Linux Format

Sometimes after the execution of the apt-get upgrade command is finished, a restart is required, but this is not displayed after the command is completed, but you have to do it manually. To do this, you need to check the existence of the /var/run/reboot-required file and then restart the system if the file exists. To […]

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Networks Technology

Wifi Access Points – Aruba Networks Resources: CLI, Reset, Drivers, Passwords

Aruba-Wifi-AP, HP-Networks

Factory Reset Aruba – 360 Series https://community.arubanetworks.com/community-home/digestviewer/viewthread?MID=19504#bmab713447-5f8e-4bc2-bd3c-4b1c2028dc1e Aruba Networks Default Usernames & Passwords https://www.router-reset.com/default-password-ip-list/Aruba-Networks Aruba Command Line Interface (CLI) list https://www.arubanetworks.com/techdocs/Instant_41_Mobile/Advanced/Content/CLI_commands/Accessing%20Instant%20CLI.htm ArubaOS 8.x Command-Line Interface Reference Guide https://www.arubanetworks.com/techdocs/CLI-Bank/Content/landing-pages/aos8-home.htm USB Console drivers https://community.arubanetworks.com/blogs/esupport1/2020/10/19/usb-console-drivers Source Mirror: https://robertvicol.com/tech/aruba-network-resources-wifi-access-point-cli-reset-drivers-passwords/