Category Archives: GNU/Linux utils

Various GNU/Linux utilities and their usage examples

Arch Linux: set a Java version
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7 May 2020

A short note about HowTo install and set a specific Java version when you have various versions installed. Will use the  archlinux-java script, see the Switching between JVM. Install a package itself, here it will be Oracle Java 14: [simterm] $ yay -S jdk :: Checking for conflicts… :: Checking for inner conflicts… [Aur: 2]… Read More: Arch Linux: set a Java version0 (0) »

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AWS Elastic Kubernetes Service: a cluster creation automation, part 2 – Ansible, eksctl
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1 May 2020

The first part – AWS Elastic Kubernetes Service: a cluster creation automation, part 1 – CloudFormation. To remind the whole idea is to create an automation process to create an EKS cluster: Ansible uses the cloudformation module to create an infrastructure by using an Outputs of the CloudFormation stack created – Ansible from a template will… Read More: AWS Elastic Kubernetes Service: a cluster creation automation, part 2… »

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AWS Elastic Kubernetes Service: a cluster creation automation, part 1 – CloudFormation
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24 April 2020

The task is: create automation to roll out an AWS Elastic Kubernetes Service cluster from scratch. Will use: Ansible: to automate CloudFormation stack creation and to execute eksctl with necessary parameters CloudFormation with NestedStacks: to create an infrastructure – VPC, subnets, SecurityGroups, IAM-roles, etc eksctl: to create a cluster itself using resources created by CloudFormation… Read More: AWS Elastic Kubernetes Service: a cluster creation automation, part 1… »

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Google Drive: using via terminal on Linux Debian 9 with insync-headless
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24 April 2020

I’d like to attach a Google Drive with my Calibre books library to a Debian host because to run the Calibre Web application, as Nextcloud with a big data not too much stable and I have around 5 GB of books (see the Calibre Web: home in-browser online-library with Nextcloud storage and Moon+ Reader on… Read More: Google Drive: using via terminal on Linux Debian 9 with… »

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Linux: processes core dumps, systemd-coredump and Debian
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14 March 2020

Need to get a dump from fro ma PHP process on Debian 9. In this post will take a Linux kernel mechanism to create and manage processes dumps. Kernel’s dumps are created in another way, check Kdump на Arch Wiki. Linux Core Dump The kernel will create a process dump if it performed an invalid… Read More: Linux: processes core dumps, systemd-coredump and Debian0 (0) »

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Linux: gnome-keyring setup as Freedesktop SecretService
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26 February 2020

Currently, I’m using KeePass as passwords, RSA-keys, and as the Freedesktop SecretService, see the KeePass: an MFA TOTP codes, a browser’s passwords, SSH keys passwords storage configuration and Secret Service integration post. The first issue I faced with during such a setup is the fact that KeePass’ database is synced between my computers (it’s database… Read More: Linux: gnome-keyring setup as Freedesktop SecretService0 (0) »

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KeePass: SSH keys passwords storage and decryption on Linux
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13 December 2019

As a follow-up to the SSH: RSA keys, and ssh-agent for SSH keys and their passwords management post. The idea now is to make simpler to work with password-protected SSH keys, to avoid the necessity to enter a password each time when you want to load a key to the ssh-agent. One of the possible… Read More: KeePass: SSH keys passwords storage and decryption on Linux0 (0) »

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KeePass: an MFA TOTP codes, a browser’s passwords, SSH keys passwords storage configuration and Secret Service integration
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12 December 2019

So, this seems to be the last one post in the whole series about passwords and SSH management in Linux. The previous parts were about: Linux: the Nextcloud client, qtkeychain and the “The name org.freedesktop.secrets was not provided by any .service files” error – I found that a keyring service is able to store SSH… Read More: KeePass: an MFA TOTP codes, a browser’s passwords, SSH keys… »

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What is: Linux keyring, gnome-keyring, Secret Service, and D-Bus
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7 December 2019

It’s a really long-read post and I wast sure if it’s better to split it into three parts or put them together. On the one side, there are keyrings, from another – D-Bus, and finally, there is a Secret Service. Eventually, I decided to keep them here together as I googled all it in the… Read More: What is: Linux keyring, gnome-keyring, Secret Service, and D-Bus0 (0) »

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SSH: RSA keys, and ssh-agent for SSH keys and their passwords management
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1 December 2019

During keyring configuration for the Nextcloud client (see the Linux: the Nextcloud client, qtkeychain and the “The name org.freedesktop.secrets was not provided by any .service files” error post) – I decided to clean up the mess in my SSH keys, as I have a lot of them and sometimes authentication became just pain. In general… Read More: SSH: RSA keys, and ssh-agent for SSH keys and their… »

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