Linux: How to Convert HEIC to JPEG
First, install certain utilities: sudo apt-get install libheif-examples Second, navigate to a directory where there…
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Long Boot Time Caused by “Scanning for BTRFS file system”
More info about swap files: here Step 1: turn off quiet boot to observe the…
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Linux: how to bypass login keyring prompts
Error Message: Something along the line of 'keyring default keyring but it is locked' Resolution:…
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Linux: how to make automounts persistent
# Step 1: discover the device using its current mount path mountPath=/media/kim/Data findmnt | grep…
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How to Install Brother Printer on a Linux machine (Debian, Ubuntu, Mint)
Below is an example of the installation sequence using a known driver URL: $ wget…
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Linux Cheat Sheet
Below is a quick reference to the most useful commands and techniques for a Linux…
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How to Upgrade Kubernetes Ingress Nginx Deployed via Helm
# How to upgrade ingress-nginx: helm upgrade --reuse-values ingress-nginx ingress-nginx/ingress-nginx -n ingress-nginx # Sample output of a failure scenario: brucelee@k8-controller:~$ helm…
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Quick Note on Tomcat with NGINX
Below is a quick short-hand note to remind oneself to setup proxying properly between Tomcat…
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Kubernetes Broken Due To Unknown Reasons
Problem 1: Admin User Unable to Login to Cluster via Controller (Master Node) # SSL…
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Intermittent Ping Request Time Out Due to An Outdated ARP Table Entry of a Ubuntu Server
Scenario: - Server A and Server B hardware are of the same model and capacity-…
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Linux: How To Create XDG-MIME Association for Google Voice in Unbuntu
Google Voice is a great application that is available on IOS and Android. However, it…
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Linux: How To Use Dig
Checking Name Server(s) kim@kim-linux:~$ dig @8.8.8.8 microsoft.com ; <<>> DiG 9.16.1-Ubuntu <<>> @8.8.8.8 microsoft.com ;…
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Bash Shell: Rename Files – Prepend and Append
Pre-pending # Prepend any file that doesn't have the word "/thumbs_" in its full path…
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Installing Simple NFS GUI (for Ubuntu / Mint / Debian)
Overview: Simple NFS GUI is a Linux application that automates the whole NFS share configuration…
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Linux: Performing Speed Test via Command Line Interface (CLI)
Install Speed-Test (if not already installed): kimconnect@linux-client:~$ sudo apt install speedtest-cli Reading package lists... Done…
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Bash: How To Join Array With Comma Delimiter
# The following function joins an array of numbers # Limitation: the delimiter is expected…
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Puppet Client Server Lab Setup
Server # Setup client machine name sudo vim /etc/hosts ## Insert this line ## xx.xx.xx.xx…
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How to Install Selenium for Python on Windows or Linux
Windows # This error would occur if pip is not up to date PS C:\WINDOWS\system32>…
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How To Run Python Interactive Command Line Mode (CLI)
Windows PS C:\WINDOWS\system32> python Python 3.8.0 (tags/v3.8.0:fa919fd, Oct 14 2019, 19:37:50) [MSC v.1916 64 bit…
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Disable and Enable Sleep Mode on a Linux Workstation
The following commands would work on any Linux machine with SystemD (Ubuntu, Linux Mint, Redhat,…
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