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Notes to install Python 3.12

• Download Python 3.12 source from the official website
• Extract the files
• Configure the files wih optimization enabled

./configure --enable-optimizations

• Generate installation script

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Operating System

Although this apply and proven to openSuse 15, but it is possible to apply this to other operating system.

Issue

When updating kernel to newer version, sometimes the process is halt since we are running out of /boot space. Typical error message is shown below.

installing package kernel-default-5.14.21-150500.55.19.1.x86_64 needs 2MB on the /boot filesystem

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Can't use multiple equal or not equal

❌ We cannot use more than 1 NOT_EQUAL operator

allPost, err := fsClient.Collection("posts").
    Where("name", "!=", "post").
    Where("name", "!=", "quote").
    Documents(ctx).
    GetAll()

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Convert SVG to PNG

Install ImageMagick first.

convert -density 1200 -resize 200x200 -transparent white input.svg output.png

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Checking Order when run/test a file.go

When we invoke go run file.go or go test, the compiler will check the following file sequentially. This is my observation and I don't have any valid resource to validate it.

• file *.go (file.go)
  • check import-ed module
• go.mod
  • check file exist
  • if missing, error: go.mod file not found
• check module name

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Jupyter lab use venv

Inside virtual environment:
python -m ipykernel install --user --name=virtualenv

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Network management

Source

Network Configuration - Rocky Linux 9

Introduction

NetworkManager is use to manage networking state. As of version 9, NetworkManager is replacing Network-Scripts. NetworkManager is running as service and the status can be checked using command below

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Valid Reason to Start Structural Analysis Software Project Using Fortran

1. Trivial
  - It has nice printing formatting by default
  - Less keywords to memorize
  - Long life since 1966 and will be keep alive by using modern standard
  - Compiled and fast

2. Numerical Reason
  - Supports matrix operation in simple terms compared to C/C++

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Generate Random String

Source

# Method 1: md5 Hash
echo $RANDOM | md5sum | head -c 20; echo;
996e405cb0cdd2e10299

# Method 2: UUID
cat /proc/sys/kernel/random/uuid | sed 's/[-]//g' | head -c 20; echo;
c23174ce6fa149498fc7

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Initialise a repository

git init

Basic

# Add
git add somefile.py