1. Shell Best Practice 

    #!/bin/bash
# =====================================================================
# Script Name: example_script.sh
# Description: Template for a production-ready shell script
# =====================================================================

# Enable Strict Mode
# Exit on error, treat unset variables as errors, and fail on errors in pipelines.
set -euo pipefail
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  2. Linux Using Notes

    Flush DNS cache

    sudo resolvectl flush-caches

    Install dynamic libs *.so

    After installing, use ldconf to refresh symbolic links and caches, or apps may not find your newly installed *.so.

    rsync vs scp

    They are similar tools but you may prefer to use one over another in certain cases:

    • scp is …
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  3. Tmux Notes

    Common Sense

    Tmux is an open-source terminal multiplexer for Unix-like operating systems. It allows multiple terminal sessions to be accessed simultaneously in a single window. It is useful for running more than one command-line program at the same time.

    Terms:

    • Session: A session can have multiple windows.
    • Window: A window …
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