pl suggest any book or tutorial for linux scripting from start
with practice examples

google and duckduckgo what I know about

The book The Linux Command Line by William Shotts has dedicated the dozen or so chapters in its fourth section to writing shell scripts. I'd recommend ordering a paper copy of the latest edition since it is much more practical to work with along side the computer, especially when learning something new.

I would also recommend working through sections 1 through 3 at least superficially first, even if they would just be review, before then digging into section 4. It will get you going with shells scripts and if you go through section 4 carefully, it you can actually learn quite a bit more than just the basics.

thank for ur suggestion

If you have a sysvinit-based distro, it's useful to work your way through the startup scripts, working out how they do what they do.

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What is commonly understood as linux scripting? Is it the knowledge of bash or some sort of understanding the topology of features and how best to interact with them in general?

You've been working with Linux for five years now, and have even said before you used tldp to learn about bash and scripting:
https://www.linuxquestions.org/quest...wn-4175665189/

A script is pretty much ANYTHING that is executed in a file, be it system commands, binaries, logic loops, etc. And can be bash, zsh, csh, or other languages.
Read the LQ Rules about text-speak, and not using it, please.

Yes i don't know how much i could contribute to this thread with my humble knowledge but the bash scripting guides there are definatley very good.
Scripting seems like a flexible concept to me, i think many things that seem complicated at first can be done by a few words in the right file. I think the first thing to do before writing a script is defining what i want to achive with it.

You are exactly right. ANY computer program requires planning and thought about the task to be accomplished, the tools to use (which may include a simple script, another already existing app, the language to to be used, etc.), and the steps required. A shell script requires at least a basic knowledge of the shell language and what it may do. Thus the suggestion by @Turbocapitalist to study and learn before possibly doing some harm by lack of knowledge.

Very old but still very good about not only about shell, but also about sed, awk, tr, grep and other tools.
https://www.amazon.com/LINUX-Shell-P.../dp/B01JXPVAUG

Also old but very good: Garrels's Bash Guide for Beginners and Cooper's Advanced Bash-Scripting Guide.