Unix Linux: How to search text stored in a variable?

Unix Linux: How to search text stored in a variable? Helpful? Please support me on Patreon: With thanks praise to God and with thanks to the many people who have made this project possible! Content except music images licensed under cc by-sa 3.0 Music: Images: others With thanks to user codeforester user alhelal and the Stack Exchange Network Trademarks are property of their respective owners. Disclaimer: All information is provided AS IS without warranty of any kind. You are responsible for your own actions. Please contact me if anything is amiss at Roel D.OT VandePaar A.T gmail.com.,

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