Shell Programming and Scripting

I am facing a problem and I would be grateful if you can help me

I have a list of words like

And I have a datafile like


I want to find Patterns of “x.*x” where x are the words mentioned, meaning that each line with start with X and followed/finished by X, such as


But I need each of them to be saved in a different file so one file for “the.*the” and so on.
I would previously create a acceptfile of the words, such as


and read a normal pattern from an acceptfile using

Code:

Grep -F  -f acceptfile.txt mainfile.txt > outputfile.txt

But the problem here is that I look for a substring and not a single word and GREP acceptfile is not reading my “x.*x” if i type that in my acceptfile
On the other hand, I used to use grep for substring patterns matching

Code:

grep 'The.* of' main.txt > output.txt

but now that I have about 10 words and I want all of them to be compared to each other, I would have around 100 patterns of “x.*x” and I don't want to manually sit and put them in
I am new to unix but I am sure there should be way to do this but not yet sure how.

Note: I don't necessary need to use GREP but this is just what I am familiar with now but happy to learn new things

I would be amazing if you can help me

Thank you in advance
A-V

---------- Post updated at 09:32 AM ---------- Previous update was at 07:09 AM ----------

or it may be simpler to say i have a array or file called X

and another one called Y

the command looks like this

Code:

grep 'The.* of' A1-5word.txt| sed -n -e "s/.*\(The[^)]*of\).*/\1/p" > the-of-lines.txt

i guess i would need a loop to go through each one of the Xs and each one of the Ys and put them either in separate column or file like

I am really trying my best but dont know what to do

What is the goal, the reason you are doing this, not how you chose to do it.

It looks like you are still stuck on square zero. So let's go back and detemine your requirements. I'm sure you do not want just to play with grep or ls. You want to do something with the files, or report something in the files.

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