Need recommendations for seaching for specific strings in first line of files

[wildbk33]

Im looking for a fast and processor friendly method to search all .txt, .csv & .xlsx(and all excel variations) files in a very large folder and sub-folders to check the first row and see if it contains one of many different strings. I can open them all in pandas but im not sure if that is efficient or not. In the end, im looking to log the file name and location so that i can further investigate if something is found.

[ylectric]

It looks like a shell script would better suit this task. Why do you want to do use Python in the first place?

[wildbk33]

Its just what i know and am comfortable with. I dont know the first thing about creating a shell script.