Dear R'sians..
I apologize if this topic has been beaten to death and hope that hawks don't
pounce on me!

Could you please suggest an efficient way to filter rows from 500+ text
files (some with 30000+ rows with multiple section table headers) residing
in several folders?  I guess probably "scan" is the fastest way to scan a
file, but, I noticed it sometimes takes a long time when reading large text
files.

Would really appreciate your suggestions.

Regards,
Santosh

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