program to merge cleaned email lists back into one new list

program to merge cleaned email lists back into one new list

i want a program that will merge any number of files back into one big new file , say i split a list of 100,000 into 4 new lists , i clean and verify each of these 4 lists , i then want to merge all of the good addresses back into one new list , txt or csv,

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Requirements

the job is worth $20.00 it must be completed in 24 hours after the job is awarded

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Skills Required

general coding