I am reading from text files that contain mostly numbers, but every so often there are rows of text (I think that the files were merged and they still contain the headers). When I read from the file I want to create an array with the numerical data and not the text. What command do I use to only collect the numbers? 
Updated: 
The files are kinda like this

head	head 	head
num	num	num
num	num	num
head	head 	head
num	num	num
num	num	num
The files are tab separated. From what I have seen, the headers are similar but vary with different files. The infomation will be put into an array. Also, the first column contains numbers with decimals. Will that make a difference?

In reply to Collect numbers without the text by ITmajor

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