Combine columns from many files but keep them aligned in columns-shorter left column issue

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http://www.unix.com – Hello everyone, I searched the forum looking for answers to this but I could not pinpoint exactly what I need as I keep having trouble. I have many files each having two columns and hundreds of rows. first column is a string (can have many words) and the second column is a number.The files are tab separated. Example of some rows of three files: file1.txt Code: Column1 Column2 S1        31.37 S1        31.49 S1        31.74 S10        31.13 S10        31.10 S10        (HowTos)