Merging Multiple CSV Files without merging the header I need to merge multiple .CSV files (using the cat command) but without copying the header for each file. 

What's the best way to accomplish this task?
You'll need more than the cat command, as described here:

Say you have 3 CSV-files: file1.csv, file2.csv, and file3.csv and want to join them to bigfile.csv and your header is always (only) the first line, then use 

either (keep header from first file "file1.csv"):

cat file1.csv &lt;(tail +2 file2.csv) &lt;(tail +2 file3.csv) &gt; bigfile.csv


or (remove header from all files who's names begin with "file"):

awk 'FNR &gt; 1' file*.csv &gt; bigfile.csv