Concatenate CSV files by taking heading first line of first file and appending all non-first-lines of remaining files.

concat_csv_files.sh

#!/bin/sh

OUTFILE='outfile.csv'

#get header from first line of first file
head -n 1 result*_01_*.csv > "$OUTFILE"

#collect bodies for concatenation and append
tail --silent --lines=+2 result*_*_*.csv >> "$OUTFILE"