Bash retorne apenas a primeira linha que contém a partida
# Basic syntax:
grep -m 1 "pattern" input_file.txt
# Where -m is the maximum number of matching lines to return, i.e. stop
# reading the file after m matches
# Note, this is more efficient than piping to head because there you
# always read the whole file even if you're only looking for m matches
Charles-Alexandre Roy