📅  最后修改于: 2022-03-11 14:51:34.594000             🧑  作者: Mango
# 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