学步园

grep -n -P  'chordconquering.com/t new dream network' tmp_newDreamNetwork.txt








重点在 "-P
" 这个参数


man grep

-P, --perl-regexp

              Interpret  PATTERN  as  a  Perl  regular  expression.   This  is  highly  experimental and grep -P may warn of

              unimplemented features.