使用awk更改与定界符之间的模式匹配的线

some line
some other line
another line
start_delimiter
  interesting stuff
  more interesting stuff
  even more interesting stuff
end_delimiter
possibly more stuff

some line
some other line
another line
start_delimiter
  interesting stuff
  //more interesting stuff
  //even more interesting stuff
end_delimiter
possibly more stuff

awk \'/start_delimiter/,/end_delimiter/\' inputfile

awk \'/more/ {sub(/^/,\"//\")}1\'

/start_delimiter/ {inblock=1}
/end_delimiter/ {inblock=0;}
{ if (inblock==1 && (/more/)) { print \"//\" $0 } else print $0}

awk \'/^(start_delim|end_delim)/{f=f?0:1}f&&/more/{$0=\"//\" $0}1\' file

awk \'/start_delimiter/,/end_delimiter/{
  if ($0 ~ /^more/ ) { print \"//\" $0 } 
  else print $0
}
!/start_delimiter/,/end_delimiter/ print $0\' inputfile