コメントを削除してdiff comment $ diff <(grep -v -e "^#" -e "^$" conf.old ) <(grep -v -e "^#" -e "^$" conf.new) コメント行、空行を除いてdiff - Qiita # の前の空白も考慮 $ diff <(grep -v -e "^[[:space:]]*#" -e "^$" conf.old ) <(grep -v -e "^[…