昨夜西风凋碧树

摘要： sed -i 's/\r//g' filename.txt sed -i '/needtodel/d' filename.txt sed -i 's@old@new@g' filename.txt sed -i '10d' filename.txtsed -i '/zhangsan/, 1{//n;d}' filename.txt #删除匹配行下一行sed -n 'n;p' filename.... 阅读全文