sed 命令小技巧 笔记一

echo -e "a1\nb2\n\nd4 \n \ne6" | sed '/^$/d'

echo -e "First line\nLine2\nline3\nline4" | sed '2d'
echo -e "First line\nLine2\nline3\nline4" | sed '3,4d'

echo -e "First line\nLine2\nline3\nline4" | sed '/^line/'d

echo -e "First line\nLine2\nline3\nline4" | sed '/Line/i \test add text before keyword line'

echo -e "First line\nLine2\nline3\nline4" | sed '/Line/a \test add text after keyword line'

#sed -n '开始行数，结束行数p'  被截取文件
sed -n "98, 101"p ~/.bashrc