删除匹配的下一行到最后一行
[root@test200 ~]# cat test
a
b
c
d
e
f
[root@test200 ~]# sed '/c/{p;:a;N;$!ba;d}' test
a
b
c
定义一个标签a，匹配c，然后N把下一行加到模式空间里，匹配最后一行时，才退出标签循环，然后命令d，把这个模式空间里的内容全部清除。
if 匹配"c"
:a
追加下一行
if 不匹配"$"
goto a
最后退出循环，d命令删除。
删除匹配行和匹配行后的2行
[root@jiangyi01.sqa.zmf /home/ahao.mah/syslog-ng/muahao_tools]
#cat file
hello muahao
I am good
123 1
this is jack
this is jack
fffff
gg
like this
[root@jiangyi01.sqa.zmf /home/ahao.mah/syslog-ng/muahao_tools]
#sed '/muahao/,+1d' file
123 1
this is jack
this is jack
fffff
gg
like this
[root@jiangyi01.sqa.zmf /home/ahao.mah/syslog-ng/muahao_tools]
#sed '/muahao/,+2d' file
this is jack
this is jack
fffff
gg
like this