Bash 塞德。如何更改特定图案旁边的线条

我的档案是：

DIVIDER  
Sometext_string

many  
lines  
of random  
text  
DIVIDER  
Another_Sometext_string  
many  
many  
lines  
DIVIDER  
Third_sometext_string  
....

如何按照分隔符模式更改线条

结果必须是：

DIVIDER  
[begin]Sometext_string[end]

many 
lines  
of random  
text  
DIVIDER  
[begin]Another_Sometext_string[end]

many  
many  
lines  
DIVIDER  
[begin]Third_sometext_string[end]

....

---

这可能有助于-

sed '/DIVIDER/{n;s/.*/[begin]&[end]\n/;}' file1

执行：

[jaypal:~/Temp] cat file1
DIVIDER
Sometext_string

many
lines
of random
text
DIVIDER
Another_Sometext_string
many
many
lines
DIVIDER
Third_sometext_string

[jaypal:~/Temp] sed '/DIVIDER/{n;s/.*/[begin]&[end]\n/;}' file1
DIVIDER
[begin]Sometext_string[end]


many
lines
of random
text
DIVIDER
[begin]Another_Sometext_string[end]

many
many
lines
DIVIDER
[begin]Third_sometext_string[end]

更新：

[jaypal:~/Temp] cat file1
DIVIDER
Sometext_string

many
lines
of random
text
DIVIDER
Another_Sometext_string
many
many
lines
DIVIDER
Third_sometext_string

[jaypal:~/Temp] sed '/DIVIDER/{n;s/.*/[begin]&[end]\n/;}' file1
DIVIDER
[begin]Sometext_string[end]


many
lines
of random
text
DIVIDER
[begin]Another_Sometext_string[end]

many
many
lines
DIVIDER
[begin]Third_sometext_string[end]

此版本将处理第一个分隔符后的一个空行

[jaypal:~/Temp] sed -e '0,/DIVIDER/{n;s/.*/[begin]&[end]/;}' -e '/DIVIDER/{n;s/.*/[begin]&[end]\n/;}' file1
DIVIDER
[begin]Sometext_string[end]

many
lines
of random
text
DIVIDER
[begin]Another_Sometext_string[end]

many
many
lines
DIVIDER
[begin]Third_sometext_string[end]

[jaypal:~/Temp] 

更新2:

现在没有其他问题了，所以我想如果您愿意，我可以提供另一种

awk

解决方案：）

此操作用于处理分隔符后的第一个空行-

[jaypal:~/Temp] awk '/DIVIDER/{count++;print;getline;if(count==1) sub(/.*/,"[begin]&[end]");else sub(/.*/,"[begin]&[end]\n");print;next}1' file1
DIVIDER
[begin]Sometext_string[end]

many
lines
of random
text
DIVIDER
[begin]Another_Sometext_string[end]

many
many
lines
DIVIDER
[begin]Third_sometext_string[end]

[jaypal:~/Temp] 

---

我不知道这是否只是我的sed版本，但我不得不在替换行后使用分号，这样它就不会认为结束括号是一个标志：

sed'/DIVIDER/{n；s/*/[begin]&[end]\n/；}'file1

我不太确定，但拥有它不会有什么坏处。我添加了另一个解决方案。我注意到第一个分隔符后面有一个空行。如果是这样的话，sed会在你的第一个除法器后面留下两行空白。很好的解决方案。要删除分隔符后的第一个空行以适应所有此类情况，请尝试以下操作：

。。。。；n:a；/^$/！BNs/\n/；ta}