Sed追加到匹配段的最后一行,及匹配问题，继续请教高手

Iinvincible

继续请教各路高手！

Herowinter

回复 21# Iinvincible

1. sep='[abcd:/efg]';var='!!!!!!';sed '/'"$sep"'/{:1;n;$s/.*/&\n'"$var"'/;/^\s*$/!b1;s/.*/'"$var"'&/}' i
   
2. 
   
3. [abcd:/efg]
   
4. 1111111111
   
5. 22222222222
   
6. !!!!!!
   
7. 
   
8. [abcd:/efg]
   
9. 33333333
   
10. 5555555555
    
11. !!!!!!
    
12. 
    

复制代码

1. cat i
   
2. [abcd:/efg]
   
3. 1111111111
   
4. 22222222222
   
5. 
   
6. 
   
7. [abcd:/efg]
   
8. 33333333
   
9. 5555555555
   

复制代码

Iinvincible

回复 22# Herowinter

多谢，貌似这种方式我换了[abcd:/]这样的变量就匹配不上了呀。

[root@root]# sep='[abcd:/efg]';var='!!!!!!';sed '/'"$sep"'/{:1;n;$s/.*/&\n'"$var"'/;/^\s*$/!b1;s/.*/'"$var"'&/}' abc.txt
###
this is a test file
[abcd:/]
this is a test file
this is a test file
this is a test file
this is a test file
###
this is a test file
this is a test file
this is a test file
this is a test file
this is a test file
this is a test file
this is a test file
his is a test file
[abcd:/efg]
1111111111
22222222222
this is a test file
!!!!!!
[root@root]# sep='[abcd:/]';var='dddddd!!!!!!';sed '/'"$sep"'/{:1;n;$s/.*/&\n'"$var"'/;/^\s*$/!b1;s/.*/'"$var"'&/}' abc.txt
###
this is a test file
[abcd:/]
this is a test file
this is a test file
this is a test file
this is a test file
###
this is a test file
this is a test file
this is a test file
this is a test file
this is a test file
this is a test file
this is a test file
his is a test file
[abcd:/efg]
1111111111
22222222222
this is a test file
dddddd!!!!!!

继续请教各路高手，现在不要求必须插到匹配变量这个段的最下面了，只要能匹配上，并且能插到匹配后就可以了。
   

Herowinter

回复 23# Iinvincible
首先，我之前的写法是有点问题，因为你的分割符
[abcd:/]中 [  /  ]都是元字符，要转义；
还有我当时写的时候，看你的文本段落之间
区分是以空行的，你先在改成####了？


   

Iinvincible

回复 24# Herowinter


恩，原来是###这个，现在不以###或者空行左为段落标记了，都是[adfad:/]或者[adsfadsf:/fdfasdfasfd/adfsf]这种格式做段落标记了。所以我想只要变量传递给sed使用的时候，sed把这个变量作为一个固定的字符串，不进行任何转义并且能工作（精确匹配），就满足需求了。

   

Herowinter

回复 23# Iinvincible

1. sep='\[abcd:\/\]';var='dddddd!!!!!!';sed '/'"$sep"'/{:1;n;$s/.*/&\n'"$var"'/;/^\s*$/!b1;s/.*/'"$var"'&/}' i
   
2. ###
   
3. this is a test file
   
4. [abcd:/]
   
5. this is a test file
   
6. this is a test file
   
7. this is a test file
   
8. this is a test file
   
9. dddddd!!!!!!
   
10. ###
    
11. this is a test file
    
12. this is a test file
    
13. this is a test file
    
14. this is a test file
    
15. this is a test file
    
16. this is a test file
    
17. this is a test file
    
18. his is a test file
    
19. 
    
20. [abcd:/efg]
    
21. 1111111111
    
22. 22222222222
    
23. this is a test file

复制代码

1. ###
   
2. this is a test file
   
3. [abcd:/]
   
4. this is a test file
   
5. this is a test file
   
6. this is a test file
   
7. this is a test file
   
8. 
   
9. ###
   
10. this is a test file
    
11. this is a test file
    
12. this is a test file
    
13. this is a test file
    
14. this is a test file
    
15. this is a test file
    
16. this is a test file
    
17. his is a test file
    
18. 
    
19. [abcd:/efg]
    
20. 1111111111
    
21. 22222222222
    
22. this is a test file
    

复制代码

Iinvincible

回复 26# Herowinter

除了用sed还有别的命令可以实现吗？我现在要做的就是弄一个shell变量，然后匹配这个变量，如果匹配上就在下面插入新的变量，你的方法需要用到反斜杠，我不可能每个变量都受到加个反斜杠啊

   

zxy877298415

回复 13# ly5066113
根据大师的方法又改了改，不知道有没有不妥的地方。
[root@sinosoft19 ~]# sed -e '1!{/^##/s/.*/111111\n&/}'  -e  '$ a\111111'  a
###
this is a test file
111111
###
this is a test file
dsafsafdsdaf
111111



   

Herowinter

回复 27# Iinvincible
awk我可以写类似的，用index来判断当前行中是不是含有你想要的分割符，
但这种判断也有一定程度的不严谨性，它不保证当前行仅含有该分隔符。

1. sep='[abcd:/]';var='!!!!!ddddd';awk -vsep=$sep -vvar=$var 'index($0,sep)>0{k=1} k&&/^[[:space:]]*$/{k=0;print var} END{if(k)print var}1' i
   
2. 
   
3. ###
   
4. this is a test file
   
5. [abcd:/]
   
6. this is a test file
   
7. this is a test file
   
8. this is a test file
   
9. this is a test file
   
10. !!!!!ddddd
    
11. 
    
12. ###
    
13. [abcd:/efg]
    
14. this is a test file
    
15. this is a test file
    
16. this is a test file
    
17. this is a test file
    
18. this is a test file
    
19. this is a test file
    
20. this is a test file
    
21. his is a test file
    
22. 
    
23. [abcd:/]
    
24. 1111111111
    
25. 22222222222
    
26. this is a test file
    
27. !!!!!ddddd
    
28. 
    

复制代码

1. cat i
   
2. ###
   
3. this is a test file
   
4. [abcd:/]
   
5. this is a test file
   
6. this is a test file
   
7. this is a test file
   
8. this is a test file
   
9. 
   
10. ###
    
11. [abcd:/efg]
    
12. this is a test file
    
13. this is a test file
    
14. this is a test file
    
15. this is a test file
    
16. this is a test file
    
17. this is a test file
    
18. this is a test file
    
19. his is a test file
    
20. 
    
21. [abcd:/]
    
22. 1111111111
    
23. 22222222222
    
24. this is a test file
    

复制代码