sed-文本增加内容常用方法记录
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[root@nagios test]# cat quote.txt
The honeysuckle band polayed al ngint long for only $90.
It was an evening of splendid music and company.
Too bad the disco floor fell through at 23:10.
The local nurse Misss P.Neave was in attendance.
例子：第一行前面增加内容
[root@nagios test]# sed '1i --->APPEDED TEXT<---' quote.txt
--->APPEDED TEXT<---
The honeysuckle band polayed al ngint long for only $90.
It was an evening of splendid music and company.
Too bad the disco floor fell through at 23:10.
The local nurse Misss P.Neave was in attendance.
2、第n行后面增加内容（na）
例子：第三行后面增加内容
[root@nagios test]#
sed '3a --->APPEDED TEXT<---' quote.txt
The honeysuckle band polayed al ngint long for only $90.
It was an evening of splendid music and company.
Too bad the disco floor fell through at 23:10.
--->APPEDED TEXT<---
The local nurse Misss P.Neave was in attendance.
例子：最后一行后面增加内容
[root@nagios test]# sed '$a --->APPEDED TEXT<---' quote.txt
The honeysuckle band polayed al ngint long for only $90.
It was an evening of splendid music and company.
Too bad the disco floor fell through at 23:10.
The local nurse Misss P.Neave was in attendance.
--->APPEDED TEXT<---
3、附加文本(a)
[root@nagios test]# sed '/^Too/a\ --->APPEDED TEXT<---' quote.txt
The honeysuckle band polayed al ngint long for only $90.
It was an evening of splendid music and company.
Too bad the disco floor fell through at 23:10.
--->APPEDED TEXT<---
The local nurse Misss P.Neave was in attendance.
4、插入文本(i)
[root@nagios test]# sed '/^Too/i\ ---> INSERTED TEXT<---' quote.txt
The honeysuckle band polayed al ngint long for only $90.
It was an evening of splendid music and company.
--->INSERTED TEXT<---
Too bad the disco floor fell through at 23:10.
The local nurse Misss P.Neave was in attendance.
5、修改文本(c)
[root@nagios test]# sed '/^Too/c\ --->CHANGED TEXT<---' quote.txt
The honeysuckle band polayed al ngint long for only $90.
It was an evening of splendid music and company.
--->CHANGED TEXT<---
The local nurse Misss P.Neave was in attendance.
6、删除文本(d)
[root@nagios test]# sed -e '1,3d' quote.txt
The local nurse Misss P.Neave was in attendance.
说明：删除1-3行文本
sed -n '$!N;/pattern/!P;D' file
删除匹配行前一行
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增加
sed
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