标签：blue gray file2 整段 lines 用法 range sed

sed '/blue/,/gray/!b;//!d;/blue/r file2' file1
For the range of lines between blue and gray, delete lines that do not match either the first or the last lines in the range and read the lines to insert before the last line of the range.

EDIT:

The first sed command /blue/,/grey/!bmatches a range of lines i.e. the lines that range between a line containing blue upto and including a line containing gray. The !b part means if the lines are not in that range then break out of the sed commands i.e. do not do any further sed processing for these lines, just print as normal.

The sed commands following will only affect those lines that are in the range between blue and gray.


 
The second command //!d means: delete those lines that do not match either the start/end of the range i.e. blue or gray. The // uses the regexp from a previous /.../ command. N.B. a delete command terminates any further sed processing for that line.


 
The sed commands following will only affect lines that containing either blue or gray.

The third command matches a line containing blue and reads in lines from file2.

N.B. the lines containing blue and grey are processed by sed naturally and printed before the next line is read into the pattern space as are the lines not between blue and gray.

An alternative:

sed '/blue/,/gray/!b;//!d;/gray/e cat file2' file1

file2=2.txt
sed -i  "/green/,/gray/!b;//!d;/green/r $file2" 1.txt

file2=2.txt
sed -i  "/green/,/gray/!b;//!d;/gray/e cat $file2" 1.txt

1.txt 

2.txt 

参考文章：

https://www.it1352.com/1561585.html

标签：blue,gray,file2,整段,lines,用法,range,sed
来源： https://blog.csdn.net/dualvencsdn/article/details/114387752

本站声明： 1. iCode9 技术分享网（下文简称本站）提供的所有内容，仅供技术学习、探讨和分享；
2. 关于本站的所有留言、评论、转载及引用，纯属内容发起人的个人观点，与本站观点和立场无关；
3. 关于本站的所有言论和文字，纯属内容发起人的个人观点，与本站观点和立场无关；
4. 本站文章均是网友提供，不完全保证技术分享内容的完整性、准确性、时效性、风险性和版权归属；如您发现该文章侵犯了您的权益，可联系我们第一时间进行删除；
5. 本站为非盈利性的个人网站，所有内容不会用来进行牟利，也不会利用任何形式的广告来间接获益，纯粹是为了广大技术爱好者提供技术内容和技术思想的分享性交流网站。