如何根据 Linux 中文件内的字符串可用性填充记录

Question

i am not expert in Linux commands, seeking all your help for my requirement.

i have file that has huge number of records, that we can be differentiated by three sections that is header record, Content and footer records.

File Sample Content:-

HDR1
HDR2
HDR3
LIN+1
bla blaa1 
Bla blaa2
......
.....
..
LIN+2
bla blaa1 
Bla blaa2
......
.....
..
Footer1
Footer2
Footer3

From the above sample records from a file, I want to populate the Lines from "LIN+2" to before "Footer1" line to another new file and delete the lines from the old file.

Please help with the command, your help will be much appreciated.

Answer 1

I won't give you the entire solution, but using these tips you can find out:

• In order to find an entry in a file, you can use grep (like grep "LIN+2" filename) .
• Once you have this, you can add -n to the result in order to know the line number of the result (like grep -n "LIN+2" filename ).
• Using awk , you can make sure only to get that information (like grep "LIN+2" filename | awk -F: '{print $1}' ).
• In order to see the first 10 lines of a file, do head -n 10 filename .
• In order to see the last 10 lines of a file, do tail -n 10 filename .

Using that information, you should be able to get your result.