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Shell Programming and Scripting

Replace values between 2 files

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Top Forums Shell Programming and Scripting Replace values between 2 files
# 1  
Old 07-26-2014
Scissors Replace values between 2 files
I want to replace the third and fourth lines of a 2nd file by the first two lines of a file.

Input:
Code:
file_1 
file_1.line_1 
file_1.line_2

file_2
Code:
file_2.line_1
<file_2.line_2_blank>
file_2.line_3 
file2.line_4
<file_2.line_5_blank>

Output:
Code:
file_2.line1
<file_2.line_2_blank>
file_1.line_1
file_1.line_2
<file_2.line_5_blank>

What I have done is really to long:
Code:
1. 'grep file2.line1' > temp
2.echo  file_1.line_1 >> temp
 3.echo file_1.line_2 >> temp
4.echo the rest of file2 >> temp 
5.mv temp file_2

I hope to be clear enough
tankx guys


I hope to be clear enough

tankx guys

Moderator's Comments:
Mod Comment Please use code tags
Last edited by jim mcnamara; 07-26-2014 at 11:48 AM..
# 2  
Old 07-26-2014
Try (untested):
Code:
awk 'NR==3|| NR==4{getline < "file1"} 1'  file2

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