CODEWITHSUNDEEP
bashsed
ljuk
ljuk

Reputation: 784

How to copy specific lines from file 1 after specific line from file 2?

I have a file1 and a file2.

I want to copy lines 3,4,5 of file1 into file2, but after line 3.

I tried this, but it didn't work:

sed -i 3r<(sed '3,5!d' file1) file2

Any ideas? (I work with a macOS)

Example file1:

_line_1;
_line_2;
_line_3;
_line_4;
_line_5;

Example file2:

line1;
line2;
line3;
line4;

Example output

line1;
line2;
line3;
_line_3;
_line_4;
_line_5;
line4;

Upvotes: 0

Views: 1022

Answers (3)

ctac_
ctac_

Reputation: 2471

With only ed if it's allowed

printf "%s\n" "kx" "r file1" "'x+3,'x+5m3" "'x+1,\$d" "w" | ed -s file2

Here the k command mark the last line of file2.
You must protect the $ to the shell.

Upvotes: 0

potong
potong

Reputation: 58430

This might work for you (GNU sed):

sed -n '3,5p' file1 | sed '3r /dev/stdin' file2

Turn off implicit printing in the first sed invocation and pipe the results (lines 3-5) from file1 to a second sed invocation that reads in these lines after line 3 of file2.

Upvotes: 1

Shawn
Shawn

Reputation: 52384

Using a mix of ed and sed:

printf "%s\n" '3r !sed -n 3,5p file1' w | ed -s file2

Inserts the results of the sed command after line 3 of file2. Said sed prints out lines 3 through 5 of file1. Then it saves the changed file2.

Upvotes: 0

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