Hi Robert,
I want to copy line 5 from a file to line 3 in another file
Thanks in advance
On Monday, January 4, 2021 at 5:51:31 PM UTC+2 Robert Citek wrote:
> Without example data, it's not completely clear what you are trying to
> do. But this might be one of many ways to accomplish what you are trying
> to do:
>
> $ { head -4 test.dat ; sed -n 3p w.dat ; tail -n +5 test.dat ; } | cat -n
> 1 b1
> 2 b2
> 3 b3
> 4 b4
> 5 a3
> 6 b5
> 7 b6
> 8 b7
> 9 b8
> 10 b9
> 11 b10
>
> Sample data:
>
> $ paste w.dat test.dat | cat -n
> 1 a1 b1
> 2 a2 b2
> 3 a3 b3
> 4 a4 b4
> 5 a5 b5
> 6 a6 b6
> 7 a7 b7
> 8 a8 b8
> 9 a9 b9
> 10 a10 b10
>
> Regards,
> - Robert
>
> On Mon, Jan 4, 2021 at 8:02 AM alig...@gmail.com <alig...@gmail.com>
> wrote:
>
>> Hi,
>> I want to copy a line from a file to a specific line number in a file.
>>
>> I copy line 3 from w.dat file to test.dat file using
>>
>> sed -n 3P w.dat >> test.dat
>>
>> but it copy line 3 to the end of test.dat file, I want copy line 3 to
>> line number 5 in the test.dat file, how can I do that?
>>
>>
>>
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