Your version of tail may require a '-n' option, that is:
tail -n +3 file2
Regards,
- Robert
On Mon, Jan 4, 2021 at 12:18 PM alig...@gmail.com <aligam...@gmail.com>
wrote:
> Thanks for your help, but tail +3 appears an error as
>
> $ tail: cannot open '+3' for reading: No such file or directory
>
> On Monday, January 4, 2021 at 8:31:44 PM UTC+2 Robert Citek wrote:
>
>>
>> Input files:
>>
>> $ cat file1
>> da1
>> da2
>> da3
>>
>> $ cat file2
>> cx1
>> cx2
>> cx3
>> cx4
>>
>> Pick just the lines you want from each file:
>>
>> $ head -2 file2
>> cx1
>> cx2
>>
>> $ sed -n 2p file1
>> da2
>>
>> $ tail +3 file2
>> cx3
>> cx4
>>
>> Stitch the commands together with braces to achieve your output:
>>
>> $ {
>> head -2 file2
>> sed -n 2p file1
>> tail +3 file2
>>
>> }
>> cx1
>> cx2
>> da2
>> cx3
>> cx4
>>
>>
>> Regards,
>> - Robert
>>
>> On Mon, Jan 4, 2021 at 11:07 AM alig...@gmail.com <alig...@gmail.com>
>> wrote:
>>
>>> file 1 contains
>>>
>>> da1
>>> da2
>>> da3
>>>
>>> file 2 contains
>>>
>>> cx1
>>> cx2
>>> cx3
>>> cx4
>>>
>>> I want to copy da2 after cx2, I want output will be
>>>
>>> cx1
>>> cx2
>>> da2
>>> cx3
>>> cx4
>>>
>>>
>>> On Monday, January 4, 2021 at 8:03:40 PM UTC+2 Robert Citek wrote:
>>>
>>>> Hmm. That sounds similar, but not identical to your original post. Can
>>>> you clarify your question by giving an example, using a small dataset for
>>>> both input and expected output? - Robert
>>>>
>>>> On Mon, Jan 4, 2021 at 10:44 AM alig...@gmail.com <alig...@gmail.com>
>>>> wrote:
>>>>
>>>>> 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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