How to move N lines from one file to another












1















I want to download multiple files, so I decided to create 4 text files that are handled with a script.



toDownload.txt | this file will hold a list of links to download.
inQueue.txt | the files currently downloading will move here and if failed we can continue later using wget -c flag.
downloaded.txt | this file will hold file links that have finished downloading.
failed.txt | this file will hold links that failed to start downloading for example if the URL returns 404.


how can I move the first x number of links from a file and move it to another file?










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  • @PerlDuck thanks for your suggestion, I have updated the title.

    – Abdellah Chadidi
    Dec 29 '18 at 16:59
















1















I want to download multiple files, so I decided to create 4 text files that are handled with a script.



toDownload.txt | this file will hold a list of links to download.
inQueue.txt | the files currently downloading will move here and if failed we can continue later using wget -c flag.
downloaded.txt | this file will hold file links that have finished downloading.
failed.txt | this file will hold links that failed to start downloading for example if the URL returns 404.


how can I move the first x number of links from a file and move it to another file?










share|improve this question

























  • @PerlDuck thanks for your suggestion, I have updated the title.

    – Abdellah Chadidi
    Dec 29 '18 at 16:59














1












1








1








I want to download multiple files, so I decided to create 4 text files that are handled with a script.



toDownload.txt | this file will hold a list of links to download.
inQueue.txt | the files currently downloading will move here and if failed we can continue later using wget -c flag.
downloaded.txt | this file will hold file links that have finished downloading.
failed.txt | this file will hold links that failed to start downloading for example if the URL returns 404.


how can I move the first x number of links from a file and move it to another file?










share|improve this question
















I want to download multiple files, so I decided to create 4 text files that are handled with a script.



toDownload.txt | this file will hold a list of links to download.
inQueue.txt | the files currently downloading will move here and if failed we can continue later using wget -c flag.
downloaded.txt | this file will hold file links that have finished downloading.
failed.txt | this file will hold links that failed to start downloading for example if the URL returns 404.


how can I move the first x number of links from a file and move it to another file?







16.04 server cron wget






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share|improve this question








edited Dec 29 '18 at 16:58







Abdellah Chadidi

















asked Dec 29 '18 at 14:30









Abdellah ChadidiAbdellah Chadidi

83




83













  • @PerlDuck thanks for your suggestion, I have updated the title.

    – Abdellah Chadidi
    Dec 29 '18 at 16:59



















  • @PerlDuck thanks for your suggestion, I have updated the title.

    – Abdellah Chadidi
    Dec 29 '18 at 16:59

















@PerlDuck thanks for your suggestion, I have updated the title.

– Abdellah Chadidi
Dec 29 '18 at 16:59





@PerlDuck thanks for your suggestion, I have updated the title.

– Abdellah Chadidi
Dec 29 '18 at 16:59










1 Answer
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oldest

votes


















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#!/bin/sh

lines=3
head -n $lines file1.txt >> file2.txt
sed -i -e "1,$lines d" file1.txt


This will append the first three lines from file1.txt to file2.txt
and then delete the lines 1…3 from file1.txt effectively
moving the first 3 lines from file1.txt to the end of file2.txt.






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    1 Answer
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    #!/bin/sh

    lines=3
    head -n $lines file1.txt >> file2.txt
    sed -i -e "1,$lines d" file1.txt


    This will append the first three lines from file1.txt to file2.txt
    and then delete the lines 1…3 from file1.txt effectively
    moving the first 3 lines from file1.txt to the end of file2.txt.






    share|improve this answer




























      1














      #!/bin/sh

      lines=3
      head -n $lines file1.txt >> file2.txt
      sed -i -e "1,$lines d" file1.txt


      This will append the first three lines from file1.txt to file2.txt
      and then delete the lines 1…3 from file1.txt effectively
      moving the first 3 lines from file1.txt to the end of file2.txt.






      share|improve this answer


























        1












        1








        1







        #!/bin/sh

        lines=3
        head -n $lines file1.txt >> file2.txt
        sed -i -e "1,$lines d" file1.txt


        This will append the first three lines from file1.txt to file2.txt
        and then delete the lines 1…3 from file1.txt effectively
        moving the first 3 lines from file1.txt to the end of file2.txt.






        share|improve this answer













        #!/bin/sh

        lines=3
        head -n $lines file1.txt >> file2.txt
        sed -i -e "1,$lines d" file1.txt


        This will append the first three lines from file1.txt to file2.txt
        and then delete the lines 1…3 from file1.txt effectively
        moving the first 3 lines from file1.txt to the end of file2.txt.







        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered Dec 29 '18 at 14:55









        PerlDuckPerlDuck

        5,90711333




        5,90711333






























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