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









New contributor




Abdellah Chadidi is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.




















  • @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









New contributor




Abdellah Chadidi is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.











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






share|improve this question









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Abdellah Chadidi is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.











share|improve this question









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Abdellah Chadidi is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.









share|improve this question




share|improve this question








edited Dec 29 '18 at 16:58





















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asked Dec 29 '18 at 14:30









Abdellah Chadidi

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New contributor




Abdellah Chadidi is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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New contributor





Abdellah Chadidi is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.






Abdellah Chadidi is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.












  • @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

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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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    active

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    active

    oldest

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    active

    oldest

    votes









    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














      #!/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









        PerlDuck

        5,39411231




        5,39411231






















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