Wrong string concatenation using Bash Windows Subsystem











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I'm having headaches to know why my script doesn't work as expected under windows subsystem linux.



My version from the store : Debian GNU/Linux 9.6 (stretch) (I tried ubuntu too, with the same results)



And my bash version : GNU bash, version 4.4.12(1)-release (x86_64-pc-linux-gnu)



This is my basic script only to show the issue :



PROJECT_ENV="development"
echo $PROJECT_ENV
compose_file="docker-compose.${PROJECT_ENV}.build.yml"
echo $compose_file


And it outputs :



.build.ymlpose.development


As i understand, that output doesn't make any sense to me, I tried to reinstall bash but i'm still having the same issue.










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    up vote
    1
    down vote

    favorite












    I'm having headaches to know why my script doesn't work as expected under windows subsystem linux.



    My version from the store : Debian GNU/Linux 9.6 (stretch) (I tried ubuntu too, with the same results)



    And my bash version : GNU bash, version 4.4.12(1)-release (x86_64-pc-linux-gnu)



    This is my basic script only to show the issue :



    PROJECT_ENV="development"
    echo $PROJECT_ENV
    compose_file="docker-compose.${PROJECT_ENV}.build.yml"
    echo $compose_file


    And it outputs :



    .build.ymlpose.development


    As i understand, that output doesn't make any sense to me, I tried to reinstall bash but i'm still having the same issue.










    share|improve this question







    New contributor




    waken22 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
    Check out our Code of Conduct.






















      up vote
      1
      down vote

      favorite









      up vote
      1
      down vote

      favorite











      I'm having headaches to know why my script doesn't work as expected under windows subsystem linux.



      My version from the store : Debian GNU/Linux 9.6 (stretch) (I tried ubuntu too, with the same results)



      And my bash version : GNU bash, version 4.4.12(1)-release (x86_64-pc-linux-gnu)



      This is my basic script only to show the issue :



      PROJECT_ENV="development"
      echo $PROJECT_ENV
      compose_file="docker-compose.${PROJECT_ENV}.build.yml"
      echo $compose_file


      And it outputs :



      .build.ymlpose.development


      As i understand, that output doesn't make any sense to me, I tried to reinstall bash but i'm still having the same issue.










      share|improve this question







      New contributor




      waken22 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.











      I'm having headaches to know why my script doesn't work as expected under windows subsystem linux.



      My version from the store : Debian GNU/Linux 9.6 (stretch) (I tried ubuntu too, with the same results)



      And my bash version : GNU bash, version 4.4.12(1)-release (x86_64-pc-linux-gnu)



      This is my basic script only to show the issue :



      PROJECT_ENV="development"
      echo $PROJECT_ENV
      compose_file="docker-compose.${PROJECT_ENV}.build.yml"
      echo $compose_file


      And it outputs :



      .build.ymlpose.development


      As i understand, that output doesn't make any sense to me, I tried to reinstall bash but i'm still having the same issue.







      linux bash windows-subsystem-for-linux string concatenation






      share|improve this question







      New contributor




      waken22 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







      New contributor




      waken22 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






      New contributor




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      asked 1 hour ago









      waken22

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      82




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      New contributor





      waken22 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.






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      Check out our Code of Conduct.






















          1 Answer
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          down vote



          accepted










          There is a carriage return character at the end of PROJECT_ENV variable content. This is probably because your script uses CR+LF line endings (proper in DOS/Windows) instead of sole LF (Unix/Linux).



          In Linux dos2unix is the right tool to fix it.



          The detailed explanation is as follows:





          1. The final echo prints



            docker-compose.development


          2. CR makes the terminal go back to the beginning of the line.



          3. The consecutive characters overwrite the previous text:



            .build.yml



          4. Therefore the result is:



            .build.ymlpose.development







          share|improve this answer























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            1 Answer
            1






            active

            oldest

            votes









            active

            oldest

            votes






            active

            oldest

            votes








            up vote
            2
            down vote



            accepted










            There is a carriage return character at the end of PROJECT_ENV variable content. This is probably because your script uses CR+LF line endings (proper in DOS/Windows) instead of sole LF (Unix/Linux).



            In Linux dos2unix is the right tool to fix it.



            The detailed explanation is as follows:





            1. The final echo prints



              docker-compose.development


            2. CR makes the terminal go back to the beginning of the line.



            3. The consecutive characters overwrite the previous text:



              .build.yml



            4. Therefore the result is:



              .build.ymlpose.development







            share|improve this answer



























              up vote
              2
              down vote



              accepted










              There is a carriage return character at the end of PROJECT_ENV variable content. This is probably because your script uses CR+LF line endings (proper in DOS/Windows) instead of sole LF (Unix/Linux).



              In Linux dos2unix is the right tool to fix it.



              The detailed explanation is as follows:





              1. The final echo prints



                docker-compose.development


              2. CR makes the terminal go back to the beginning of the line.



              3. The consecutive characters overwrite the previous text:



                .build.yml



              4. Therefore the result is:



                .build.ymlpose.development







              share|improve this answer

























                up vote
                2
                down vote



                accepted







                up vote
                2
                down vote



                accepted






                There is a carriage return character at the end of PROJECT_ENV variable content. This is probably because your script uses CR+LF line endings (proper in DOS/Windows) instead of sole LF (Unix/Linux).



                In Linux dos2unix is the right tool to fix it.



                The detailed explanation is as follows:





                1. The final echo prints



                  docker-compose.development


                2. CR makes the terminal go back to the beginning of the line.



                3. The consecutive characters overwrite the previous text:



                  .build.yml



                4. Therefore the result is:



                  .build.ymlpose.development







                share|improve this answer














                There is a carriage return character at the end of PROJECT_ENV variable content. This is probably because your script uses CR+LF line endings (proper in DOS/Windows) instead of sole LF (Unix/Linux).



                In Linux dos2unix is the right tool to fix it.



                The detailed explanation is as follows:





                1. The final echo prints



                  docker-compose.development


                2. CR makes the terminal go back to the beginning of the line.



                3. The consecutive characters overwrite the previous text:



                  .build.yml



                4. Therefore the result is:



                  .build.ymlpose.development








                share|improve this answer














                share|improve this answer



                share|improve this answer








                edited 1 hour ago

























                answered 1 hour ago









                Kamil Maciorowski

                23.4k155072




                23.4k155072






















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