How to add subdir bin of first dir in GOPATH to PATH












1















echo $GOPATH will print:




/mnt/star/program/go/package:/mnt/star/git_repository/workspace/go_workplace




There are 2 dir, I want to append the first dir's sub dir bin/ to $PATH.



If I write $PATH=$PATH:$GOPATH/bin, then actually it append 2 dir to $PATH:





  • /mnt/star/program/go/package

    This only contains dirs, it should be /mnt/star/program/go/package/bin.


  • /mnt/star/git_repository/workspace/go_workplace/bin

    This actually shouldn't be added to $PATH.


BTW, there are cases that $GOPATH only contains one dir, in that case simply append $GOPATH/bin will work.



I am looking for a solution that fit for both cases. So, how to write this in bash config file?






linux bash shell







share|improve this question





























    1















    echo $GOPATH will print:




    /mnt/star/program/go/package:/mnt/star/git_repository/workspace/go_workplace




    There are 2 dir, I want to append the first dir's sub dir bin/ to $PATH.



    If I write $PATH=$PATH:$GOPATH/bin, then actually it append 2 dir to $PATH:





    • /mnt/star/program/go/package

      This only contains dirs, it should be /mnt/star/program/go/package/bin.


    • /mnt/star/git_repository/workspace/go_workplace/bin

      This actually shouldn't be added to $PATH.


    BTW, there are cases that $GOPATH only contains one dir, in that case simply append $GOPATH/bin will work.



    I am looking for a solution that fit for both cases. So, how to write this in bash config file?






    linux bash shell







    share|improve this question



























      1












      1








      1








      echo $GOPATH will print:




      /mnt/star/program/go/package:/mnt/star/git_repository/workspace/go_workplace




      There are 2 dir, I want to append the first dir's sub dir bin/ to $PATH.



      If I write $PATH=$PATH:$GOPATH/bin, then actually it append 2 dir to $PATH:





      • /mnt/star/program/go/package

        This only contains dirs, it should be /mnt/star/program/go/package/bin.


      • /mnt/star/git_repository/workspace/go_workplace/bin

        This actually shouldn't be added to $PATH.


      BTW, there are cases that $GOPATH only contains one dir, in that case simply append $GOPATH/bin will work.



      I am looking for a solution that fit for both cases. So, how to write this in bash config file?






      linux bash shell







      share|improve this question
















      echo $GOPATH will print:




      /mnt/star/program/go/package:/mnt/star/git_repository/workspace/go_workplace




      There are 2 dir, I want to append the first dir's sub dir bin/ to $PATH.



      If I write $PATH=$PATH:$GOPATH/bin, then actually it append 2 dir to $PATH:





      • /mnt/star/program/go/package

        This only contains dirs, it should be /mnt/star/program/go/package/bin.


      • /mnt/star/git_repository/workspace/go_workplace/bin

        This actually shouldn't be added to $PATH.


      BTW, there are cases that $GOPATH only contains one dir, in that case simply append $GOPATH/bin will work.



      I am looking for a solution that fit for both cases. So, how to write this in bash config file?






      linux bash shell




      linux bash shell






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited 1 hour ago







      Eric Wang

















      asked 3 hours ago









      Eric WangEric Wang

      19119




      19119






















          2 Answers
          2






          active

          oldest

          votes


















          3














          You can use:



          PATH="$PATH:${GOPATH%%:*}/bin"


          Or 



          PATH="$PATH:${GOPATH%:*}/bin"


          Both will work because, there could be max 1 :.



          It will remove the part after :. So in your first case it will remove second directory and in your second case, there will be no pattern like :*, so there will be no change in the directory name.






          share|improve this answer


























          • Yes, that's exactly it! Only improvement this could get is default to ~/go if not defined (which is default since Go 1.8 I believe) but this answers the asked question perfectly, thanks!

            – filbranden
            2 hours ago






          • 1





            Works like a charm.

            – Eric Wang
            1 hour ago



















          3














          PATH="$PATH:${GOPATH%%:*}/bin"


          The asterisk is a glob, not a regular expression. Two percentage signs means to remove the maximum that it can match from the back, so even if there were three or more directories, you would only get the first one.



          If there's nothing to remove, it doesn't remove anything, so you get the only path if there's only one.






          share|improve this answer


























          • It's the opposite... It's supposed to keep the first part, so you need to remove the last part. This is definitely the best answer, so if you fix it to PATH=$PATH:${GOPATH%%:*}/bin I'll definitely upvote it!

            – filbranden
            2 hours ago











          • I read the question backwards. You're right, @filbranden. I'll fix it.

            – Ken Jackson
            2 hours ago











          Your Answer








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          2 Answers
          2






          active

          oldest

          votes








          2 Answers
          2






          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes









          3














          You can use:



          PATH="$PATH:${GOPATH%%:*}/bin"


          Or 



          PATH="$PATH:${GOPATH%:*}/bin"


          Both will work because, there could be max 1 :.



          It will remove the part after :. So in your first case it will remove second directory and in your second case, there will be no pattern like :*, so there will be no change in the directory name.






          share|improve this answer


























          • Yes, that's exactly it! Only improvement this could get is default to ~/go if not defined (which is default since Go 1.8 I believe) but this answers the asked question perfectly, thanks!

            – filbranden
            2 hours ago






          • 1





            Works like a charm.

            – Eric Wang
            1 hour ago
















          3














          You can use:



          PATH="$PATH:${GOPATH%%:*}/bin"


          Or 



          PATH="$PATH:${GOPATH%:*}/bin"


          Both will work because, there could be max 1 :.



          It will remove the part after :. So in your first case it will remove second directory and in your second case, there will be no pattern like :*, so there will be no change in the directory name.






          share|improve this answer


























          • Yes, that's exactly it! Only improvement this could get is default to ~/go if not defined (which is default since Go 1.8 I believe) but this answers the asked question perfectly, thanks!

            – filbranden
            2 hours ago






          • 1





            Works like a charm.

            – Eric Wang
            1 hour ago














          3












          3








          3







          You can use:



          PATH="$PATH:${GOPATH%%:*}/bin"


          Or 



          PATH="$PATH:${GOPATH%:*}/bin"


          Both will work because, there could be max 1 :.



          It will remove the part after :. So in your first case it will remove second directory and in your second case, there will be no pattern like :*, so there will be no change in the directory name.






          share|improve this answer















          You can use:



          PATH="$PATH:${GOPATH%%:*}/bin"


          Or 



          PATH="$PATH:${GOPATH%:*}/bin"


          Both will work because, there could be max 1 :.



          It will remove the part after :. So in your first case it will remove second directory and in your second case, there will be no pattern like :*, so there will be no change in the directory name.







          share|improve this answer














          share|improve this answer



          share|improve this answer








          edited 2 hours ago

























          answered 2 hours ago









          PRYPRY

          2,15031025




          2,15031025













          • Yes, that's exactly it! Only improvement this could get is default to ~/go if not defined (which is default since Go 1.8 I believe) but this answers the asked question perfectly, thanks!

            – filbranden
            2 hours ago






          • 1





            Works like a charm.

            – Eric Wang
            1 hour ago



















          • Yes, that's exactly it! Only improvement this could get is default to ~/go if not defined (which is default since Go 1.8 I believe) but this answers the asked question perfectly, thanks!

            – filbranden
            2 hours ago






          • 1





            Works like a charm.

            – Eric Wang
            1 hour ago

















          Yes, that's exactly it! Only improvement this could get is default to ~/go if not defined (which is default since Go 1.8 I believe) but this answers the asked question perfectly, thanks!

          – filbranden
          2 hours ago





          Yes, that's exactly it! Only improvement this could get is default to ~/go if not defined (which is default since Go 1.8 I believe) but this answers the asked question perfectly, thanks!

          – filbranden
          2 hours ago




          1




          1





          Works like a charm.

          – Eric Wang
          1 hour ago





          Works like a charm.

          – Eric Wang
          1 hour ago













          3














          PATH="$PATH:${GOPATH%%:*}/bin"


          The asterisk is a glob, not a regular expression. Two percentage signs means to remove the maximum that it can match from the back, so even if there were three or more directories, you would only get the first one.



          If there's nothing to remove, it doesn't remove anything, so you get the only path if there's only one.






          share|improve this answer


























          • It's the opposite... It's supposed to keep the first part, so you need to remove the last part. This is definitely the best answer, so if you fix it to PATH=$PATH:${GOPATH%%:*}/bin I'll definitely upvote it!

            – filbranden
            2 hours ago











          • I read the question backwards. You're right, @filbranden. I'll fix it.

            – Ken Jackson
            2 hours ago
















          3














          PATH="$PATH:${GOPATH%%:*}/bin"


          The asterisk is a glob, not a regular expression. Two percentage signs means to remove the maximum that it can match from the back, so even if there were three or more directories, you would only get the first one.



          If there's nothing to remove, it doesn't remove anything, so you get the only path if there's only one.






          share|improve this answer


























          • It's the opposite... It's supposed to keep the first part, so you need to remove the last part. This is definitely the best answer, so if you fix it to PATH=$PATH:${GOPATH%%:*}/bin I'll definitely upvote it!

            – filbranden
            2 hours ago











          • I read the question backwards. You're right, @filbranden. I'll fix it.

            – Ken Jackson
            2 hours ago














          3












          3








          3







          PATH="$PATH:${GOPATH%%:*}/bin"


          The asterisk is a glob, not a regular expression. Two percentage signs means to remove the maximum that it can match from the back, so even if there were three or more directories, you would only get the first one.



          If there's nothing to remove, it doesn't remove anything, so you get the only path if there's only one.






          share|improve this answer















          PATH="$PATH:${GOPATH%%:*}/bin"


          The asterisk is a glob, not a regular expression. Two percentage signs means to remove the maximum that it can match from the back, so even if there were three or more directories, you would only get the first one.



          If there's nothing to remove, it doesn't remove anything, so you get the only path if there's only one.







          share|improve this answer














          share|improve this answer



          share|improve this answer








          edited 2 hours ago

























          answered 2 hours ago









          Ken JacksonKen Jackson

          1063




          1063













          • It's the opposite... It's supposed to keep the first part, so you need to remove the last part. This is definitely the best answer, so if you fix it to PATH=$PATH:${GOPATH%%:*}/bin I'll definitely upvote it!

            – filbranden
            2 hours ago











          • I read the question backwards. You're right, @filbranden. I'll fix it.

            – Ken Jackson
            2 hours ago



















          • It's the opposite... It's supposed to keep the first part, so you need to remove the last part. This is definitely the best answer, so if you fix it to PATH=$PATH:${GOPATH%%:*}/bin I'll definitely upvote it!

            – filbranden
            2 hours ago











          • I read the question backwards. You're right, @filbranden. I'll fix it.

            – Ken Jackson
            2 hours ago

















          It's the opposite... It's supposed to keep the first part, so you need to remove the last part. This is definitely the best answer, so if you fix it to PATH=$PATH:${GOPATH%%:*}/bin I'll definitely upvote it!

          – filbranden
          2 hours ago





          It's the opposite... It's supposed to keep the first part, so you need to remove the last part. This is definitely the best answer, so if you fix it to PATH=$PATH:${GOPATH%%:*}/bin I'll definitely upvote it!

          – filbranden
          2 hours ago













          I read the question backwards. You're right, @filbranden. I'll fix it.

          – Ken Jackson
          2 hours ago





          I read the question backwards. You're right, @filbranden. I'll fix it.

          – Ken Jackson
          2 hours ago


















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