Remove sudo from one command in a large Bash script





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I have a large bash script that is supposed to install all dependencies for an application and then build the application itself.



I run the script with sudo because most of the commands require it, e. g.:



apt update
apt install -y libunwind8
apt install -y curl
...


Then it gets to building the application:



npm install
npm run build


When the script gets to these two commands it fails, giving me the following error:



/home/crispjam/.npm/_cacache/tmp/git-clone-98eb9fb8/.git: Permission denied


I did some research on this and found out that when interacting with a git repository you shouldn't use sudo.



I tried running the npm install outside of the script and it did, indeed, work, suggesting that sudo makes that command fail inside the script.



I've considered adding sudo to all the commands inside instead of running the script with sudo but I've read here that for the most part it is not considered good practice.



In the top answer I read that you can drop the sudo privileges from a single command by prepending sudo -u username to it.



Is this good practice?



And how can I make this dynamic so that instead of using my username the script uses the name of the user running the script?










share|improve this question























  • Related: Ignore sudo in bash script - if the script is being run via sudo, then it should be able to access the invoking user's uersname as $SUDO_USER

    – steeldriver
    Mar 29 at 12:49


















0















I have a large bash script that is supposed to install all dependencies for an application and then build the application itself.



I run the script with sudo because most of the commands require it, e. g.:



apt update
apt install -y libunwind8
apt install -y curl
...


Then it gets to building the application:



npm install
npm run build


When the script gets to these two commands it fails, giving me the following error:



/home/crispjam/.npm/_cacache/tmp/git-clone-98eb9fb8/.git: Permission denied


I did some research on this and found out that when interacting with a git repository you shouldn't use sudo.



I tried running the npm install outside of the script and it did, indeed, work, suggesting that sudo makes that command fail inside the script.



I've considered adding sudo to all the commands inside instead of running the script with sudo but I've read here that for the most part it is not considered good practice.



In the top answer I read that you can drop the sudo privileges from a single command by prepending sudo -u username to it.



Is this good practice?



And how can I make this dynamic so that instead of using my username the script uses the name of the user running the script?










share|improve this question























  • Related: Ignore sudo in bash script - if the script is being run via sudo, then it should be able to access the invoking user's uersname as $SUDO_USER

    – steeldriver
    Mar 29 at 12:49














0












0








0








I have a large bash script that is supposed to install all dependencies for an application and then build the application itself.



I run the script with sudo because most of the commands require it, e. g.:



apt update
apt install -y libunwind8
apt install -y curl
...


Then it gets to building the application:



npm install
npm run build


When the script gets to these two commands it fails, giving me the following error:



/home/crispjam/.npm/_cacache/tmp/git-clone-98eb9fb8/.git: Permission denied


I did some research on this and found out that when interacting with a git repository you shouldn't use sudo.



I tried running the npm install outside of the script and it did, indeed, work, suggesting that sudo makes that command fail inside the script.



I've considered adding sudo to all the commands inside instead of running the script with sudo but I've read here that for the most part it is not considered good practice.



In the top answer I read that you can drop the sudo privileges from a single command by prepending sudo -u username to it.



Is this good practice?



And how can I make this dynamic so that instead of using my username the script uses the name of the user running the script?










share|improve this question














I have a large bash script that is supposed to install all dependencies for an application and then build the application itself.



I run the script with sudo because most of the commands require it, e. g.:



apt update
apt install -y libunwind8
apt install -y curl
...


Then it gets to building the application:



npm install
npm run build


When the script gets to these two commands it fails, giving me the following error:



/home/crispjam/.npm/_cacache/tmp/git-clone-98eb9fb8/.git: Permission denied


I did some research on this and found out that when interacting with a git repository you shouldn't use sudo.



I tried running the npm install outside of the script and it did, indeed, work, suggesting that sudo makes that command fail inside the script.



I've considered adding sudo to all the commands inside instead of running the script with sudo but I've read here that for the most part it is not considered good practice.



In the top answer I read that you can drop the sudo privileges from a single command by prepending sudo -u username to it.



Is this good practice?



And how can I make this dynamic so that instead of using my username the script uses the name of the user running the script?







bash sudo






share|improve this question













share|improve this question











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asked Mar 29 at 11:06









CrispJamCrispJam

53




53













  • Related: Ignore sudo in bash script - if the script is being run via sudo, then it should be able to access the invoking user's uersname as $SUDO_USER

    – steeldriver
    Mar 29 at 12:49



















  • Related: Ignore sudo in bash script - if the script is being run via sudo, then it should be able to access the invoking user's uersname as $SUDO_USER

    – steeldriver
    Mar 29 at 12:49

















Related: Ignore sudo in bash script - if the script is being run via sudo, then it should be able to access the invoking user's uersname as $SUDO_USER

– steeldriver
Mar 29 at 12:49





Related: Ignore sudo in bash script - if the script is being run via sudo, then it should be able to access the invoking user's uersname as $SUDO_USER

– steeldriver
Mar 29 at 12:49










2 Answers
2






active

oldest

votes


















0














Have you considered changing the folder permissions?



You can check it by right-clicking properties on the folder in your file explorer.






share|improve this answer































    0














    One of the answers here suggested using the command logname, which prints the user's login name.



    To use it inside the script I simply modify the lines



    npm install
    npm run build


    to:



    sudo -u $(logname) npm install
    sudo -u $(logname) npm run build





    share|improve this answer
























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      2 Answers
      2






      active

      oldest

      votes








      2 Answers
      2






      active

      oldest

      votes









      active

      oldest

      votes






      active

      oldest

      votes









      0














      Have you considered changing the folder permissions?



      You can check it by right-clicking properties on the folder in your file explorer.






      share|improve this answer




























        0














        Have you considered changing the folder permissions?



        You can check it by right-clicking properties on the folder in your file explorer.






        share|improve this answer


























          0












          0








          0







          Have you considered changing the folder permissions?



          You can check it by right-clicking properties on the folder in your file explorer.






          share|improve this answer













          Have you considered changing the folder permissions?



          You can check it by right-clicking properties on the folder in your file explorer.







          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered Mar 29 at 11:19









          PilouPilou

          42




          42

























              0














              One of the answers here suggested using the command logname, which prints the user's login name.



              To use it inside the script I simply modify the lines



              npm install
              npm run build


              to:



              sudo -u $(logname) npm install
              sudo -u $(logname) npm run build





              share|improve this answer




























                0














                One of the answers here suggested using the command logname, which prints the user's login name.



                To use it inside the script I simply modify the lines



                npm install
                npm run build


                to:



                sudo -u $(logname) npm install
                sudo -u $(logname) npm run build





                share|improve this answer


























                  0












                  0








                  0







                  One of the answers here suggested using the command logname, which prints the user's login name.



                  To use it inside the script I simply modify the lines



                  npm install
                  npm run build


                  to:



                  sudo -u $(logname) npm install
                  sudo -u $(logname) npm run build





                  share|improve this answer













                  One of the answers here suggested using the command logname, which prints the user's login name.



                  To use it inside the script I simply modify the lines



                  npm install
                  npm run build


                  to:



                  sudo -u $(logname) npm install
                  sudo -u $(logname) npm run build






                  share|improve this answer












                  share|improve this answer



                  share|improve this answer










                  answered Mar 29 at 12:28









                  CrispJamCrispJam

                  53




                  53






























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