Are these commands materially, or only semantically different?












1















In a shell script that's using curl to fetch a script, then executing it, are these two approaches materially different?



curl http://address-to-some-script/dosomething.sh | sudo tee /usr/bin/dosomething.sh


...vs...



sudo curl http://address-to-some-script/dosomething.sh >> /usr/bin/dosomething.sh


There's something about the sudo right before curl in the second command that's giving me pause, but I can't articulate whether or how it's different (riskier?) than the first.






shell-script curl







share|improve this question


















  • 1





    There is never a reason to run curl with sudo.

    – Kusalananda
    4 hours ago
















1















In a shell script that's using curl to fetch a script, then executing it, are these two approaches materially different?



curl http://address-to-some-script/dosomething.sh | sudo tee /usr/bin/dosomething.sh


...vs...



sudo curl http://address-to-some-script/dosomething.sh >> /usr/bin/dosomething.sh


There's something about the sudo right before curl in the second command that's giving me pause, but I can't articulate whether or how it's different (riskier?) than the first.






shell-script curl







share|improve this question


















  • 1





    There is never a reason to run curl with sudo.

    – Kusalananda
    4 hours ago














1












1








1








In a shell script that's using curl to fetch a script, then executing it, are these two approaches materially different?



curl http://address-to-some-script/dosomething.sh | sudo tee /usr/bin/dosomething.sh


...vs...



sudo curl http://address-to-some-script/dosomething.sh >> /usr/bin/dosomething.sh


There's something about the sudo right before curl in the second command that's giving me pause, but I can't articulate whether or how it's different (riskier?) than the first.






shell-script curl







share|improve this question














In a shell script that's using curl to fetch a script, then executing it, are these two approaches materially different?



curl http://address-to-some-script/dosomething.sh | sudo tee /usr/bin/dosomething.sh


...vs...



sudo curl http://address-to-some-script/dosomething.sh >> /usr/bin/dosomething.sh


There's something about the sudo right before curl in the second command that's giving me pause, but I can't articulate whether or how it's different (riskier?) than the first.






shell-script curl




shell-script curl






share|improve this question













share|improve this question











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asked 4 hours ago









rotarydialrotarydial

1066




1066








  • 1





    There is never a reason to run curl with sudo.

    – Kusalananda
    4 hours ago














  • 1





    There is never a reason to run curl with sudo.

    – Kusalananda
    4 hours ago








1




1





There is never a reason to run curl with sudo.

– Kusalananda
4 hours ago





There is never a reason to run curl with sudo.

– Kusalananda
4 hours ago










1 Answer
1






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There are a number of material differences.



curl http://address-to-some-script/dosomething.sh | sudo tee /usr/bin/dosomething.sh


runs curl as the current user, and tee as root; it also clears the contents of /usr/bin/dosomething.sh before writing to it.



sudo curl http://address-to-some-script/dosomething.sh >> /usr/bin/dosomething.sh


runs curl as root, and tries to append to /usr/bin/dosomething.sh with the permissions of the current user (the current shell sets the redirection up).






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    There are a number of material differences.



    curl http://address-to-some-script/dosomething.sh | sudo tee /usr/bin/dosomething.sh


    runs curl as the current user, and tee as root; it also clears the contents of /usr/bin/dosomething.sh before writing to it.



    sudo curl http://address-to-some-script/dosomething.sh >> /usr/bin/dosomething.sh


    runs curl as root, and tries to append to /usr/bin/dosomething.sh with the permissions of the current user (the current shell sets the redirection up).






    share|improve this answer




























      5














      There are a number of material differences.



      curl http://address-to-some-script/dosomething.sh | sudo tee /usr/bin/dosomething.sh


      runs curl as the current user, and tee as root; it also clears the contents of /usr/bin/dosomething.sh before writing to it.



      sudo curl http://address-to-some-script/dosomething.sh >> /usr/bin/dosomething.sh


      runs curl as root, and tries to append to /usr/bin/dosomething.sh with the permissions of the current user (the current shell sets the redirection up).






      share|improve this answer


























        5












        5








        5







        There are a number of material differences.



        curl http://address-to-some-script/dosomething.sh | sudo tee /usr/bin/dosomething.sh


        runs curl as the current user, and tee as root; it also clears the contents of /usr/bin/dosomething.sh before writing to it.



        sudo curl http://address-to-some-script/dosomething.sh >> /usr/bin/dosomething.sh


        runs curl as root, and tries to append to /usr/bin/dosomething.sh with the permissions of the current user (the current shell sets the redirection up).






        share|improve this answer













        There are a number of material differences.



        curl http://address-to-some-script/dosomething.sh | sudo tee /usr/bin/dosomething.sh


        runs curl as the current user, and tee as root; it also clears the contents of /usr/bin/dosomething.sh before writing to it.



        sudo curl http://address-to-some-script/dosomething.sh >> /usr/bin/dosomething.sh


        runs curl as root, and tries to append to /usr/bin/dosomething.sh with the permissions of the current user (the current shell sets the redirection up).







        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered 4 hours ago









        Stephen KittStephen Kitt

        168k24378456




        168k24378456






























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