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
    12 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
    12 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











share|improve this question




share|improve this question










asked 12 hours ago









rotarydialrotarydial

1066




1066








  • 1





    There is never a reason to run curl with sudo.

    – Kusalananda
    12 hours ago














  • 1





    There is never a reason to run curl with sudo.

    – Kusalananda
    12 hours ago








1




1





There is never a reason to run curl with sudo.

– Kusalananda
12 hours ago





There is never a reason to run curl with sudo.

– Kusalananda
12 hours ago










1 Answer
1






active

oldest

votes


















6














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























    Your Answer








    StackExchange.ready(function() {
    var channelOptions = {
    tags: "".split(" "),
    id: "106"
    };
    initTagRenderer("".split(" "), "".split(" "), channelOptions);

    StackExchange.using("externalEditor", function() {
    // Have to fire editor after snippets, if snippets enabled
    if (StackExchange.settings.snippets.snippetsEnabled) {
    StackExchange.using("snippets", function() {
    createEditor();
    });
    }
    else {
    createEditor();
    }
    });

    function createEditor() {
    StackExchange.prepareEditor({
    heartbeatType: 'answer',
    autoActivateHeartbeat: false,
    convertImagesToLinks: false,
    noModals: true,
    showLowRepImageUploadWarning: true,
    reputationToPostImages: null,
    bindNavPrevention: true,
    postfix: "",
    imageUploader: {
    brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
    contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
    allowUrls: true
    },
    onDemand: true,
    discardSelector: ".discard-answer"
    ,immediatelyShowMarkdownHelp:true
    });


    }
    });














    draft saved

    draft discarded


















    StackExchange.ready(
    function () {
    StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2funix.stackexchange.com%2fquestions%2f496020%2fare-these-commands-materially-or-only-semantically-different%23new-answer', 'question_page');
    }
    );

    Post as a guest















    Required, but never shown

























    1 Answer
    1






    active

    oldest

    votes








    1 Answer
    1






    active

    oldest

    votes









    active

    oldest

    votes






    active

    oldest

    votes









    6














    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




























      6














      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


























        6












        6








        6







        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 12 hours ago









        Stephen KittStephen Kitt

        168k24378456




        168k24378456






























            draft saved

            draft discarded




















































            Thanks for contributing an answer to Unix & Linux Stack Exchange!


            • Please be sure to answer the question. Provide details and share your research!

            But avoid …



            • Asking for help, clarification, or responding to other answers.

            • Making statements based on opinion; back them up with references or personal experience.


            To learn more, see our tips on writing great answers.




            draft saved


            draft discarded














            StackExchange.ready(
            function () {
            StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2funix.stackexchange.com%2fquestions%2f496020%2fare-these-commands-materially-or-only-semantically-different%23new-answer', 'question_page');
            }
            );

            Post as a guest















            Required, but never shown





















































            Required, but never shown














            Required, but never shown












            Required, but never shown







            Required, but never shown

































            Required, but never shown














            Required, but never shown












            Required, but never shown







            Required, but never shown







            -

            Popular posts from this blog

            How to make a Squid Proxy server?

            Image
            1 I want to set up squid proxy server for monitoring user activity in a network and Internet Web URL filtering for user. I also want to configure the user login, user log, user access group, and block unwanted web sites in my network. Please help me and guide me the full process to do this. server proxy squid share | improve this question edited Jul 31 '12 at 14:45 Jorge Castro 37.1k 107 422 617 asked Jul 31 '12 at 5:16 Goivind Tiwari Goivind Tiwari ...
            Read more

            Is this a new Fibonacci Identity?

            Image
            6 1 $begingroup$ I have found the following Fibonacci Identity (and proved it). If $F_n$ denotes the nth Fibonacci Number, we have the following identity begin{equation} F_{n-r+h}F_{n+k+g+1} - F_{n-r+g}F_{n+k+h+1} = (-1)^{n+r+h+1} F_{g-h}F_{k+r+1} end{equation} where $F_1 = F_2 = 1$ , $r leq n$ , $h leq g$ , and $n, g, k in mathbb{N}$ . It is not too hard to show that this identity subsumes Cassini's Identity, Catalan's Identity, Vajda's Idenity, and d'Ocagne's identity to name a few. I have done a pretty thorough literature review, and I have not found anything like this, but I am still wondering if anyone has seen this identity before? I found this by accident after noticing some patterns in some analysis work I was doing, so if this is already known I would be curious to see w...
            Read more

            19世紀

            Image
            この記事は検証可能な参考文献や出典が全く示されていないか、不十分です。 出典を追加して記事の信頼性向上にご協力ください。 （ 2012年3月 ） 千年紀: 2千年紀 世紀: 18世紀 - 19世紀 - 20世紀 十年紀: 1800年代 1810年代 1820年代 1830年代 1840年代 1850年代 1860年代 1870年代 1880年代 1890年代 19世紀に君臨した大英帝国。 19世紀 （じゅうきゅうせいき）は、西暦1801年から西暦1900年までの100年間を指す世紀。 目次 1 19世紀の歴史 1.1 国民国家の成立 1.2 帝国主義の興隆 1.3 列強の植民地争奪戦 2 できごと 2.1 1800年代 2.2 1810年代 2.3 1820年代 2.4 1830年代 2.5 1840年代 2.6 1850年代 2.7 1860年代 2.8 1870年代 2.9 1880年代 2.10 1890年代 2.11 1900年代 3 文化 3.1 文学 3.2 音楽 3.3 思想 3.4 科学 3.5 技術 4 人物 4.1 ヨーロッパ 4.1.1 政治家・王族 4.1.1.1 フランス 4.1.1.2 オーストリア＝ハンガリー 4.1.1.3 ロシア 4.1.1.4 イギリス 4.1.1.5 ドイツ（プロイセンほかドイツ領邦を含む） 4.1.1.6 北欧 4.1.1.7 イタリア 4.1.1.8 スペイン 4.1.1.9 ベルギー 4.1.1.10 ギリシア 4.1.2 軍人 4.1.3 実業家 4.1.4 科学と技術 4.1.5 思想と哲学・人文諸学 4.1.6 宗教 4.1.7 文学 4.1.8 美術 4.1.9 音楽 4.1.10 社会事業家 4.1.11 探検家・旅行家 4.1.12 料...
            Read more