setgid bit in umask of systemd service script

Multi tool use
Multi tool use

The name of the pictureThe name of the pictureThe name of the pictureClash Royale CLAN TAG#URR8PPP











up vote
1
down vote

favorite












I have a downloader service running, and I'd like it to set the setgid bit of every directory it creates. Its already doing so, but I suspect that's because at the moment, the parent directory also has setgid. What do I set the umask to?



I'm also wondering how umask, particularly in a systemd script, works for the "4th" digit. I understand that its inverted, so that umask = 002 is like chmod 775. But what about umask = 2002. Is that chmod 5775? or chmod 2775?



Thanks!




linux ubuntu files filesystems




share|improve this question




















  • It should be 2775!
    – George Udosen
    Jan 22 at 1:33














up vote
1
down vote

favorite












I have a downloader service running, and I'd like it to set the setgid bit of every directory it creates. Its already doing so, but I suspect that's because at the moment, the parent directory also has setgid. What do I set the umask to?



I'm also wondering how umask, particularly in a systemd script, works for the "4th" digit. I understand that its inverted, so that umask = 002 is like chmod 775. But what about umask = 2002. Is that chmod 5775? or chmod 2775?



Thanks!




linux ubuntu files filesystems




share|improve this question




















  • It should be 2775!
    – George Udosen
    Jan 22 at 1:33












up vote
1
down vote

favorite









up vote
1
down vote

favorite











I have a downloader service running, and I'd like it to set the setgid bit of every directory it creates. Its already doing so, but I suspect that's because at the moment, the parent directory also has setgid. What do I set the umask to?



I'm also wondering how umask, particularly in a systemd script, works for the "4th" digit. I understand that its inverted, so that umask = 002 is like chmod 775. But what about umask = 2002. Is that chmod 5775? or chmod 2775?



Thanks!




linux ubuntu files filesystems




share|improve this question












I have a downloader service running, and I'd like it to set the setgid bit of every directory it creates. Its already doing so, but I suspect that's because at the moment, the parent directory also has setgid. What do I set the umask to?



I'm also wondering how umask, particularly in a systemd script, works for the "4th" digit. I understand that its inverted, so that umask = 002 is like chmod 775. But what about umask = 2002. Is that chmod 5775? or chmod 2775?



Thanks!





linux ubuntu files filesystems





share|improve this question











share|improve this question




share|improve this question










asked Jan 21 at 21:25









Kayson

82




82











  • It should be 2775!
    – George Udosen
    Jan 22 at 1:33
















  • It should be 2775!
    – George Udosen
    Jan 22 at 1:33















It should be 2775!
– George Udosen
Jan 22 at 1:33




It should be 2775!
– George Udosen
Jan 22 at 1:33










1 Answer
1






active

oldest

votes

















up vote
0
down vote



accepted










I believe the octal numbers for:



  • sticky bit is 1,

  • setgid on directories: 2, and

  • setuid on files: 4.

So for the case your asking it would be: umask 2002 ==> 2775 for folders.






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',
    convertImagesToLinks: false,
    noModals: false,
    showLowRepImageUploadWarning: true,
    reputationToPostImages: null,
    bindNavPrevention: true,
    postfix: "",
    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%2f418694%2fsetgid-bit-in-umask-of-systemd-service-script%23new-answer', 'question_page');

    );

    Post as a guest

















    1 Answer
    1






    active

    oldest

    votes








    1 Answer
    1






    active

    oldest

    votes









    active

    oldest

    votes






    active

    oldest

    votes








    up vote
    0
    down vote



    accepted










    I believe the octal numbers for:



    • sticky bit is 1,

    • setgid on directories: 2, and

    • setuid on files: 4.

    So for the case your asking it would be: umask 2002 ==> 2775 for folders.






    share|improve this answer
























      up vote
      0
      down vote



      accepted










      I believe the octal numbers for:



      • sticky bit is 1,

      • setgid on directories: 2, and

      • setuid on files: 4.

      So for the case your asking it would be: umask 2002 ==> 2775 for folders.






      share|improve this answer






















        up vote
        0
        down vote



        accepted







        up vote
        0
        down vote



        accepted






        I believe the octal numbers for:



        • sticky bit is 1,

        • setgid on directories: 2, and

        • setuid on files: 4.

        So for the case your asking it would be: umask 2002 ==> 2775 for folders.






        share|improve this answer












        I believe the octal numbers for:



        • sticky bit is 1,

        • setgid on directories: 2, and

        • setuid on files: 4.

        So for the case your asking it would be: umask 2002 ==> 2775 for folders.







        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered Jan 22 at 1:38









        George Udosen

        1,112318




        1,112318






















             

            draft saved


            draft discarded


























             


            draft saved


            draft discarded














            StackExchange.ready(
            function ()
            StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2funix.stackexchange.com%2fquestions%2f418694%2fsetgid-bit-in-umask-of-systemd-service-script%23new-answer', 'question_page');

            );

            Post as a guest
































































            QyS,RW U9w7L04eQfWeub0Z249DPaX9Jj6BBE6 O1IE1 YP6y,R WcmO
            -
            L4aT fZ4

            Popular posts from this blog

            How to check contact read email or not when send email to Individual?

            Image
            Clash Royale CLAN TAG #URR8PPP up vote 1 down vote favorite I'm using WordPress 4.9.8, CiviCRM to 5.5.1, I usually send email to contact by Search> Find contacts View contact details Action> Send email Send email ok, Contact received mail ok like picture But status only Email sent though contact read email or not. So, can CiviCRM can change status to Email read when contact read email? wordpress email share | improve this question asked Sep 26 at 0:12 ToanLuong 49 9 add a comment  |  up vote 1 down vote favorite I'm using WordPress 4.9.8, CiviCRM to 5.5.1, I usually send email to contact by Search> Find contacts View contact details Action> Send email Send email ok, Contact received mail ok like picture But status only Email sent though contact read email or not. So, can CiviCRM can change status to Email read when contact read email? wordpress email share | improve this questi...
            Read more

            How many registers does an x86_64 CPU actually have?

            Image
            Clash Royale CLAN TAG #URR8PPP up vote 2 down vote favorite I am currently learning reverse engineering and am studying the flags register. I had in my mind that rflags was just another name for one of the 16 general purpose registers, for example rax or rbx . But it looks like rflags is actually an additional register. So that makes 17 registers in total... how many more could there be? I have spent at least an hour on this and found numerous different answers. The best answer so far is this, which says that there are 40 registers in total. 16 General Purpose Registers 2 Status Registers 6 Code Segment Registers 16 SSE Registers 8 FPU/MMX Registers But if I add that up, I get 48. Could anybody provide an official answer on how many registers an x86_64 CPU has (e.g. an Intel i7). Additionally, I have seen references to 'hardware' and 'architectural' registers. What are those registers and how many are there? register x86-64 share | improve this...
            Read more

            Displaying single band from multi-band raster using QGIS

            Image
            Clash Royale CLAN TAG #URR8PPP 1 How can I extract a single band from multi-band raster in QGIS? I have an remote sensed image which has 6 bands (including NDVI band), I want to display each band separately, but have no idea how to do. I have seen some questions similar here but none worked for me. The original image (has 6 bands) is: I want to display the band 6 which should be like this: But I tried gdal_translate, and couldn't get the correct result. What I have got is: qgis raster multi-band share | improve this question edited Mar 5 at 0:53 Summer asked Mar 4 at 6:42 Summer Summer 23 6 Is this any help gis.stackexchange.com/questions/220658/… ? if not gis.stackexchange.com/questions/62133/… might help. – Michael Stimson Mar 4 at 6:46 Thanks for answering but when I used gdal_translate, qgis showed that 'Error 4: Kayena.tif: No such file or directory". Would you know how to fi...
            Read more