When are files from /tmp deleted?

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











up vote
3
down vote

favorite
1












I'd like to investigate when files in /tmp get removed. I run CentOS 7. Policy regarding deleting files from that directory is governed as follows:




RHEL7 and RedHat-like with systemd it's configured in
/usr/lib/tmpfiles.d/tmp.conf, called by systemd-tmpfiles-clean.service)




I guess that three-year-old files are old enough to be deleted. So I set access time this way



find /tmp/payaramicro*tmp -exec touch -m -a -t 201512180130.09 ;


However, when I run systemd-tmpfiles --clean those files won't get deleted. Why? Perhaps it has something to do with their dates as stat some-file shows today's date in one of its lines in output:




Access: 2015-12-18 01:30:09.000000000 +0100
Modify: 2015-12-18 01:30:09.000000000 +0100
Change: 2018-04-18 12:20:54.095962410 +0200





linux rhel tmp




share|improve this question

























    up vote
    3
    down vote

    favorite
    1












    I'd like to investigate when files in /tmp get removed. I run CentOS 7. Policy regarding deleting files from that directory is governed as follows:




    RHEL7 and RedHat-like with systemd it's configured in
    /usr/lib/tmpfiles.d/tmp.conf, called by systemd-tmpfiles-clean.service)




    I guess that three-year-old files are old enough to be deleted. So I set access time this way



    find /tmp/payaramicro*tmp -exec touch -m -a -t 201512180130.09 ;


    However, when I run systemd-tmpfiles --clean those files won't get deleted. Why? Perhaps it has something to do with their dates as stat some-file shows today's date in one of its lines in output:




    Access: 2015-12-18 01:30:09.000000000 +0100
    Modify: 2015-12-18 01:30:09.000000000 +0100
    Change: 2018-04-18 12:20:54.095962410 +0200





    linux rhel tmp




    share|improve this question























      up vote
      3
      down vote

      favorite
      1









      up vote
      3
      down vote

      favorite
      1






      1





      I'd like to investigate when files in /tmp get removed. I run CentOS 7. Policy regarding deleting files from that directory is governed as follows:




      RHEL7 and RedHat-like with systemd it's configured in
      /usr/lib/tmpfiles.d/tmp.conf, called by systemd-tmpfiles-clean.service)




      I guess that three-year-old files are old enough to be deleted. So I set access time this way



      find /tmp/payaramicro*tmp -exec touch -m -a -t 201512180130.09 ;


      However, when I run systemd-tmpfiles --clean those files won't get deleted. Why? Perhaps it has something to do with their dates as stat some-file shows today's date in one of its lines in output:




      Access: 2015-12-18 01:30:09.000000000 +0100
      Modify: 2015-12-18 01:30:09.000000000 +0100
      Change: 2018-04-18 12:20:54.095962410 +0200





      linux rhel tmp




      share|improve this question













      I'd like to investigate when files in /tmp get removed. I run CentOS 7. Policy regarding deleting files from that directory is governed as follows:




      RHEL7 and RedHat-like with systemd it's configured in
      /usr/lib/tmpfiles.d/tmp.conf, called by systemd-tmpfiles-clean.service)




      I guess that three-year-old files are old enough to be deleted. So I set access time this way



      find /tmp/payaramicro*tmp -exec touch -m -a -t 201512180130.09 ;


      However, when I run systemd-tmpfiles --clean those files won't get deleted. Why? Perhaps it has something to do with their dates as stat some-file shows today's date in one of its lines in output:




      Access: 2015-12-18 01:30:09.000000000 +0100
      Modify: 2015-12-18 01:30:09.000000000 +0100
      Change: 2018-04-18 12:20:54.095962410 +0200






      linux rhel tmp





      share|improve this question












      share|improve this question




      share|improve this question








      edited Apr 18 at 10:30
























      asked Apr 18 at 10:23









      menteith

      1457




      1457




















          1 Answer
          1






          active

          oldest

          votes

















          up vote
          5
          down vote



          accepted










          Yes, systemd-tmpfiles --clean considers change times too. You can see this by running it with debug logs enabled:



          SYSTEMD_LOG_LEVEL=debug systemd-tmpfiles --clean


          You’ll see it mentioning that the change time is too new.






          share|improve this answer





















          • Thanks, that's it. On a side note, how do change file dates so that the file would be available for systemd-tmpfiles --clean?
            – menteith
            Apr 18 at 11:17










          • You can’t control the change time (other than by changing your system’s notion of the current time).
            – Stephen Kitt
            Apr 18 at 11:53










          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%2f438471%2fwhen-are-files-from-tmp-deleted%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
          5
          down vote



          accepted










          Yes, systemd-tmpfiles --clean considers change times too. You can see this by running it with debug logs enabled:



          SYSTEMD_LOG_LEVEL=debug systemd-tmpfiles --clean


          You’ll see it mentioning that the change time is too new.






          share|improve this answer





















          • Thanks, that's it. On a side note, how do change file dates so that the file would be available for systemd-tmpfiles --clean?
            – menteith
            Apr 18 at 11:17










          • You can’t control the change time (other than by changing your system’s notion of the current time).
            – Stephen Kitt
            Apr 18 at 11:53














          up vote
          5
          down vote



          accepted










          Yes, systemd-tmpfiles --clean considers change times too. You can see this by running it with debug logs enabled:



          SYSTEMD_LOG_LEVEL=debug systemd-tmpfiles --clean


          You’ll see it mentioning that the change time is too new.






          share|improve this answer





















          • Thanks, that's it. On a side note, how do change file dates so that the file would be available for systemd-tmpfiles --clean?
            – menteith
            Apr 18 at 11:17










          • You can’t control the change time (other than by changing your system’s notion of the current time).
            – Stephen Kitt
            Apr 18 at 11:53












          up vote
          5
          down vote



          accepted







          up vote
          5
          down vote



          accepted






          Yes, systemd-tmpfiles --clean considers change times too. You can see this by running it with debug logs enabled:



          SYSTEMD_LOG_LEVEL=debug systemd-tmpfiles --clean


          You’ll see it mentioning that the change time is too new.






          share|improve this answer













          Yes, systemd-tmpfiles --clean considers change times too. You can see this by running it with debug logs enabled:



          SYSTEMD_LOG_LEVEL=debug systemd-tmpfiles --clean


          You’ll see it mentioning that the change time is too new.







          share|improve this answer













          share|improve this answer



          share|improve this answer











          answered Apr 18 at 11:10









          Stephen Kitt

          140k22303364




          140k22303364











          • Thanks, that's it. On a side note, how do change file dates so that the file would be available for systemd-tmpfiles --clean?
            – menteith
            Apr 18 at 11:17










          • You can’t control the change time (other than by changing your system’s notion of the current time).
            – Stephen Kitt
            Apr 18 at 11:53
















          • Thanks, that's it. On a side note, how do change file dates so that the file would be available for systemd-tmpfiles --clean?
            – menteith
            Apr 18 at 11:17










          • You can’t control the change time (other than by changing your system’s notion of the current time).
            – Stephen Kitt
            Apr 18 at 11:53















          Thanks, that's it. On a side note, how do change file dates so that the file would be available for systemd-tmpfiles --clean?
          – menteith
          Apr 18 at 11:17




          Thanks, that's it. On a side note, how do change file dates so that the file would be available for systemd-tmpfiles --clean?
          – menteith
          Apr 18 at 11:17












          You can’t control the change time (other than by changing your system’s notion of the current time).
          – Stephen Kitt
          Apr 18 at 11:53




          You can’t control the change time (other than by changing your system’s notion of the current time).
          – Stephen Kitt
          Apr 18 at 11:53












           

          draft saved


          draft discarded


























           


          draft saved


          draft discarded














          StackExchange.ready(
          function ()
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2funix.stackexchange.com%2fquestions%2f438471%2fwhen-are-files-from-tmp-deleted%23new-answer', 'question_page');

          );

          Post as a guest
































































          -

          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

          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

          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