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What's the differences between yum list updates and yum list obsoletes?


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The document states:




yum list obsoletes



List the packages installed on the system that are obsoleted by packages in any yum repository listed in the config file.



yum list updates



List all packages with updates available in the yum repositories.




As I understand, if a package has update available, it is obsolete, right? So what's the differences between them?










share|improve this question































    0















    The document states:




    yum list obsoletes



    List the packages installed on the system that are obsoleted by packages in any yum repository listed in the config file.



    yum list updates



    List all packages with updates available in the yum repositories.




    As I understand, if a package has update available, it is obsolete, right? So what's the differences between them?










    share|improve this question



























      0












      0








      0








      The document states:




      yum list obsoletes



      List the packages installed on the system that are obsoleted by packages in any yum repository listed in the config file.



      yum list updates



      List all packages with updates available in the yum repositories.




      As I understand, if a package has update available, it is obsolete, right? So what's the differences between them?










      share|improve this question














      The document states:




      yum list obsoletes



      List the packages installed on the system that are obsoleted by packages in any yum repository listed in the config file.



      yum list updates



      List all packages with updates available in the yum repositories.




      As I understand, if a package has update available, it is obsolete, right? So what's the differences between them?







      yum software-updates






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      share|improve this question











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      asked yesterday









      Just a learnerJust a learner

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          You usually don't have all the packages from the repository on your local system but only a subset of them.



          yum list updates lists all packages in the repositories that have updates. This is a superset of the packages on your system that have updates available.



          The usual command for checking whether there are updates for the packages on your system is yum check-update, which has the following description in the man page (emphasis mine):




          Implemented so you could know if your machine had any updates
          that needed to be applied without running it interactively.
          Returns exit value of 100 if there are packages available for
          an update. Also returns a list of the packages to be updated
          in list format. Returns 0 if no packages are available for
          update. Returns 1 if an error occurred. Running in verbose
          mode also shows obsoletes
          .




          One interesting difference between yum list obsoletes and yum check-update is that the former command also accepts a glob expression to narrow down the list of packages that may be obsoleted by packages in the repositories. yum check-update does not accept such a glob expression.






          share|improve this answer




























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            You usually don't have all the packages from the repository on your local system but only a subset of them.



            yum list updates lists all packages in the repositories that have updates. This is a superset of the packages on your system that have updates available.



            The usual command for checking whether there are updates for the packages on your system is yum check-update, which has the following description in the man page (emphasis mine):




            Implemented so you could know if your machine had any updates
            that needed to be applied without running it interactively.
            Returns exit value of 100 if there are packages available for
            an update. Also returns a list of the packages to be updated
            in list format. Returns 0 if no packages are available for
            update. Returns 1 if an error occurred. Running in verbose
            mode also shows obsoletes
            .




            One interesting difference between yum list obsoletes and yum check-update is that the former command also accepts a glob expression to narrow down the list of packages that may be obsoleted by packages in the repositories. yum check-update does not accept such a glob expression.






            share|improve this answer






























              1















              You usually don't have all the packages from the repository on your local system but only a subset of them.



              yum list updates lists all packages in the repositories that have updates. This is a superset of the packages on your system that have updates available.



              The usual command for checking whether there are updates for the packages on your system is yum check-update, which has the following description in the man page (emphasis mine):




              Implemented so you could know if your machine had any updates
              that needed to be applied without running it interactively.
              Returns exit value of 100 if there are packages available for
              an update. Also returns a list of the packages to be updated
              in list format. Returns 0 if no packages are available for
              update. Returns 1 if an error occurred. Running in verbose
              mode also shows obsoletes
              .




              One interesting difference between yum list obsoletes and yum check-update is that the former command also accepts a glob expression to narrow down the list of packages that may be obsoleted by packages in the repositories. yum check-update does not accept such a glob expression.






              share|improve this answer




























                1














                1










                1









                You usually don't have all the packages from the repository on your local system but only a subset of them.



                yum list updates lists all packages in the repositories that have updates. This is a superset of the packages on your system that have updates available.



                The usual command for checking whether there are updates for the packages on your system is yum check-update, which has the following description in the man page (emphasis mine):




                Implemented so you could know if your machine had any updates
                that needed to be applied without running it interactively.
                Returns exit value of 100 if there are packages available for
                an update. Also returns a list of the packages to be updated
                in list format. Returns 0 if no packages are available for
                update. Returns 1 if an error occurred. Running in verbose
                mode also shows obsoletes
                .




                One interesting difference between yum list obsoletes and yum check-update is that the former command also accepts a glob expression to narrow down the list of packages that may be obsoleted by packages in the repositories. yum check-update does not accept such a glob expression.






                share|improve this answer













                You usually don't have all the packages from the repository on your local system but only a subset of them.



                yum list updates lists all packages in the repositories that have updates. This is a superset of the packages on your system that have updates available.



                The usual command for checking whether there are updates for the packages on your system is yum check-update, which has the following description in the man page (emphasis mine):




                Implemented so you could know if your machine had any updates
                that needed to be applied without running it interactively.
                Returns exit value of 100 if there are packages available for
                an update. Also returns a list of the packages to be updated
                in list format. Returns 0 if no packages are available for
                update. Returns 1 if an error occurred. Running in verbose
                mode also shows obsoletes
                .




                One interesting difference between yum list obsoletes and yum check-update is that the former command also accepts a glob expression to narrow down the list of packages that may be obsoleted by packages in the repositories. yum check-update does not accept such a glob expression.







                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered yesterday









                Christophe StrobbeChristophe Strobbe

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