what is the file /var/lib/dpkg/status about and why do I need it





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I am new in Ubuntu. I have a trusty version. I do not get the meaning of the file status. I'va figured it out running the command:



apt-cache policy postgresql-9.6


and I got this output:



postgresql-9.6:
Installed: (none)
Candidate: (none)
Version table:
9.6.2-1.pgdg14.04+1 0
100 /var/lib/dpkg/status


What does it mean "Break" and "Replace" on file /var/lib/dpkg/status?










share|improve this question




















  • 4





    Possible duplicate of What do the numbers in the output of apt-cache policy tell us?

    – Panther
    Mar 29 '17 at 16:00











  • /var/lib/dpkg/status is the local database used by apt-cache so that you can obtain such information faster and without internet access.

    – Panther
    Mar 29 '17 at 16:15











  • @bodhi.zazen, thank you! I took a look inside of it... there are a lot of information! but in particular what does it mean for "Replaces", and "Breaks"?

    – Glori P.
    Mar 30 '17 at 8:36













  • Now you are asking very broad questions about apt and packaging. You can read the man pages, packaging guide, and debian.org/doc/manuals/debian-reference/ch02.en.html see section "2.1.6. Package dependencies"

    – Panther
    Mar 31 '17 at 15:47













  • @GloriP. Please ask question specifically regarding "Replaces" and "Breaks" Thought the link will help

    – Anwar
    Apr 16 '17 at 15:47


















2















I am new in Ubuntu. I have a trusty version. I do not get the meaning of the file status. I'va figured it out running the command:



apt-cache policy postgresql-9.6


and I got this output:



postgresql-9.6:
Installed: (none)
Candidate: (none)
Version table:
9.6.2-1.pgdg14.04+1 0
100 /var/lib/dpkg/status


What does it mean "Break" and "Replace" on file /var/lib/dpkg/status?










share|improve this question




















  • 4





    Possible duplicate of What do the numbers in the output of apt-cache policy tell us?

    – Panther
    Mar 29 '17 at 16:00











  • /var/lib/dpkg/status is the local database used by apt-cache so that you can obtain such information faster and without internet access.

    – Panther
    Mar 29 '17 at 16:15











  • @bodhi.zazen, thank you! I took a look inside of it... there are a lot of information! but in particular what does it mean for "Replaces", and "Breaks"?

    – Glori P.
    Mar 30 '17 at 8:36













  • Now you are asking very broad questions about apt and packaging. You can read the man pages, packaging guide, and debian.org/doc/manuals/debian-reference/ch02.en.html see section "2.1.6. Package dependencies"

    – Panther
    Mar 31 '17 at 15:47













  • @GloriP. Please ask question specifically regarding "Replaces" and "Breaks" Thought the link will help

    – Anwar
    Apr 16 '17 at 15:47














2












2








2


1






I am new in Ubuntu. I have a trusty version. I do not get the meaning of the file status. I'va figured it out running the command:



apt-cache policy postgresql-9.6


and I got this output:



postgresql-9.6:
Installed: (none)
Candidate: (none)
Version table:
9.6.2-1.pgdg14.04+1 0
100 /var/lib/dpkg/status


What does it mean "Break" and "Replace" on file /var/lib/dpkg/status?










share|improve this question
















I am new in Ubuntu. I have a trusty version. I do not get the meaning of the file status. I'va figured it out running the command:



apt-cache policy postgresql-9.6


and I got this output:



postgresql-9.6:
Installed: (none)
Candidate: (none)
Version table:
9.6.2-1.pgdg14.04+1 0
100 /var/lib/dpkg/status


What does it mean "Break" and "Replace" on file /var/lib/dpkg/status?







apt dpkg






share|improve this question















share|improve this question













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share|improve this question








edited Apr 24 '17 at 9:36







Glori P.

















asked Mar 29 '17 at 15:35









Glori P.Glori P.

1314




1314








  • 4





    Possible duplicate of What do the numbers in the output of apt-cache policy tell us?

    – Panther
    Mar 29 '17 at 16:00











  • /var/lib/dpkg/status is the local database used by apt-cache so that you can obtain such information faster and without internet access.

    – Panther
    Mar 29 '17 at 16:15











  • @bodhi.zazen, thank you! I took a look inside of it... there are a lot of information! but in particular what does it mean for "Replaces", and "Breaks"?

    – Glori P.
    Mar 30 '17 at 8:36













  • Now you are asking very broad questions about apt and packaging. You can read the man pages, packaging guide, and debian.org/doc/manuals/debian-reference/ch02.en.html see section "2.1.6. Package dependencies"

    – Panther
    Mar 31 '17 at 15:47













  • @GloriP. Please ask question specifically regarding "Replaces" and "Breaks" Thought the link will help

    – Anwar
    Apr 16 '17 at 15:47














  • 4





    Possible duplicate of What do the numbers in the output of apt-cache policy tell us?

    – Panther
    Mar 29 '17 at 16:00











  • /var/lib/dpkg/status is the local database used by apt-cache so that you can obtain such information faster and without internet access.

    – Panther
    Mar 29 '17 at 16:15











  • @bodhi.zazen, thank you! I took a look inside of it... there are a lot of information! but in particular what does it mean for "Replaces", and "Breaks"?

    – Glori P.
    Mar 30 '17 at 8:36













  • Now you are asking very broad questions about apt and packaging. You can read the man pages, packaging guide, and debian.org/doc/manuals/debian-reference/ch02.en.html see section "2.1.6. Package dependencies"

    – Panther
    Mar 31 '17 at 15:47













  • @GloriP. Please ask question specifically regarding "Replaces" and "Breaks" Thought the link will help

    – Anwar
    Apr 16 '17 at 15:47








4




4





Possible duplicate of What do the numbers in the output of apt-cache policy tell us?

– Panther
Mar 29 '17 at 16:00





Possible duplicate of What do the numbers in the output of apt-cache policy tell us?

– Panther
Mar 29 '17 at 16:00













/var/lib/dpkg/status is the local database used by apt-cache so that you can obtain such information faster and without internet access.

– Panther
Mar 29 '17 at 16:15





/var/lib/dpkg/status is the local database used by apt-cache so that you can obtain such information faster and without internet access.

– Panther
Mar 29 '17 at 16:15













@bodhi.zazen, thank you! I took a look inside of it... there are a lot of information! but in particular what does it mean for "Replaces", and "Breaks"?

– Glori P.
Mar 30 '17 at 8:36







@bodhi.zazen, thank you! I took a look inside of it... there are a lot of information! but in particular what does it mean for "Replaces", and "Breaks"?

– Glori P.
Mar 30 '17 at 8:36















Now you are asking very broad questions about apt and packaging. You can read the man pages, packaging guide, and debian.org/doc/manuals/debian-reference/ch02.en.html see section "2.1.6. Package dependencies"

– Panther
Mar 31 '17 at 15:47







Now you are asking very broad questions about apt and packaging. You can read the man pages, packaging guide, and debian.org/doc/manuals/debian-reference/ch02.en.html see section "2.1.6. Package dependencies"

– Panther
Mar 31 '17 at 15:47















@GloriP. Please ask question specifically regarding "Replaces" and "Breaks" Thought the link will help

– Anwar
Apr 16 '17 at 15:47





@GloriP. Please ask question specifically regarding "Replaces" and "Breaks" Thought the link will help

– Anwar
Apr 16 '17 at 15:47










2 Answers
2






active

oldest

votes


















2














Some details can be found at https://www.debian.org/doc/manuals/debian-reference/ch02.en.html#_the_dpkg_command



As best as I can tell from reading that, the status file contains status information (of course) about packages.



Based on looking at my own status file, most packages seem to have "Status: install ok installed" (I've found thousands of these). I assume this means that those packages are installed properly. I have a couple dozen or so packages that have some other package.






share|improve this answer































    0














    I came to this question when I needed to find what repository given version comes from, and it looks like /var/lib/dpkg/status means currently installed package, and in the OP's example it show that the version is installed, but not currently available from any repository.



    This is output I get when the package is available:



    # apt-cache policy dpkg
    dpkg:
    Installed: 1.16.18
    Candidate: 1.16.18
    Version table:
    *** 1.16.18 0
    500 http://repo/mirror/debian/ wheezy/main amd64 Packages
    100 /var/lib/dpkg/status
    1.16.17 0
    500 http://repo/mirror/debian/ wheezy-security/main amd64 Packages





    share|improve this answer
























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      2 Answers
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      2 Answers
      2






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      Some details can be found at https://www.debian.org/doc/manuals/debian-reference/ch02.en.html#_the_dpkg_command



      As best as I can tell from reading that, the status file contains status information (of course) about packages.



      Based on looking at my own status file, most packages seem to have "Status: install ok installed" (I've found thousands of these). I assume this means that those packages are installed properly. I have a couple dozen or so packages that have some other package.






      share|improve this answer




























        2














        Some details can be found at https://www.debian.org/doc/manuals/debian-reference/ch02.en.html#_the_dpkg_command



        As best as I can tell from reading that, the status file contains status information (of course) about packages.



        Based on looking at my own status file, most packages seem to have "Status: install ok installed" (I've found thousands of these). I assume this means that those packages are installed properly. I have a couple dozen or so packages that have some other package.






        share|improve this answer


























          2












          2








          2







          Some details can be found at https://www.debian.org/doc/manuals/debian-reference/ch02.en.html#_the_dpkg_command



          As best as I can tell from reading that, the status file contains status information (of course) about packages.



          Based on looking at my own status file, most packages seem to have "Status: install ok installed" (I've found thousands of these). I assume this means that those packages are installed properly. I have a couple dozen or so packages that have some other package.






          share|improve this answer













          Some details can be found at https://www.debian.org/doc/manuals/debian-reference/ch02.en.html#_the_dpkg_command



          As best as I can tell from reading that, the status file contains status information (of course) about packages.



          Based on looking at my own status file, most packages seem to have "Status: install ok installed" (I've found thousands of these). I assume this means that those packages are installed properly. I have a couple dozen or so packages that have some other package.







          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered Apr 18 '17 at 7:07









          allyourcodeallyourcode

          12410




          12410

























              0














              I came to this question when I needed to find what repository given version comes from, and it looks like /var/lib/dpkg/status means currently installed package, and in the OP's example it show that the version is installed, but not currently available from any repository.



              This is output I get when the package is available:



              # apt-cache policy dpkg
              dpkg:
              Installed: 1.16.18
              Candidate: 1.16.18
              Version table:
              *** 1.16.18 0
              500 http://repo/mirror/debian/ wheezy/main amd64 Packages
              100 /var/lib/dpkg/status
              1.16.17 0
              500 http://repo/mirror/debian/ wheezy-security/main amd64 Packages





              share|improve this answer




























                0














                I came to this question when I needed to find what repository given version comes from, and it looks like /var/lib/dpkg/status means currently installed package, and in the OP's example it show that the version is installed, but not currently available from any repository.



                This is output I get when the package is available:



                # apt-cache policy dpkg
                dpkg:
                Installed: 1.16.18
                Candidate: 1.16.18
                Version table:
                *** 1.16.18 0
                500 http://repo/mirror/debian/ wheezy/main amd64 Packages
                100 /var/lib/dpkg/status
                1.16.17 0
                500 http://repo/mirror/debian/ wheezy-security/main amd64 Packages





                share|improve this answer


























                  0












                  0








                  0







                  I came to this question when I needed to find what repository given version comes from, and it looks like /var/lib/dpkg/status means currently installed package, and in the OP's example it show that the version is installed, but not currently available from any repository.



                  This is output I get when the package is available:



                  # apt-cache policy dpkg
                  dpkg:
                  Installed: 1.16.18
                  Candidate: 1.16.18
                  Version table:
                  *** 1.16.18 0
                  500 http://repo/mirror/debian/ wheezy/main amd64 Packages
                  100 /var/lib/dpkg/status
                  1.16.17 0
                  500 http://repo/mirror/debian/ wheezy-security/main amd64 Packages





                  share|improve this answer













                  I came to this question when I needed to find what repository given version comes from, and it looks like /var/lib/dpkg/status means currently installed package, and in the OP's example it show that the version is installed, but not currently available from any repository.



                  This is output I get when the package is available:



                  # apt-cache policy dpkg
                  dpkg:
                  Installed: 1.16.18
                  Candidate: 1.16.18
                  Version table:
                  *** 1.16.18 0
                  500 http://repo/mirror/debian/ wheezy/main amd64 Packages
                  100 /var/lib/dpkg/status
                  1.16.17 0
                  500 http://repo/mirror/debian/ wheezy-security/main amd64 Packages






                  share|improve this answer












                  share|improve this answer



                  share|improve this answer










                  answered Feb 15 at 9:46









                  cheche

                  1034




                  1034






























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