Docker – debian:stretch-slim – install man and view manpages

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When using the debian:stretch Docker image, the /usr/share/man/ directory already contains many manpages, and man can be easily installed to view them:



$ apt-get update
$ apt-get install man
$ man ls
$ man cp


However, when using the debian:stretch-slim Docker image, the /usr/share/man/ directory is intentionally empty:




These tags are an experiment in providing a slimmer base (removing some extra files that are normally not necessary within containers, such as man pages and documentation)




How do I populate the /usr/share/man/ directory, so I can use man to view manpages for core utilities (such as cat, chmod, chown, cp, ls, mkdir, mv, rm, tail, etc) ?










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    When using the debian:stretch Docker image, the /usr/share/man/ directory already contains many manpages, and man can be easily installed to view them:



    $ apt-get update
    $ apt-get install man
    $ man ls
    $ man cp


    However, when using the debian:stretch-slim Docker image, the /usr/share/man/ directory is intentionally empty:




    These tags are an experiment in providing a slimmer base (removing some extra files that are normally not necessary within containers, such as man pages and documentation)




    How do I populate the /usr/share/man/ directory, so I can use man to view manpages for core utilities (such as cat, chmod, chown, cp, ls, mkdir, mv, rm, tail, etc) ?










    share|improve this question























      up vote
      0
      down vote

      favorite









      up vote
      0
      down vote

      favorite











      When using the debian:stretch Docker image, the /usr/share/man/ directory already contains many manpages, and man can be easily installed to view them:



      $ apt-get update
      $ apt-get install man
      $ man ls
      $ man cp


      However, when using the debian:stretch-slim Docker image, the /usr/share/man/ directory is intentionally empty:




      These tags are an experiment in providing a slimmer base (removing some extra files that are normally not necessary within containers, such as man pages and documentation)




      How do I populate the /usr/share/man/ directory, so I can use man to view manpages for core utilities (such as cat, chmod, chown, cp, ls, mkdir, mv, rm, tail, etc) ?










      share|improve this question













      When using the debian:stretch Docker image, the /usr/share/man/ directory already contains many manpages, and man can be easily installed to view them:



      $ apt-get update
      $ apt-get install man
      $ man ls
      $ man cp


      However, when using the debian:stretch-slim Docker image, the /usr/share/man/ directory is intentionally empty:




      These tags are an experiment in providing a slimmer base (removing some extra files that are normally not necessary within containers, such as man pages and documentation)




      How do I populate the /usr/share/man/ directory, so I can use man to view manpages for core utilities (such as cat, chmod, chown, cp, ls, mkdir, mv, rm, tail, etc) ?







      debian docker man






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      asked 54 mins ago









      TachyonVortex

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      19316




















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          The coreutils package populates the /usr/share/man/man1/ directory with manpages for core utilities.



          However, simply running apt-get update and apt-get install coreutils is not sufficient, because dpkg has been configured to exclude /usr/share/man/*, using path-exclude in /etc/dpkg/dpkg.cfg.d/docker (see here and here).



          So the first step is to remove that line from the /etc/dpkg/dpkg.cfg.d/docker file. One way to do this is by using sed:



          $ sed -i '/path-exclude /usr/share/man/d' /etc/dpkg/dpkg.cfg.d/docker


          dpkg has also been configured to exclude /usr/share/groff/*, and this needs to be undone too (since groff is required in order to render manpages):



          $ sed -i '/path-exclude /usr/share/groff/d' /etc/dpkg/dpkg.cfg.d/docker


          Now the /usr/share/man/man1/ directory needs to be populated from the coreutils package. Since coreutils is already installed in the debian:stretch-slim Docker image, it needs to be reinstalled:



          $ apt-get update
          $ apt-get install --reinstall coreutils


          Finally, man can be installed and manpages can be viewed:



          $ apt-get install man
          $ man ls
          $ man cp


          It's also helpful to install less, which man will use for paginating the manpages, and provides a better experience than the default more paginator:



          $ apt-get install less



          Related questions:



          • Remove documentation to save hard drive space

          • Installing packages without docs

          • Reinstall man pages & fix man

          • How can I restore the man page for ls (/usr/share/man/man1/ls.1.gz)?





          share|improve this answer




















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            1 Answer
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            up vote
            0
            down vote













            The coreutils package populates the /usr/share/man/man1/ directory with manpages for core utilities.



            However, simply running apt-get update and apt-get install coreutils is not sufficient, because dpkg has been configured to exclude /usr/share/man/*, using path-exclude in /etc/dpkg/dpkg.cfg.d/docker (see here and here).



            So the first step is to remove that line from the /etc/dpkg/dpkg.cfg.d/docker file. One way to do this is by using sed:



            $ sed -i '/path-exclude /usr/share/man/d' /etc/dpkg/dpkg.cfg.d/docker


            dpkg has also been configured to exclude /usr/share/groff/*, and this needs to be undone too (since groff is required in order to render manpages):



            $ sed -i '/path-exclude /usr/share/groff/d' /etc/dpkg/dpkg.cfg.d/docker


            Now the /usr/share/man/man1/ directory needs to be populated from the coreutils package. Since coreutils is already installed in the debian:stretch-slim Docker image, it needs to be reinstalled:



            $ apt-get update
            $ apt-get install --reinstall coreutils


            Finally, man can be installed and manpages can be viewed:



            $ apt-get install man
            $ man ls
            $ man cp


            It's also helpful to install less, which man will use for paginating the manpages, and provides a better experience than the default more paginator:



            $ apt-get install less



            Related questions:



            • Remove documentation to save hard drive space

            • Installing packages without docs

            • Reinstall man pages & fix man

            • How can I restore the man page for ls (/usr/share/man/man1/ls.1.gz)?





            share|improve this answer
























              up vote
              0
              down vote













              The coreutils package populates the /usr/share/man/man1/ directory with manpages for core utilities.



              However, simply running apt-get update and apt-get install coreutils is not sufficient, because dpkg has been configured to exclude /usr/share/man/*, using path-exclude in /etc/dpkg/dpkg.cfg.d/docker (see here and here).



              So the first step is to remove that line from the /etc/dpkg/dpkg.cfg.d/docker file. One way to do this is by using sed:



              $ sed -i '/path-exclude /usr/share/man/d' /etc/dpkg/dpkg.cfg.d/docker


              dpkg has also been configured to exclude /usr/share/groff/*, and this needs to be undone too (since groff is required in order to render manpages):



              $ sed -i '/path-exclude /usr/share/groff/d' /etc/dpkg/dpkg.cfg.d/docker


              Now the /usr/share/man/man1/ directory needs to be populated from the coreutils package. Since coreutils is already installed in the debian:stretch-slim Docker image, it needs to be reinstalled:



              $ apt-get update
              $ apt-get install --reinstall coreutils


              Finally, man can be installed and manpages can be viewed:



              $ apt-get install man
              $ man ls
              $ man cp


              It's also helpful to install less, which man will use for paginating the manpages, and provides a better experience than the default more paginator:



              $ apt-get install less



              Related questions:



              • Remove documentation to save hard drive space

              • Installing packages without docs

              • Reinstall man pages & fix man

              • How can I restore the man page for ls (/usr/share/man/man1/ls.1.gz)?





              share|improve this answer






















                up vote
                0
                down vote










                up vote
                0
                down vote









                The coreutils package populates the /usr/share/man/man1/ directory with manpages for core utilities.



                However, simply running apt-get update and apt-get install coreutils is not sufficient, because dpkg has been configured to exclude /usr/share/man/*, using path-exclude in /etc/dpkg/dpkg.cfg.d/docker (see here and here).



                So the first step is to remove that line from the /etc/dpkg/dpkg.cfg.d/docker file. One way to do this is by using sed:



                $ sed -i '/path-exclude /usr/share/man/d' /etc/dpkg/dpkg.cfg.d/docker


                dpkg has also been configured to exclude /usr/share/groff/*, and this needs to be undone too (since groff is required in order to render manpages):



                $ sed -i '/path-exclude /usr/share/groff/d' /etc/dpkg/dpkg.cfg.d/docker


                Now the /usr/share/man/man1/ directory needs to be populated from the coreutils package. Since coreutils is already installed in the debian:stretch-slim Docker image, it needs to be reinstalled:



                $ apt-get update
                $ apt-get install --reinstall coreutils


                Finally, man can be installed and manpages can be viewed:



                $ apt-get install man
                $ man ls
                $ man cp


                It's also helpful to install less, which man will use for paginating the manpages, and provides a better experience than the default more paginator:



                $ apt-get install less



                Related questions:



                • Remove documentation to save hard drive space

                • Installing packages without docs

                • Reinstall man pages & fix man

                • How can I restore the man page for ls (/usr/share/man/man1/ls.1.gz)?





                share|improve this answer












                The coreutils package populates the /usr/share/man/man1/ directory with manpages for core utilities.



                However, simply running apt-get update and apt-get install coreutils is not sufficient, because dpkg has been configured to exclude /usr/share/man/*, using path-exclude in /etc/dpkg/dpkg.cfg.d/docker (see here and here).



                So the first step is to remove that line from the /etc/dpkg/dpkg.cfg.d/docker file. One way to do this is by using sed:



                $ sed -i '/path-exclude /usr/share/man/d' /etc/dpkg/dpkg.cfg.d/docker


                dpkg has also been configured to exclude /usr/share/groff/*, and this needs to be undone too (since groff is required in order to render manpages):



                $ sed -i '/path-exclude /usr/share/groff/d' /etc/dpkg/dpkg.cfg.d/docker


                Now the /usr/share/man/man1/ directory needs to be populated from the coreutils package. Since coreutils is already installed in the debian:stretch-slim Docker image, it needs to be reinstalled:



                $ apt-get update
                $ apt-get install --reinstall coreutils


                Finally, man can be installed and manpages can be viewed:



                $ apt-get install man
                $ man ls
                $ man cp


                It's also helpful to install less, which man will use for paginating the manpages, and provides a better experience than the default more paginator:



                $ apt-get install less



                Related questions:



                • Remove documentation to save hard drive space

                • Installing packages without docs

                • Reinstall man pages & fix man

                • How can I restore the man page for ls (/usr/share/man/man1/ls.1.gz)?






                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered 54 mins ago









                TachyonVortex

                19316




                19316



























                     

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