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By using our site, you acknowledge that you have read and understand our Cookie Policy , Privacy Policy , and our Terms of Service. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. Is there some kind of package I can install to fix this? Look here too for STL.

SEE VIDEO BY TOPIC: Linux Man Pages - A Quick Tutorial

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SEE VIDEO BY TOPIC: Linux man command summary with examples

Linux man Command Tutorial for Beginners (8 Examples)

GitHub is home to over 50 million developers working together to host and review code, manage projects, and build software together. Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community. Already on GitHub? Sign in to your account. I ran the Ubuntu I also checked which man-related packages were installed in case some package names had been changed between releases.

It only has man-db and manpages adding manpages to the above command does not fix the problem. I think this was an intentional change in the Bionic tarballs generated by Canonical in order to reduce their size:. My development environment is a tmux session inside a Docker container, so I'm in one of the rare situations where man pages are desirable.

In case anybody else runs into this problem, the solution is to just add these lines to the top of your Dockerfile:. I just ran into this issue in another situation where man pages inside containers are desirable: we use containers to perform integration tests on a package that we build: build the package, install it inside a container, make sure that our executables start up and that the man pages are there.

I know it's maybe not your decision, and I should probably be appealing to Canonical instead, but this situation seems pretty broken to me. I understand the desire to have the base image be very light, but whether my downstream images should be able to contain manpages should be left up to me. I'd prefer the excludes file be removed by default. Thanks for deciding that for us. I built a dev container to help me do some Linux dev on a macOS laptop on a flight. No man pages! Also this is really hard to Google for and I came to read the Dockerfile as a last resort; I figured I had screwed something up somehow.

Even manually installing man and reinstalling packages without --no-install-recommends didn't fix it and I wasn't sure what was wrong. One problem I see with this just trying is that "unminimize" is difficult to run in a dockerfile build.

I did an "echo y unminimize", but there's an internal upgrade that then fails due to not getting confirmation on upgrade. In my case, the resulting image is 2.

Is there a plan to support ubuntu server images as well not just core? I am trying to develop from a container and I am running into this issue. You can avoid running upgrade -y immediately before running unminimize if you use yes instead of echo y.

Another symptom of this issue that might be even harder to debug for some people: It will cause gbp import-orig to fail to work. This turned out to be because git-buildpackage was running git help merge -m my guess would be in order to test whether some certain flag was supported and that failed because it was a frontend wrapper around running man git-merge.

If you add a file in one RUN line and remove it in a later RUN line, then in some form or another the file will be included with the final docker image or in one of the layers. So if you add the file and remove it in the same RUN command, the image is smaller.

And the rm -r command is just removing the APT files that were added by apt-get update. Skip to content. Dismiss Join GitHub today GitHub is home to over 50 million developers working together to host and review code, manage projects, and build software together.

Sign up. New issue. Jump to bottom. Ubuntu Copy link Quote reply. Here's what happens with the Done Reading package lists Done Building dependency tree Reading state information Done The following additional packages will be installed: bsdmainutils groff-base libbsd0 libgdbm3 libpipeline1 Suggested packages: cpp wamerican wordlist whois vacation groff less www-browser The following NEW packages will be installed: bsdmainutils groff-base libbsd0 libgdbm3 libpipeline1 man-db 0 upgraded, 6 newly installed, 0 to remove and 2 not upgraded.

Need to get kB of archives. After this operation, kB of additional disk space will be used. Reading database Preparing to unpack Unpacking groff-base 1. Selecting previously unselected package libbsd0:amd Unpacking libbsd0:amd64 0. Selecting previously unselected package bsdmainutils. Unpacking bsdmainutils 9. Selecting previously unselected package libgdbm3:amd Unpacking libgdbm3:amd64 1.

Selecting previously unselected package libpipeline1:amd Unpacking libpipeline1:amd64 1. Selecting previously unselected package man-db. Unpacking man-db 2. Setting up libgdbm3:amd64 1. Setting up groff-base 1. Setting up libpipeline1:amd64 1. Setting up libbsd0:amd64 0. Processing triggers for libc-bin 2. Setting up bsdmainutils 9. And here's what happens with the Done The following additional packages will be installed: bsdmainutils groff-base libbsd0 libgdbm5 libpipeline1 Suggested packages: cpp wamerican wordlist whois vacation groff gdbm-l10n apparmor less www-browser The following NEW packages will be installed: bsdmainutils groff-base libbsd0 libgdbm5 libpipeline1 man-db 0 upgraded, 6 newly installed, 0 to remove and 44 not upgraded.

Unpacking bsdmainutils Selecting previously unselected package groff-base. Selecting previously unselected package libgdbm5:amd Unpacking libgdbm5:amd64 1. Setting up libgdbm5:amd64 1. Setting up bsdmainutils No manual entry for man See 'man 7 undocumented' for help when manual pages are not available.

Thank you! To restore this content, including manpages, you can run the 'unminimize' command. This script restores the content and packages that are found on a default Ubuntu server system. Reinstallation of packages may fail due to changes to the system configuration, the presence of third-party packages, or for other reasons. Would you like to continue? WillB97 mentioned this issue Oct 12, Include manpages 1. Some files are missing from new package installs on bionic containers Sign up for free to join this conversation on GitHub.

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man command in Linux with Examples

Each page argument given to man is normally the name of a program, utility or function. The manual page associated with each of these arguments is then found and displayed. A section , if provided, will direct man to look only in that section of the manual. The table below shows the section numbers of the manual followed by the types of pages they contain.

GNU find searches the directory tree rooted at each given starting-point by evaluating the given expression from left to right, according to the rules of precedence see section OPERATORS , until the outcome is known the left hand side is false for and operations, true for or , at which point find moves on to the next file name. That document also includes a lot more detail and discussion than this manual page, so you may find it a more useful source of information.

By using our site, you acknowledge that you have read and understand our Cookie Policy , Privacy Policy , and our Terms of Service. Super User is a question and answer site for computer enthusiasts and power users. It only takes a minute to sign up. In which directory can I find the files of the man pages, i.

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The command used to display them is man. In spite of their scope, man pages are designed to be self-contained documents, consequentially limiting themselves to referring to other man pages when discussing related subjects. This is in sharp contrast with the hyperlink-aware Info documents , GNU's attempt at replacing the traditional man page format. Manuals are sorted into several sections. For a full listing see the section entitled "Sections of the manual pages" in man-pages 7. Man pages are usually referred to by their name, followed by their section number in parentheses. Often there are multiple man pages of the same name, such as man 1 and man 7. In this case, give man the section number followed by the name of the man page, for example:. Man pages all follow a fairly standard format, which helps in navigating them.

Accessing man pages on Ubuntu 16.04 LTS

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GUI Methods

The find utility shall detect infinite loops; that is, entering a previously visited directory that is an ancestor of the last file encountered. When it detects an infinite loop, find shall write a diagnostic message to standard error and shall either recover its position in the hierarchy or terminate. The following options shall be supported by the implementation: -H Cause the file information and file type evaluated for each symbolic link encountered on the command line to be those of the file referenced by the link, and not the link itself. If the referenced file does not exist, the file information and type shall be for the link itself.

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Section-num : Since a manual is divided into multiple sections so this option is used to display only a specific section of a manual. So this option gives the section in which the given command is present. In this example you can move through the manual pages sections i. If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute. See your article appearing on the GeeksforGeeks main page and help other Geeks. Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below. Writing code in comment?

Nov 16, - I am little surprised to find that Ubuntu Linux skips development man pages by default on cloud-based images. A quick search using apt-cache.

A very useful aspect of the Linux command line is that the documentation for almost all command line tools is easily accessible. These documents are known as man pages, and you can easily access them through the command line using the man command. In this tutorial, we will discuss the basics of man using some easy to understand examples. But before we do that, it's worth mentioning that all examples in this article have been tested on Ubuntu The man command gives users access to manual pages for command line utilities and tools.

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