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Questions tagged [manpage]

A manpage is a piece of documentation (not just a single page) that comes with most programs installed on Ubuntu.This is invoked with the name of a program to call up a help manual with various sections detailing the operation of the program.

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Restore mandb-triggers after unminimizing installation

The Problem I've installed Ubuntu 22.04 with minimized installation, then I "unmimized" it by executing sudo unminimize. However, the man package was not originally present and thus mandb-...
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Find the version of a program using the hash

how could i verify that the man is up to date for a command with the hash? md5sum pwd md5sum $(whereis history | awk '{print $2}')) man history presents: "The GNU History Library is Copyright (C) ...
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No info on man-page, or on info-page for read command options

I'm new to Ubuntu. I've read (I think) that man pages had all the information one would want... However, more often than not, I find commands whose man pages are left wanting. Two examples: Command ...
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2 answers
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How can I correct faulty $MANPATH(environment variable)?

My manpath seems to direct itself to the wrong file. when I call echo $MANPATH I get this output: /usr/local/texlive/2021/texmf-dist/doc/man and when I try to use man pages for anything like ls or ...
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14 votes
5 answers
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How do I get a readable printed copy of a man page

I've a largish man page (psql) that I'm trying to digest. I've tried redirecting the output of man to a file, but the output confuses LibreOffice enough that whole pages are missing, even if I ...
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I can't update nor install themes , everytime I do , it displays this error [duplicate]

N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. . literally for ...
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Searching for Commands

I am new here, so thanks for accepting me. Ok, so I have a really dum question, sorry, I am presently still learning. So what if, I had no idea of what commands are available for a specific task or ...
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Why can't I search with slash in the terminal?

After opening any man page and pressing / there is no reaction from man. Although if I open files with vim everything works fine and I can search through them. $ uname -v #47~20.04.2-Ubuntu SMP Mon ...
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Trying to tweak my sudo configuration

so I am trying to tweak my sudo configuration(sudo visudo -f /etc/sudo.conf) but unfortunately the following errors appeared ??? /etc/sudo.conf:16:22: syntax error Plugin sudoers_audit sudoers.so ...
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Help on function options [closed]

I am writing documentation for a bash function that I am writing. It supports a colour option which can be one of --vlt --blu --grn --ylw --orn --pur --red --wht. I have used the following ...
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What does the command `~man cd` mean? [duplicate]

I accidentally ran the command ~man cd in the terminal and it returned bash: /var/cache/man: Is a directory leaving me scratching my head. What is the meaning of the output here? cd is a shell-builtin ...
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How to determine the location of the main man page directory

I have an install script for a little program (script) that comes with man pages. How can I find the location (full path) of the main man page directory? As manpath gives me a list of directories, I ...
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Man pages displaying oddly

I've noticed this happening to man pages just recently: It's happened a few times before but seemed to have resolved itself, through updates I imagine. Any advice on how to fix? Thanks. Ubuntu 21.04
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2 votes
2 answers
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No manual entry for chdir

I tried to look up for this common error, but I was shocked to find out there is no one simple solution, all are very specific to the issue. My issue is, on Ubuntu 20.04 LTS, that I try to run man ...
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4 votes
1 answer
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Where is the man or manpage for a flatpak application?

How would I read the man page for calibre when it's installed from flatpak as below? nicholas@gondor:~$ nicholas@gondor:~$ flatpak info com.calibre_ebook.calibre calibre - The one stop solution to ...
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2 votes
3 answers
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How to run or execute the ebook-convert script from a flatpak install of calibre?

Where and how can I run the ebook-convert script for calibre from the console? nicholas@gondor:~$ nicholas@gondor:~$ flatpak info com.calibre_ebook.calibre calibre - The one stop solution to all ...
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man command showing: nothing appropriate

When I type the command man -k which the console display which: nothing appropriate. I using Ubuntu 18.04.3
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Where is the manpage of endsgent?

https://code.woboq.org/userspace/glibc/gshadow/gshadow.h.html I don't find the manpage of endsgent. Does anybody know which package has the manpage for endsgent?
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Change location for man pages

Until Ubuntu 18.04, if you wanted to change the man pages location, you just have to execute something like this (depending on the desired language you wanted, in this case, spanish): sudo apt install ...
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No manual entry for interfaces

I was reading through Ubuntu 20.04 documentation and in the TCP/IP Configuration section there is a tip about man interfaces command. When i try to use it, I get No manual entry for interfaces. I ...
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X11 apps (specifically xman) on a large 4K TV are tiny -- how does one upscale x11 apps? OR Have any recommendations for a man page GUI?[Ubuntu 20.04]

OS: Ubuntu 20.04 Display: 4096 × 2160 on a 4K TV Display Settings: Use interface scaling: Double (Hi-DPI) Howdy friends. I am rocking a 65-inch (165cm) TV as a monitor at 4K resolution on Ubuntu 20....
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How to download the manpages of all ubuntu packages at one shot?

Is there a way to download the manpages of all ubuntu packages without installing the packages. I just want to look up the manpages in a non-ubuntu machine. So I don't want to and can not install the ...
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1 answer
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Iterating over man page's parameter options by script

This might be a really stupid question but I really haven't found an answer or even information that would help me with what I am trying to do. I just wanted to know if it is somehow possible to ...
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1 vote
1 answer
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How to install the `htop` manpage?

I have htop installed via snap, but apparently the man page (man htop) is not installed. Is it possible to install this?
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sudo is required to view manpages when using most as the pager

I've installed most to be used as the default pager to view the man pages. most is exported as the PAGER in .bashrc. When I run a command like man grep I get the following error: man: can't execute “...
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Lack of some manual entries

I tried to find some manual entries e.g. man 3p printf, man stdlib.h (in general any posix section 3 entries, nor C libraries), but I'm getting a message that there are no manual entries for them. The ...
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8 votes
2 answers
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How to use grep to search for options in a man page? [duplicate]

I want to search for specific options like -s, -f, -l in a manpage and display only the results that contain info on what those options do. I tried this command hoping that the single quotes would ...
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Uneven spacing in man pages

What I have observed is that there is uneven spacing in the text in the man pages. Between some words there is a single space, where as some words have a double spacing. What I have observed is that ...
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Man page for jdk commands like jshell, jlink

On ubuntu, I have installed java doc via command: sudo apt install openjdk-11-doc But, still can't find any doc via man jlink. Does that means javadoc doesn't include man page for jlink or I didn't ...
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3 votes
1 answer
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What does it contain in linux manual's section 9 of Kernel routines

There are 9 sections in Linux manuals. of which, the ninth is Kernel routines [Non standard]. I check my Kubuntu but get no results feedback. $ man -s 9 -k . .: nothing appropriate. What does it ...
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Ubuntu Server on-line manual incomplete

I've realized that man in Ubuntu Server (Bionic) is incomplete if compared with Ubuntu Desktop (Bionic) version. I searched for some system calls like fork using the command man 2 fork and it return ...
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How to directly run the examples of "man" for a particular function [duplicate]

man function are best way for learning new information in Ubuntu. They are the most extensive source possible. Every man has a section of **Example (in majority of cases),my query is on ways to use it ...
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How to display classic man page from local file with troff format?

I have a file with troff format and would like to recast to man page file.txt: .. c:function:: bool is_module_percpu_address (unsigned long addr) test whether address is from module static ...
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Man doesn't work on Ubuntu 18.04

I recently updated my machine from Ubuntu 16 to 18 Now man doesn't work at all man man man: nroff: Bad system call (core dumped) man: command exited with status 159: (cd /usr/share/man && /...
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apt upgrade command option not explained in man or --help

There is a -u option in this command: apt -u upgrade Can anyone explain what -u option stands here for ? And why isnt' it explained in the man apt
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How to Install Flashforge FlashPrint 3D app in Ubuntu

Sorry.. completely new to linux so go easy.. and none of the .man threads seem to make any sense to me. I have downloaded the flashprint 3d software from flashforge and within the zip file (...
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man shows old version of g++ despite installing newer version

I've installed gcc-9 and g++-9 as written in this answer answer and updated the alternatives as shown in the comment, still when I type man g++ it shows the man page of the previous version. The ...
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MAN pages are not displaying properly

man ls command output My man pages are not displaying properly in Ubunut 16.04 The command line arguments are not displaying, instead of them comma is being displayed as shown in attached image above....
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1 answer
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How to add man page for postgres?

I just install postgres 9.6 inside my /opt directory. I want to show the man page of the postgres. While I type man postgres, it says, No manual entry for postgres. I think this error may arises ...
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Is there any way to get table of contents of a man page?

Some man pages are very big. I want firstly to see table of contents and then go to interesting section. How to do it? For example: $ man -contents ls NAME SYNOPSIS DESCRIPTION AUTHOR REPORTING ...
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How to change Manual pages default font?

When I type man fork, terminal output, but I dislike the default font , how to change into the other font?
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Changing /bin/sh to zsh crashes man pages

Just a general curiosity: Man pages on my Ubuntu 18.04.03 stop working when I change /bin/sh to zsh with following error: man: nroff: Bad system call (core dumped) What I did was: rm -rf /bin/sh ...
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Yelp line is too wide for man pages

I am generally using yelp (the life preserver icon on the desktop) to view system man pages. After I open yelp, I can press Ctrl+L and enter man:man for example to view the man page for the man ...
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2 votes
1 answer
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What does "-ls" do when used with "find"?

According to man find: -ls True; list current file in ls -dils format on standard output. The block counts are of 1K blocks, unless the environment variable POSIXLY_CORRECT is set, in ...
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How do you know the manpages name for a given package?

Take for instance the python3-requests package. I see that there is /usr/share/doc/python3-requests but I can't seem to figure out the manpages "name". Given an installed package, is there a way to ...
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Can't find the manual for jobs [duplicate]

I have jobs installed in my system and it works indeed. However, when I typed man jobs and pressed enter, the terminal told me No manual entry for jobs Do you have the same problem? Or how can I ...
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5 votes
1 answer
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What package provides system call man pages on Ubuntu?

On Ubuntu 18.04, the following commands do not turn up any man pages: man 2 creat man 2 ioctl man 2 chown There are plenty of other examples, but these illustrate the point. I tried a bit of apt ...
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2 votes
2 answers
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How do I perform a exact match in man page?

For exmaple, I open man page of tar and I want to locate -z quickly. But when I type /-z, things like -i, --ignore-zeros also get matched. So I have to press n several times to reach -z. However, I ...
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Ubuntu 18.04 LTS on my MSI laptop, man command does not work anymore

The installation had no problem and man was working fine till yesterday. However, today the man command does not work anymore. Please help troubleshoot. Thanks mas192
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watch --beep doesn't work

I read watch command's manual page, found -b or --beep: -b, --beep Beep if command has a non-zero exit. So I did: $ watch --beep ls /root Using a non-root account and it doesn't make a sound like a ...
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