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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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Which pager opens when we view man in terminal? [duplicate]

As we know, there are multiple pagers available like less, more, etc. So, I was wondering which pager opens when we view the manual of any command using: man command I do believe that it’s less, but ...
Akash's user avatar
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How do I tell `man` to use `batcat` to view man pages?

I would like to use batcat (or bat for short) to view man pages, because batcat will implement syntax highlighting with different colours. I've installed batcat like this: sudo apt install bat I ...
Flimm's user avatar
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4 votes
1 answer
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man calling nroff with invalid option -P

Whenever I try to open a man page, I receive an error: $ man man man: command exited with status 1: (cd /usr/share/man && /usr/libexec/man-db/zsoelim) | (cd /usr/share/man && /usr/...
Alsbaldur's user avatar
1 vote
1 answer
123 views

How to access the manpage fo a flatpak application?

Where does one find the manpage of a flatpak application? For example, I know that Thunderbird usually has a manpage. However, I have tried the following two commands to no avail. [user ~]$ man ...
abrac's user avatar
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1 answer
113 views

How do I view the manual page for Firefox snap

I'm using Firefox 113.02 on Ubuntu 22.04. These commands produce nothing: ._. man firefox No manual entry for firefox ._. find / -name "man" -xdev 2>/dev/null | grep firefox I can see ...
markling's user avatar
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1 answer
525 views

No man page for strcpy_s

I don't have the man page for some c11 string functions such as strcpy_s and strncpy_s. I have the most updated version of gcc but somehow it doesn't recognize gcc -std=c11 -D_DEFAULT_SOURCE -Wall -...
Nicholas Humphrey's user avatar
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1 answer
46 views

How to print the manual of gzip program

I am new to Linux and I need to print the manual of gzip program but I am not able to figure it out. I have written the command man gzip but I am not sure whether it is reading or printing it. I am ...
Zeeshan Xafar's user avatar
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1 answer
133 views

Why is `man 3 printf` almost one year behind `glibc ver 2.35`?

glibc ver 2.35 was released 0n Feb 3, 2022, and added the %b and %B binary conversion specifiers. This is a long wished-for feature to display values as a string of "ones and zeros". I'd ...
Seamus's user avatar
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1 vote
1 answer
761 views

apt-key command: What is the difference among '--recv-key', '--recv-keys' and '--recv' options?

For documentation purposes, about the apt-key command in many places I found these two variations: sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys PUBKEY sudo apt-key adv --...
Manuel Jordan's user avatar
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1k views

magic file capable of detecting file types

how to make a magic file called ft_magic that will be formatted appropriately to detect files of 42 file type, built with a "42" string at the 42nd byte. i tried to make a ft_magic file ...
Thomas Schätzing's user avatar
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1 answer
159 views

How to set Vi key bindings for man pages

How can I set J/K keys to go up and down in manpages? In less the keys work, but for some reason, manpages have configured J to be used for go to line. So when I accidentally press J, I am always ...
Vaisakh K M's user avatar
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1 answer
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How do I link to a manpage on ubuntu.com without specifying an Ubuntu release?

Ubuntu has a website providing the manual pages ("manpage") shipped with Ubuntu packages. For example, here are the manpages for rsync: Ubuntu version Link to rsync manpage Ubuntu 18.04 ...
Flimm's user avatar
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6 votes
2 answers
5k views

Missing manpages on a Ubuntu LTS 22.04 Server minimal install

I've installed a 22.04 LTS Ubuntu Server as a minimal install and installed the following packages : vim man-db manpages dialog bash-completion screen Now when I run man ls, ubuntu is asking me to ...
SebMa's user avatar
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1 answer
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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-...
Peter Zaitcev's user avatar
-1 votes
1 answer
69 views

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) ...
Ignacio del Corro's user avatar
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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 ...
An old man in the sea.'s user avatar
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2 answers
413 views

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 ...
Ersel Hengirmen's user avatar
15 votes
5 answers
4k views

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 ...
4dummies's user avatar
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-1 votes
1 answer
257 views

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 ...
Chilli Dev's user avatar
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1 answer
102 views

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 ...
spudderick's user avatar
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0 answers
100 views

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 ...
Andrew Sultan's user avatar
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1 answer
230 views

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 ...
Zorono's user avatar
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1 answer
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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 ...
Fatipati's user avatar
2 votes
2 answers
1k views

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 ...
user30424's user avatar
  • 263
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0 answers
39 views

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
vaskark's user avatar
  • 253
2 votes
2 answers
2k views

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 ...
Investing TS's user avatar
5 votes
1 answer
379 views

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 ...
Nicholas Saunders's user avatar
3 votes
3 answers
2k views

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 ...
Nicholas Saunders's user avatar
1 vote
1 answer
442 views

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
Natalia Duran's user avatar
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0 answers
46 views

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?
user1424739's user avatar
1 vote
0 answers
102 views

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 ...
Ommadawn's user avatar
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1 answer
896 views

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 ...
IlmarsL's user avatar
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1 answer
418 views

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....
David Moore's user avatar
0 votes
0 answers
82 views

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 ...
user1424739's user avatar
0 votes
1 answer
53 views

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 ...
NewOasis's user avatar
2 votes
1 answer
295 views

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?
red_trumpet's user avatar
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0 votes
0 answers
195 views

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 “...
demhareesan's user avatar
0 votes
1 answer
45 views

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 ...
MartinYakuza's user avatar
9 votes
2 answers
2k views

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 ...
user avatar
0 votes
1 answer
184 views

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 ...
Abhay Patil's user avatar
  • 2,735
0 votes
1 answer
171 views

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 ...
Eric's user avatar
  • 510
3 votes
1 answer
1k views

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 ...
Wizard's user avatar
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0 votes
1 answer
76 views

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 ...
aledruetta's user avatar
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0 answers
25 views

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 ...
Praveen Kumar-M's user avatar
1 vote
0 answers
39 views

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 ...
Herdsman's user avatar
  • 131
0 votes
1 answer
1k views

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 && /...
Almas Abdrazak's user avatar
0 votes
1 answer
216 views

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
Tomas.R's user avatar
  • 423
1 vote
2 answers
4k views

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 (...
Nicholas's user avatar
1 vote
0 answers
209 views

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 ...
vib_29's user avatar
  • 11
0 votes
0 answers
406 views

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....
Lokesh Chebrolu's user avatar

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