Questions tagged [documentation]

Manuals or other information for system users detailing software features and functionality.

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Where is the wpa_supplicant.conf option "update_config=1" documented?

First of all, I know what the option does. According to the Arch Linux Wiki, it gives the command line "wpa_cli" utility the permission to rewrite wpa_supplicant.conf: Warning: Setting ...
Aubergone's user avatar
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ansible-doc getting started?

Is there a vimtutor eqvivalent to ansible? I know I can read up on the syntax of a particular module using ansible-doc <module> - but what if I can't recall the module name? If I find myself ...
azzid's user avatar
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Kernel-mounted vs FUSE-mounted exfat filesystem

I have read that support for the exfat filesystem has been incorporated in the Linux kernel since kernel ver 5.4 was released in late 2019 - early 2020. I'm confused about what this means wrt the ...
Seamus's user avatar
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Getting 'emacs-common-non-dfsg' from Debian bookworm-backports

This in reference to this question. Many thanks to user Marcus Müller for providing the silver bullet for getting Emacs 29 from Debian backports. I've done this already, and profited. However, one ...
bci_'s user avatar
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1 answer
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How do I install the manual pages on NetBSD?

I've done a "Minimal" installation of NetBSD 9.3 from the ISO image, just to examine the behavior of one particular command (mktemp) as it differs from Linux. I'm not seeing man pages for… ...
TheDudeAbides's user avatar
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1 answer
26 views

Does Debian ship the documentation for btrfs?

While researching the answer for this question, I noticed there is a documentation page for man 5 btrfs that I see online. But I don't see that on Debian 12. Did this get shipped at all? How can I ...
Evan Carroll's user avatar
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Busybox support for ANSI escape codes?

I am working on some scripts that must run inside of initramfs. One of the scripts does an operation that takes a few minutes, so I want to display a nice progress bar that updates in-place, add in a ...
Gogeta70's user avatar
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12 votes
3 answers
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Where is the syntax for /etc/environment documented?

I want to know the exact syntax for /etc/environment. I know it's not an ordinary shell script, but how exactly are single and double quotes processed? Can environment variables defined earlier in the ...
nerdfever.com's user avatar
-2 votes
1 answer
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Get help for zsh builtin command (--help' does not work) [closed]

Why, unlike Bash, almost all Zsh executable's option of '--help' cannot work, what'd be its counterpart to help user doing on it ?
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Error when trying to build Linux documentation

I have Linux git repository cloned, latest version of sphinx, GNU make, python, and all dependencies handled, running on MacOS (making the documentation to modify Linux on a VM), I am getting the ...
user129393192's user avatar
1 vote
1 answer
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Standard utilities notation for SYNOPSIS sections

I want to construct a program utility synopsis for optional comma separated keywords. utility [KEYWORD[,KEYWORD]...] I worder where I should put the repeating pattern .... I want to allow the ...
Vera's user avatar
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Where can I find the documentation for the Linux NPU API?

For example the Samsung Galaxy S10 has an Exynos 9820 CPU with integrated NPU. We all know Android is based on Linux. So where can I find the Linux API documentation about how to interact with the NPU?...
zomega's user avatar
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1 answer
1k views

Character Classes in GNU grep manual

Trying to understand why does the grep manual state the character classes with one square bracket. https://www.gnu.org/software/grep/manual/html_node/Character-Classes-and-Bracket-Expressions.html For ...
john smith's user avatar
1 vote
2 answers
92 views

Multi-line documentation for bash inspired by lisp

I want to print some usage information for some functions. I customarily use echo or printf for each line. echo "-V, --version" echo " Display the version number and copyrights ...
Vera's user avatar
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(Linux Mint) Does selecting "Encrypt Home Folder" after you chose Full Disk Encryption only encrypt the home folder?

I am not new to Linux but I am new to Linux Mint since I switched from Ubuntu due to reasons out of scope of this question (snapd, update borked my computer) I selected for FDE (Full Disk Encryption) ...
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How do I preview a unix document file? [duplicate]

I want to preview these unix docs : https://github.com/axboe/liburing/tree/master/man , what should I do?
Rick's user avatar
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systemd - does the `DynamicUser` option work with user units and if so, how?

For systemd's system units (the units you operate with systemctl --system (default)), it's possible to specify DynamicUser=yes to make systemd dynamically allocate a user and group for the service to ...
cyqsimon's user avatar
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Where to find purpose of each system default Groups and Users in Linux

when I cat /etc/group and cat /etc/passwd I get a list in which I find many I don't know. I know only group sudo group. But there is are many which I don't knows such as sys, adm .... I like to learn ...
zakadmin's user avatar
3 votes
1 answer
42 views

Debian or other convention for installing info files in multiple languages

I am working on the installation for Maxima, a computer algebra system. The reference manual is written as a collection of Texinfo files. The primary documentation is English, but there are several ...
Robert Dodier's user avatar
1 vote
1 answer
130 views

What is the official 'man' location in the web?

I had the following experience: ps command: how to know all the headers with their respective descriptions? The answer is totally valid, the man available by the OS itself is not updated, so the web ...
Manuel Jordan's user avatar
1 vote
1 answer
64 views

How to get help on vim's `complete` variable, not vim's `complete' function?

In vim, there is both a function and a variable called complete. If you do help complete, you get the function's help. How do you get the help for the variable?
Ana's user avatar
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1 answer
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Where are the kernel arguments documented?

I want to read more about the Linux Kernel argument for memtest. Where can I find out more information about the arguments my kernel accepts?
Evan Carroll's user avatar
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2 votes
1 answer
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List of all file command outputs?

The file -b <path> command seems useful for scripting (filtering file types, not necessarily by extension). But for that you have to know the actual string output for your target filetype(s) If ...
Jonathan Levin's user avatar
1 vote
1 answer
259 views

How to change the pager for info command

On GNU/Linux is it possible to change the default pager for info command? I would like to use less as the pager (similar to man pages). I have customized less to use colors to make navigation of man ...
Amazigh_05's user avatar
1 vote
1 answer
543 views

Linux - Where to place manuals and docs for user binaries?

For applications installed via system package manager, binaries, man pages, and docs go in /usr/bin/, /usr/share/man/man<n>/, and /usr/share/doc/<app-name>/ respectively. For example: ...
cyqsimon's user avatar
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5 votes
1 answer
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Why through man page does not show the complete list of options and through -help yes?

I understood that man <command> is the manual page for any command. For man groupdel is possible see only two options: -h --help -R --root CHRROT_DIR Until here at a first glance one can assume ...
Manuel Jordan's user avatar
3 votes
1 answer
958 views

Installing man pages for section 9 (kernel routines)

I use kernel.org docs to read about kernel functions. Now I am trying to make possible reading manuals for kernel-mode functions, such as printk with man 9 printk. The section 9 is used for this ...
Vlad Havriuk's user avatar
2 votes
1 answer
280 views

Is there any good documentation on sysfs? [closed]

I'm looking for good documentation for sysfs; the man page is incomplete and even has one sentence that just stops half way through. I've found the Linux kernel documentation but that's a little bit ...
nohatsatthetable's user avatar
1 vote
1 answer
630 views

Offline Documentation of kernel.org

i wanted to find a website to download linux kernel documents offline in eother pdf or html or any kind but i dont know where to find and where to download any help would be appreciated the link i ...
EHSAN EAPXZ's user avatar
3 votes
1 answer
354 views

How to get apropos to show only executable programs/shell commands?

Most of the times when I use apropos I don't care about system calls, library calls etc — I'm just trying to find a command I forgot the name of. Is there a way to trim down the output of apropos to ...
mrzool's user avatar
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How to find descriptions for exit codes in Linux? [duplicate]

I'm looking for textual explanation of Linux exit codes (like 124 for timeout, 130 for SIGINT received, etc). I thought errno from moreutils does this but it seems it is for looking for error numbers? ...
Zeta.Investigator's user avatar
2 votes
1 answer
264 views

Where to get offline documentation/descriptions of individual sysctl kernel tunable parameters?

The NOTES section of $ man 5 sysctl.conf states: The description of individual parameters can be found in the kernel documentation. But is there a way for me to find this kernel documentation offline? ...
Jethro Cao's user avatar
2 votes
1 answer
320 views

What are the expansions of TUN and TAP acronyms?

Many VPN software use the TUN or TAP kernel driver to create a virtual network interface (mainly for Linux and FreeBSD systems). I know how they work and the differences, this is purely a ...
ocirocir's user avatar
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1 vote
2 answers
130 views

Where to Find Linux Kernel Driver Documentation by Filename

Simple, top level question (which, maddeningly has eluded my sorry level of Google-fu): Poking around in my (admittedly out of date) machine, I find the following file: /lib/modules/4.9.0-0.bpo.14-...
Digger's user avatar
  • 403
1 vote
1 answer
267 views

Error installing VirtualBox on Kali Linux following the Kali doc

https://stackexchange.com/users/9328287/telcom I found a very useful and meaningful answer of yours about this error: E: The repository 'http://download.virtualbox.org/virtualbox/debian n/a ...
xaeros's user avatar
  • 19
0 votes
3 answers
164 views

How and where to find out details on which directories and files a package effects?

In the context of adding capabilities to BaseX,I can see some information about a package: nicholas@mordor:~$ nicholas@mordor:~$ apt show basex Package: basex Version: 9.0.1+ds-1 Priority: optional ...
Nicholas Saunders's user avatar
3 votes
2 answers
3k views

What is the behaviour of a file-backed memory map when reading from or writing to an address larger than the length of the file?

I'm trying to figure out whether it would be undefined behaviour to open a memory map to a file with a very large length. My use-case is that I want to be able to see new data when the file is ...
Jack Fransham's user avatar
0 votes
2 answers
100 views

What is the intention of undocumented option "netserver -D"?

The netserver binary is often used for network performance profiling in conjunction with iperf3. In many contexts including other Stack Exchange questions, the method for launching netserver is shown ...
Rich's user avatar
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2 answers
52 views

Cheatsheat of all standard utilities [closed]

On a fresh installation pressing double tab prints Display all X possibilities? (y or n). X seems to always be above 1000, on my Arch it's 3003. So the do one thing and do it well philosophy. But how ...
Vorac's user avatar
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3 votes
1 answer
185 views

Are some apt long options undocumented?

I cannot find documentation on some long, double-dash options of apt, upon which I stumbled with Bash's tab-completion. $ apt install --<TAB><TAB> --allow-change-held-packages --fix-...
Quasímodo's user avatar
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2 votes
1 answer
3k views

Documentation for the meaning of entries in /proc/meminfo and /proc/vmstat

Where can I find documentation explaining the meaning of entries in /proc/meminfo and /proc/vmstat files? I looked up on the web and the man page of proc but could not find much. Many entries are self ...
Ketan's user avatar
  • 9,216
-1 votes
1 answer
957 views

wpa_cli action script example

I have been googling since morning about any wpa_cli actionscript example and the commands but can't any decent one. can someone help me with some info or link please? Thanks
ASI's user avatar
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1 vote
1 answer
100 views

Installing Read/Write locks documentation on Debian

I'm trying to write a program that uses read/write locks and would like to install the man pages for this type of lock. I already have installed the packages manpages-dev man-db glibc-doc Could you ...
tigre200's user avatar
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63 votes
4 answers
11k views

Where is the `--` (double dash) argument documented?

There are some utilities that accept a -- (double dash) as the signal for "end of options", required when a file name starts with a dash: $ echo "Hello World!" >-file $ cat -- -file Hello World! ...
user avatar
2 votes
1 answer
500 views

virsh "live" vs "current" domain

From the virsh manpage, under attach-interface: If --live is specified, affect a running domain.  If --config is specified, affect the next startup of a persistent domain.  If --current is ...
erp's user avatar
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3 votes
2 answers
9k views

How does the tftpd-hpa --verbosity option work?

I'm trying to set up a TFTP server using tftp-hpa, and according to the manpage I can use the --verbosity option to get more output. Unfortunately I can't find anything that explains what I should ...
Malvineous's user avatar
  • 6,813
8 votes
1 answer
785 views

Where is awklib?

I am working my way through GAWK: Effective AWK Programming: A User’s Guide for GNU Awk, Edition 5.0; March, 2019. I installed gawk using the following commands: sudo apt-get update sudo apt-get ...
Argent's user avatar
  • 209
0 votes
1 answer
170 views

How to read library documentation downloaded as a package (package-doc)

I am coding Qt GUI application for cryptography and want to use OpenSSL library calls for my application logic. Thats why i downloaded libssl-dev and libssl-doc packages via Synaptic package manager (...
Tomislav's user avatar
5 votes
1 answer
6k views

Where is the documentation for the IP variable in initramfs.conf?

Multiple sources, including this one, mention using the IP variable in initramfs.conf to set a static IP address in the pre-boot environment, and I have used this successfully in the past. However, ...
Mark Raymond's user avatar
0 votes
1 answer
228 views

missing documentation icinga2 installation on gentoo

I need install mariadb, apache2, php, icinga2 and icingaweb2 on gentoo. According to the documentation, I managed to install mariadb, apache2, (probably) php and icinga2 At the moment (according to ...
exo's user avatar
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