Questions tagged [documentation]

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

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116 views

What is an up-to-date equivalent of LARTC How-To?

The Linux Advanced Routing and Traffic Control How-To was a guide on configuring things like the quality of service modules, iptables, multicasting and IPv6. Since work stopped on it, Linux has ...
18
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2answers
4k views

cp behaves weirdly when . (dot) or .. (dot dot) are the source directory

This answer reveals that one can copy all files - including hidden ones - from directory src into directory dest like so: mkdir dest cp -r src/. dest There is no explanation in the answer or its ...
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1answer
313 views

Where to obtain the uidgid file

I was reading /etc/bashrc and saw the following: # By default, we want umask to get set. This sets it for non-login shell. # Current threshold for system reserved uid/gids is 200 # You could check ...
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1answer
544 views

Why does the fs.inode-max kernel tunable not exist on version 2.6 of the Linux kernel?

The following output (from a Vagrant VM running CentOS 6.6) mostly speaks for itself: [root@localhost ~]# echo 131072 > /proc/sys/fs/inode-max -bash: /proc/sys/fs/inode-max: No such file or ...
3
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1answer
60 views

Is there any offline manuals for special characters used in terminal?

We can find help regarding most commands like echo ,cp, mv, wget using man . But can I find manuals for special characters used for operations like piping(| symbol)? If there's none, is there any ...
0
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2answers
204 views

Is there some manual for commands provided by Debian?

By man which, I found that which is a shell script provided by Debian. Does Debian put the usages of all the provided commands in some documents? similar to the manual of coreutils? I checked https:/...
3
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1answer
581 views

KDevelop 5.x documentation for Find-Replace in Files

I'm trying to search and replace in files using regular expressions by using the "Find-Replace In Files" dialog of KDevelop 5.x. Where can I find the documentation for this? The user interface for ...
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0answers
161 views

How to find out which kernel module supports particular hardware

One of my customer asked me question about providing them driver for RAID controller card in the server. It seems that server vendor only provides firmware for the controller but no driver. Also ...
2
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0answers
355 views

lshw tool and returned options and their meanings

The tool lshw reports information about all connected hardware. Some reported options and features are simple enough to understand, while others are not. The documentation page found here and the ...
0
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2answers
286 views

Learning from Unix Programming Environment

I've got the Unix Programming Environment book by Kernighan & Pike, copyright 1984. The book says that you need the Unix programmer's manual while reading the book. The preface of the Unix ...
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1answer
1k views

Read standard library header file in terminal [closed]

is there any way to read a standard header file, say float.h , in terminal ? Sometimes it would be nice to know what are the names of some values, say max value of float or something like that.
3
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2answers
3k views

Why is 'init 6' the reboot command? (historic reasons)

I would like to know why 6 is the number/code/signal associated with the reboot command in "init 6". I mean the history/stories/legend reasons, not in a technical way... If it was a "list related ...
7
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1answer
254 views

Access ImageMagick's man page

On my system I have ImageMagick and its documentation installed: $ apt-cache pkgnames imagemagick imagemagick imagemagick-6.q16 imagemagick-dbg imagemagick-doc imagemagick-common I can access ...
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1answer
50 views

meaning of some commands ? , the hackers play book 2 [closed]

i don't understand what's the meaning of the -a in dpkg --configure -a and what's the meaning of the -y is apt -y install ? , i always find-letters that i never understand what's there meaning , can ...
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2answers
63 views

Traverse & Convert HTML based documentation directory to either TEXT or PDF

Documentation for a standard system package is contained in: /usr/share/doc/rsyslog-5.8.10 (distros: RHEL 6/Centos 6) however it is all *.html. I'd like to traverse all the files in the proper ...
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1answer
346 views

How do names in the dircolors database map to those in LS_COLORS?

From dircolors -p, some types seem to have names: #NORMAL 00 # no color code at all #FILE 00 # regular file: use no color at all RESET 0 # reset to "normal" color DIR 01;34 # directory LINK 01;36 # ...
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2answers
2k views

Reinstall man pages & fix man

So in a recent fit of folly, I followed the instructions in this answer on the Ubuntu SE page since I wanted to remove most of the documentation. However, I didn't read the commands well enough and ...
3
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1answer
491 views

Linux command line tool to find specific programs

Can you please indicate me how do you find programs in the terminal without knowing the exact name? As far as I remember, there was a command line tool that helps the user to find out other programs /...
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2answers
62 views

Is there a unix scripting file checking Key?

Is there a key that explains theese letters such as -n, -d, etc all mean ? Example: if [[ -d ${directory_name} ]]; then ...; fi What is the -d or where do I find a key? Example: while [[ -n ${...
4
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4answers
668 views

On Line Man Pages from Terminal

With the risk of raising a question that might already have an answer, i would like to ask if anybody knows if and how is it possible to read man pages in my terminal for programs/apps that are not ...
2
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1answer
41 views

How can I review some release notes?

Two days ago I upgraded several packages. I remember reading something important after the packages were downloaded and before they were installed, but only now I think any action is necessary. ...
0
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1answer
58 views

why is apt docs is missing? how to get it back?

I'm reading the man page of apt and at the "see also" section it says: SEE ALSO apt-get(8), apt-cache(8), sources.list(5), apt.conf(5), apt- config(8), The APT User's guide in /usr/...
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4answers
333 views

Getting started with “man”: a few questions [duplicate]

I'm having problems with man: How can I display sections of a man-page? How can I figure out what sections a man page offers? According to man man -S is the parameter I need to get a list of "...
0
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2answers
63 views

How can I add a dot after a bold word in a manual?

What is the proper syntax for adding a dot that is not bold after a word in bold? I need to write the following sentense without the dot in bold word_in_bold. Other sentence But .B word_in_bold ...
1
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1answer
303 views

Debian Cinnamon vs Mint Cinnamon documentation

I want to better understand how to customize and use Debian Cinnamon. 1) Should I be using the Mint Cinnamon documentation, forums, and the like for my Debian Cinnamon, or is there a better source ...
0
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2answers
123 views

What do the options after a specific command mean?

How do I understand what the various options/flags mean? For example: 1) uname -a - What does -a denote here? 2) pyang -f - What does -f denote here? I just want to understand if there is some ...
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2answers
51 views

Heuristics for making use of or dismissing old documentation [closed]

Getting them as search results or following reference links, I often come across documentation produced some time ago. A few months, a few years. Sometimes the documents are marked as deprecated or ...
4
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1answer
186 views

How and what style should I use when writing man pages? [closed]

My problem is, after a project nearing completion, it's time to focus on things like documentation, one of which is the man page. Now, people may or may not dislike man pages, but it's pretty much ...
2
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2answers
5k views

Where can I find Centos 7 documentation? [closed]

Where can I find CentOS 7 documentation like this one? https://www.centos.org/docs/5/html/5.1/Deployment_Guide/index.html https://www.centos.org/docs/5/html/5.1/Deployment_Guide/sec-sel-enable-...
2
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1answer
128 views

What command(s) can I use in a terminal to find a program that does a particular thing? [duplicate]

I often find myself alt-tabbing to google "How to do X in Linux". Is there a way to search (say, man pages) in Linux to find tools that might be of use in a particular situation? For example, ...
1
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2answers
312 views

How can I learn the purpose of the various kernel processes?

(Related: What do the brackets around processes mean?) I'd like to really understand what I'm looking at better. I'd rather not need to dig through actual kernel source code just for a quick ...
8
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1answer
2k views

Why can't I fetch the gcc-doc package on Debian?

When I was testing some code snippets from Stack Overflow, I realized that I haven't any man-pages for GCC on my Debian System. But when I try to get them from Debian's repositories it outputs E: ...
2
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1answer
449 views

Comprehensive documentation of wpa_supplicant.conf with description of all parameters and default values

I there any up to date, comprehensive documentation of wpa_supplicant which describes all possible parameters of wpa_supplicant.conf and it's default values. The man page of wpa_supplicant.conf ...
13
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1answer
2k views

How can I get a help message for zsh builtin's?

If I want to get a brief usage message for a bash builtin, I can use help <builtin> at a command prompt, e.g. $ help export export: export [-fn] [name[=value] ...] or export -p Set export ...
1
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1answer
361 views

What is the difference between man and --help? [duplicate]

I used both command lines and displayed the same output
0
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2answers
126 views

Centralized system information

Does anyone know of a software capable of keeping track of Linux/UNIX systems configurations centralized on a server? Possibly with a web GUI and history capabilities? I am looking for something that ...
3
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1answer
727 views

Where can I find detailed documentation on Linux signals?

When we do kill -l we get a list of all the signals that are supported, but is there any man page that describes each signal in detail?
46
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3answers
4k views

Purpose of “ASCII text, with overstriking” file format

After downloading the source code for Bash, I was browsing through the doc directory and came across the following files: bash.1 is a regular troff file used to build the man page. bash.0 is like a ...
0
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3answers
116 views

How to get help for bash variables use from a command line?

Bash has some special or predefined variables, such as $? and $#. How to know the meaning of those variables use build in command instead of searching online web pages? I have try to use this: ...
1
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2answers
659 views

Where is the hash command documentation?

When I type man hash it shows me man builtin. I'm trying to understand this line: hash -r 2>/dev/null || true What hash -r does and what it returns. Context: export PATH="$PWD/bin:$PATH" hash -...
18
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1answer
2k views

Why is the circumflex/caret character used as a symbol for Ctrl?

I started using the Linux console a long time ago but I never questioned myself about the circumflex aka caret character (^). I'd like to ask why it's used as a replacement for the word Ctrl. I ...
10
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1answer
4k views

Where is wpa-conf documented?

I use wpa-conf in /etc/network/interfaces to make the WLAN interface automatically connect to the AP: # This file describes the network interfaces available on your system # and how to activate them. ...
1
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2answers
290 views

How are GNU documents in PDF formats created?

Some GNU software doesn't offer PDF files for its manual, e.g. http://www.gnu.org/software/findutils/manual/find.html Some does, and their PDF files have bookmarks/outlines, e.g. https://www.gnu.org/...
2
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2answers
122 views

Reference manuals for network configuration on Fedora/CentOS/RHEL?

Every time I need to configure a network interface on Fedora/CentOS/RHEL I need to access its online documentation to check which configs and values I should use in the /etc/sysconfig/network-scripts/...
2
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0answers
83 views

Look up documentation on C types?

I'm reading over documentation on concurrency in C and trying to learn how to do things concurrently. As I'm reading, I'm coming across types I've never come across before like tss_t, etc. Is there ...
2
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0answers
1k views

How do I convert the complete AMD64 Gentoo Handbook into a PDF from the command-line?

I have been writing shell scripts for converting the AMD64 Handbook of Gentoo Linux to PDF and this is my current shell script: function ghand { # Input 1 is the architecture # Input 2 is the ...
11
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2answers
981 views

What is the “2001 article” for blocking “automated retrieval programs” referred to by the wget man page?

The wget man page states this, under the section for the --random-wait parameter: Some web sites may perform log analysis to identify retrieval programs such as Wget by looking for ...
24
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1answer
1k views

Is there any manual page for colored shell output?

You know, that colorized output made by special char sequences, for example: echo -e "\e[34m Hello\n \e[0m" This will produce word "Hello" colored in blue. To do this I had to search on the web, and ...
1
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1answer
198 views

`man` pages for languages other than C (e.g, python, R, javascript, etc)?

man pages are a phenomenal resource while programming in C on Linux. While looking at someone else's code, if you see something foreign you can immediate research it in another terminal with $ man 3 ...
2
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2answers
6k views

Is there a standard way of locating a package's config files?

Just curious if there is a standard way of locating where a package puts the config files for a program (assuming the documentation for the package doesn't include this information). The reason way I ...