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

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2answers
21 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 ...
2
votes
1answer
37 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: ...
0
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1answer
10 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 ...
2
votes
1answer
33 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
31 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
35 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
594 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?
38
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3answers
2k 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
35 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: ...
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2answers
53 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 ...
11
votes
1answer
164 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 ...
0
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0answers
87 views

avconv output_volume option - trying to understand the man page

I'm trying to increase the volume of my input .wav file by means of the output_volume option within the avconv command. I would like to increase the volume by 6 dBs similarly as demonstrated in the ...
2
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1answer
40 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
61 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
40 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/...
1
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0answers
69 views

Write my own sound card driver [closed]

I would like to write my own sound card driver, in order to use my output jack as a PWM (to control a motor). When I run "lspci", the sound card is : Audio device: Intel Corporation 5 Series/3400 ...
2
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0answers
46 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 ...
1
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0answers
151 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 ...
12
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2answers
865 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 ...
21
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1answer
568 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, ...
1
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1answer
59 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 ...
1
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2answers
47 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 ...
7
votes
1answer
202 views

Full list of tput options

I wanted to hide the cursor, and I was aware of tput command. I did search its man page. On searching the Internet, I found $ tput civis # to hide the cursor $ tput cnorm # to bring back the cursor ...
0
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2answers
143 views

Windows Internals for Linux [closed]

I've recently been reading Windows Internals version 6 (from Microsoft Press), and found it thoroughly enjoyable. I'm now using Kubuntu on my work machine, and as such have some desire to learn a bit ...
0
votes
1answer
97 views

How to do doxygen documentation?

My boss told me do documentation in doxygen and i am new to it. i did google and found you can do codes documentation in doxygen, but what about Details and text documentation which doesn't has codes. ...
16
votes
5answers
2k views

Where is the Programmer's manpage for the open C Function?

I am using debian8 (jessie) and I went to find read the manpage for open. instead I got a warning: $ man 3 open No manual entry for open in section 3 See 'man 7 undocumented' for help when manual ...
4
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1answer
559 views

What is udev “urbnum”?

When making a query to the udev system, one attribute that can show up is the urbnum ie: ATTRS{urbnum}=="538" I've looked through the documentation, but cannot find any mention of it. Are the ...
0
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1answer
36 views

What is docs package and how to use it?

There are some docs package in repository like: glib2-docs linux-docs php-docs python-docs What I can undestand form its name (docs) is it kind like documentation or something for the package. And ...
4
votes
4answers
2k views

How to search the whole manual pages on Linux?

Sometimes I need to look up certain words through all the manual pages. I am aware of apropos, but if I understand its manual right, it restricts search to the descriptions only. Each manual page ...
0
votes
2answers
63 views

Matching btrfs documentation for the version I have?

I want to see if the formatting details I specified are doing what I thought, and generally inspect things after a huge amount of copying to the btrfs file system. Looking through docs, I see btrfs ...
2
votes
2answers
886 views

Where can I find a list of USB error codes?

Every time I boot Debian, the boot log shows a bunch of xhci_hcd problems, and messages like usb 3-13: hub failed to enable device, error -22 usb 3-13: device descriptor read/8, error -61 I'm ...
0
votes
2answers
42 views

How to find documentation about macros in the manpages?

I've been working on a Routing Protocol and looking at legacy code for different routing protocols. I constantly find different macros where I it is very hard to find it in the header files because ...
5
votes
2answers
2k views

Is it safe to empty /usr/share/doc?

I don't need the man pages and documentations on my debian server. Is it save to empty that folder completely to free up some disk-space, by replacing all files in that folder with empty dummy files. ...
2
votes
1answer
262 views

In what section do descriptions of C data-structures go?

I read the following answer QA about what the various sections of the man-pages represent: What do the numbers in a man page mean? Upon reading it, I wasn't sure what section is for descriptions of C ...
2
votes
1answer
88 views

How to refresh file list in moc?

In moc (music on console), I want to refresh the file list, because I have renamed all files to lowercase and moc still shows uppercase for all files that begin with a number. The help command (h) ...
2
votes
3answers
65 views

Find command associated with configuration file

Let's say I didn't know what ~/.bashrc is for. Is there a command that would tell me what the file is/does? Other than googling for an answer. The man pages have a files section, maybe there is a way ...
1
vote
1answer
35 views

How do I specify command invocation for a mandatory short or long option?

I'm writing a specification for a tool that needs a -f / --foo option with a mandatory argument BAR, so for example these are valid calls: tool -f BAR tool --foo BAR How do I specify this syntax in ...
2
votes
2answers
680 views

What do square brackets in bash case statement mean?

http://ss64.com/bash/case.html SHOWS case word in [ [(] pattern [| pattern]...) command-list ;;]... esac What are square brackets indicating? Other websites omit them (i.e. no [[(] etc.) http://...
3
votes
1answer
264 views

How to create Info documentation?

How can I add man page entries for my own power tools? got me thinking: How would one create an Info page?
5
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2answers
799 views

How do I look up exit codes for applications?

I'm having difficulty locating a comprehensive up-to-date list of error codes from Bash. e.g.: $ udevadm info /dev/sdx; echo Exit code $? Unknown device, --name=, --path=, or absolute path in /dev/ ...
0
votes
3answers
2k views

In the command tar –cvjf foo.tbz a b c, what are a, b, and c?

I know these aren't extra flags to be passed to the tar command, aren't they just files names to be added to the archive?
2
votes
1answer
101 views

Where is using @ before a date string for seconds since the epoch documented?

GNU date and touch commands (and presumably others) use @date to define a date string as seconds since the epoch. For example: $ TZ=UTC date -d@10 Thu Jan 1 00:00:10 UTC 1970 I was answering a ...
1
vote
2answers
221 views

man pages: meaning of '2' in STAT(2)? [duplicate]

What's the significance of the number, like the 2 in STAT(2), seen in man pages? For example, man 2 stat yields a man page with STAT(2) at the top and a description that begins, The stat() function......
11
votes
1answer
7k views

Understand `compgen` builtin command

From help compgen: $ help compgen compgen: compgen [-abcdefgjksuv] [-o option] [-A action] [-G globpat] [-W wordlist] [-F function] [-C command] [-X filterpat] [-P prefix] [-S suffix] [word] ...
2
votes
1answer
37 views

Force installation of doc packages

I often find myself missing documentation when I happen to be offline. For this reason, I would like to force aptitude to install the corresponding doc packages whenever I install a package. Is there ...
1
vote
3answers
2k views

How to install/make the kernel section 9 manpages which document its functions and data structures?

The kernel sources contain functions and data structures which are documented, for instance in panic.c: /** * panic - halt the system * @fmt: The text string to print * * Display a message, ...
3
votes
3answers
310 views

Interactive command usage reference: do you generally have that on Unix?

The question of why some commands rely on manpages whereas others rely on something like the --help flag for providing command usage reference is not new. There is usually a difference in scope ...
4
votes
1answer
63 views

Is there a man section or other doc repository for data structure definitions?

For the millionth time or so I had to look in /usr/include/foo.h to find the members of a struct foo or foo_t or whatever. There's a man section for library and kernel calls, some of which include ...
4
votes
1answer
3k views

Where is the documentation for net.ipv4.conf.all.log_martians?

Where is the documentation for net.ipv4.conf.all.log_martians sysctl setting? There are man pages for various other TCP/IP/UDP (man 7 tcp, man 7 upd, man 7 ip) settings, but I cant find the net.ipv4....
3
votes
1answer
130 views

Reading Ubuntu installed magazines

I installed a digital edition of a magazine from the Ubuntu Software Center. But how do I read it? Is there an accessory tool to access it?