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

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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
votes
1answer
83 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
votes
1answer
26 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 ...
0
votes
2answers
39 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
3answers
118 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 ...
2
votes
1answer
135 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 ...
7
votes
3answers
783 views

viewing info documentation with vim

I'm trying to use the ManPageView addon to view info documentation within vim. Although I find ManPageView very useful for, well, viewing manpages, its info-reading functionality doesn't seem to work ...
0
votes
2answers
32 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 ...
3
votes
2answers
294 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
190 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
3answers
57 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 ...
2
votes
1answer
38 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) ...
0
votes
0answers
129 views

WiFislax documentation in English

Is there any User Guide or Documentation for WiFislax in English or Bulgarian. Or some YouTube channel or some tutorial in English.
3
votes
2answers
2k views

Where are the command-line options to perl documented?

On StackExchange I came across a command that looked like this: perl -pe ... Curious what the -pe options meant, I did man perl. This is the synopsis of that man page: perl [ -sTtuUWX ] [ ...
1
vote
1answer
25 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 ...
6
votes
2answers
669 views

Where can I find official POSIX and UNIX documentation?

I am looking for official documents on all POSIX standards and specifications. I would like to be able t read the docs to get a better understanding of UNIX systems and how they work at a low level. ...
5
votes
2answers
357 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/ ...
1
vote
2answers
403 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.) ...
26
votes
4answers
2k views

How can I add man page entries for my own power tools?

I have no idea about how I can make my home-grown specialist scripts (written mostly in Bash and Perl) available through the man pages. What procedure would I have to follow, and is there a ...
3
votes
1answer
62 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?
30
votes
19answers
8k views

Tricks and tips for finding information in man pages

Does anyone have any tricks and tips for finding information in man pages?
0
votes
0answers
18 views

Find out which arguments an application supports

I have iOS Simulator.app on Mac. Is there a way to find out what arguments can be passed to the app through the command line?
11
votes
3answers
5k views

Difference between help, info and man command

I know that these command will help to get syntax and options for commands but my question is that how they differ from each other?
0
votes
3answers
1k 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
57 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
137 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() ...
1
vote
3answers
741 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, ...
4
votes
1answer
2k 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
28 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 ...
10
votes
2answers
1k views

How to document my custom bash functions and aliases?

Problem: I have multiple bash functions and aliases. I can't remember all of them off the top of my head, so I usually end up opening my .bash_functions and .bash_aliases files to find what I need. ...
4
votes
3answers
3k views

Where is “showing the output of the 'ls' command vertically” documented?

I found out it's possible to show the output of the ls command vertically using the -1 switch: $ ls -1 But couldn't find it in the manual of ls. Is it a secret option?
3
votes
3answers
239 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 ...
12
votes
6answers
7k views

What are good online resources for learning shell scripting? [closed]

I am a beginner to shell scripting. I have not yet hardly coded a single program, but I am interested in learning it completely. Can anyone suggest some good online resources which will guide me?
3
votes
1answer
59 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 ...
2
votes
1answer
1k 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 ...
3
votes
1answer
125 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?
4
votes
1answer
74 views

POSIX usage standards for requiring at least one optional arg

So, I'm writing a CLI for an API, and I ran into a point where one of the commands support has two optional arguments, id and fields I want to know how to show that these arguments are optional, BUT, ...
0
votes
2answers
56 views

Where can I view a changelog for the sort command

I need to find sort's version when the -V flag was introduced. But I am finding myself some hard time finding the changelog for this command. Where can I view it?
2
votes
1answer
23 views

Correct way to document variable length options in man pages

Sometimes I see usage information like some_utility [arg [arg [...]]] or some_utility [arg[, arg[...]]] that indicates that you can pass more than one of the same argument. I've also seen it ...
3
votes
1answer
703 views

Where do I find ioctl EVIOCGRAB documented?

I want to use the ioctl EVIOCGRAB function in a C based program, and from googling around I have found various bits of example source code that use the function, but I am struggling to find explicit ...
3
votes
3answers
586 views

if/then/else man page

I would like to know if there is any man page documenting the construction of the most basic script commands like if/then/else, while, for each, and all the relative switches, like -eq, -e, -ge, and ...
0
votes
2answers
453 views

Where are netstat's -t and -u flags documented?

I use the following command to find open ports on my servers: $ netstat -ntulp I've probably found that on some random website over the years. However, I cannot find where -t or -u are documented. ...
0
votes
2answers
935 views

How do I get the list of exit codes (and/or return codes) and meaning for a command/utility?

Is there a way I can do what stated in the title from the terminal commands, or will I have to look into the codes?
17
votes
3answers
932 views

Documentation: Architecture of Linux Session

I'm looking for a good overview documentation describing the the stack of daemons and services involved in a modern Linux session. Although having read various documentation about dbus, and systemd ...
1
vote
1answer
71 views

Why there is no Linux Handbook?

Look e.g. onto the BSD's family: FreeBSD Handbook: http://www.freebsd.org/doc/en/books/developers-handbook/debugging.html OpenBSD FAQ, nearby FreeBSD's Handbook: ...
6
votes
1answer
151 views

List of error messages available for a command in Unix

Is it possible to find out what error messages a command includes? For example I want to see the list of error messages that mkfs.ext3 command will print in different error situations. Shall I look ...
2
votes
2answers
2k views

where does lspci gather its information from?

In kernel.org's documentation on proc I found "[The latest version of this document is available online". There I says: "… lspci is a synonym for cat /proc/pci". Which isn't the ...
3
votes
1answer
2k views

Where are the CentOS 6.4 documents?

I'm only able to find up to version 5 on CentOS.com: http://www.centos.org/docs/ Even though CentOS 6 was released back in mid-2011..
2
votes
3answers
98 views

Is there html documentation finder/searcher, like info utility for info files?

Many packages have their documentation in html. Is there some sort of man or info utility to find locally installed html documentation and work with it? I mean, I need a program which would ...
1
vote
3answers
147 views

Is there any manual about C in Linux? If any, what is it?

While I find that we can read some manuals about Library calls (C library functions) & acsii in Linux. But I still do not find any manual about C precedence order so far. So you can recommend ...