man - format and display the on-line manual pages

learn more… | top users | synonyms

1
vote
0answers
52 views

problem while using “ yum groups ”

When i am trying to use yum groups commands in RHEL 7 it is giving me following output. #yum groups list There is no installed groups file. Maybe run: yum groups mark convert (see man yum) I have ...
0
votes
1answer
90 views

How to read the man page for a bash builtin? [duplicate]

So, I needed to figure out how "exec" works. However, doing man exec brings me to a 99% useless man page describing what bash builtins are. It of course also does this with many other man pages such ...
51
votes
8answers
4k views

How do I use man pages to learn how to use commands?

While researching another problem, I came across a command, locate something | xargs -I {} bash -c "if [ -d "{}" ]; then echo {}; fi" that I wanted to learn more about. So I ran man xargs and get ...
-1
votes
1answer
30 views

What's the meaning of (1) in the man page? [duplicate]

With man bc, I have a line starting with bc(1). bc(1) bc(1) NAME bc - An arbitrary precision calculator language Some of ...
244
votes
7answers
41k views

What do the numbers in a man page mean?

So, for example, when I type man ls I see LS(1). But if I type man apachectl I see APACHECTL(8) and if I type man cd I end up with cd(n). I'm wondering what the significance of the numbers in the ...
2
votes
1answer
74 views

How do I generate manpages using escape codes for bold, etc.?

While inspecting the source code of less, I noticed that the included manpage (less.man) used terminal escape codes for showing bold text: ^[[1mNAME^[[0m less - opposite of more ...
12
votes
2answers
864 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 ...
1
vote
2answers
48 views

How to control content of header in groff man macros

I'm using the groff man macros to produce general purpose documentation (not actually man pages) because they are easy to learn and use. I'd like control of the postscript page header as free text ...
0
votes
1answer
24 views

Get information on tools/packages that are not installed [closed]

How can I get information about packages I have not installed (other than a web search)? For example, imagine I am interested in iftop. If I do a web search I can find a wikipedia article and the man ...
3
votes
3answers
40 views

Submit an updated manpage

I found missing information in the manpage for scp when using IP6: there is no hint that you have to use slash masked brackets around the IP when using scp -6: scp -6 ...
3
votes
4answers
751 views

Find software package with greatest number of system manual pages

I want to output the name of the installed software package that owns the greatest number of system manual pages. Is there a command to do this?
2
votes
0answers
256 views

How to install man pages in CentOS 6.x minimal for all previously installed packages?

I ran into an issue to where man pages were missing from a CentOS 6.x minimal system (this is normal). I installed the man subsystem and then noticed the man pages were still missing for select ...
5
votes
4answers
1k views

Linux's man alternatives

Are there any alternatives to linux's man? I know many users used to man and for them it's useful and best way to find what they want, but i'm looking for something which is focused on examples. Is ...
2
votes
1answer
3k views

No manual entry for man

I'm working in a Centos 6.6 Docker image. I thought I installed everything to get access to man pages, but apparently not... $ yum install -y man man-pages man-pages-overrides [...] Complete! $ ...
4
votes
3answers
143 views

Use terminal-based documentation effectively (no web browser) [closed]

The problem I was trying to find shell scripting information without an Internet connection, i.e. via man page. Specifically, I was looking how to pass and use parameters. man bash does not contain ...
2
votes
1answer
212 views

Viewing Linux Programmer's Manual when multiple pages bear the same name

I want to view the read page of the Linux Programmer's Manual. When I type man read I get the read page of the General Commands Manual. Looking at the man --help I realized I could view all man pages ...
1
vote
1answer
56 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 ...
0
votes
0answers
23 views

Building man-db on android L

After finding that the version of man in Busybox Stericson doesn't print man pages at all on my Nexus 4, I decided to build man-db for android myself. So far, I've done: cd man-db-2.6.7.1 export ...
2
votes
1answer
41 views

what is the significance of the “7” in “man 7 regex”? [duplicate]

When I type man regex into a shell, this loads REGEX(3) Linux Programmer's Manual REGEX(3) ...
0
votes
1answer
591 views

Implicit declaration of strlcpy and strlcat even with “string.h” included

Gcc throws an error when I try to call the functions strlcpy or strlcat in a C file: error : implicit declaration of strlcpy error : implicit declaration of strlcat In what library can I find those ...
3
votes
1answer
44 views

Manpage typography and proper dashes

Should manpages avoid using unicode characters like the m-dash (—)? I've noticed most manpages use hyphens/minuses in their taglines where, I believe, an actual dash would have been more correct ...
10
votes
2answers
251 views

How to open grep(1p) manpage?

At the end of man grep, it says SEE ALSO\ POSIX Programmer's Manual Page grep(1p). I am not able to open the manpage grep(1p). How do I do that? Search net, Unix.SE and did trial and ...
0
votes
2answers
251 views

Where is the latest source code of man command for linux?

I'm looking for the latest source code of man command, the version in my Linux is pretty old(v1.6f), but I failed after googling a while. I mean the latest source code of man, not man-pages but the ...
1
vote
2answers
81 views

How to grep man pages for a word? [duplicate]

Recently I wanted to get info of struct timespec a field of lstat structure, but I couldn't get any. I tried $ man timespec $ man -k timespec timespec: nothing appropriate. After some time I went ...
0
votes
2answers
42 views

Is the mdoc macro set available on non-BSD systems by default?

Are the MDoc macros, commonly used to create BSD manpages, commonly available on non-BSD systems (such as Ubuntu and other GNU Linux distros)? Is it safe to design manpages using them when writing ...
1
vote
1answer
14 views

Simulating vim's scrolloff in manpages

The issue I have could be illustrated best with example: I know curl lets me do POST requests but I don't remember how. So I open man curl, and begin to search for POST. The problem is that every ...
0
votes
1answer
17 views

What is the recommended resource to refer to for syntax, usage and information about commands for an application?

What is the recommended resource to refer to for syntax, usage and information about commands for an application? I am currently trying to decide between command help (assuming that command has a ...
11
votes
3answers
3k views

Understand synopsis in manpage

I have not being able to understand the synopsis in manpage of a command. For example, let's see the manpage of man itself. By man man: SYNOPSIS man [-C file] [-d] [-D] ...
1
vote
2answers
55 views

Jump to specific flag in help/man file

Let's say I'm curious about what a specific flag -T means for a command ls? Is there a way to jump straight to that using man ls...? or, and this is a slightly different question because it's not ...
6
votes
5answers
5k views

How to copy multi-page text from the terminal into the clipboard?

I was viewing a man page for a software on my machine and I needed to copy-paste some of that text but the text was much more than one page. I'm aware I can direct the output to a file and use UI ...
0
votes
0answers
45 views

Man-pages don't include all relevant information

Consider the man-page of this function: sysconf It doesn't have all the information that I need (e.g. all the system variables to be queried). This is an example of what I need: ...
0
votes
0answers
19 views

Adapt text lines to fixed length [duplicate]

With the shell command fmt -w 30 myfile it is possible to truncate the myfile lines so that their length is at most 30 characters. The result is however not a justified file: some lines will be ...
13
votes
6answers
1k views

What does the name of the unix command apropos mean?

Apropos is a tool to search the headers of the man pages for a string. What does the name apropos mean?
2
votes
0answers
386 views

Install man pages in directory with update-alternatives

Using update-alternatives(8) on a Debian system it is possible to add man pages as slaves under some master alternative. For example, the following command installs an alternative man page tclsh.1 ...
2
votes
1answer
31 views

Why does using rev as your man pager fail when piping it through rev again?

I recently thought about a devious trick that involves setting the PAGER envionment variable to rev as a joke. When I tried reading the man page for rev with man rev I then saw the man page in reverse ...
1
vote
2answers
258 views

apropos regex start with?

I'm trying to use apropos so that I would look for all man pages starting with system. I try: apropos ^system apropos "^system" but these seem to return lines that don't start with system, but ...
2
votes
1answer
46 views

How do I match the beginning of a line in a manpage?

When I do man zshbuiltins I typically want to search for a command. Suppose I'm looking for info on the alias command. I get a chunk of text like: : [ arg ... ] This command does ...
2
votes
3answers
115 views

How to read this tcpdump man page?

I am trying to use the tcpdump command in a project and I have some difficulties understanding the help page. SYNOPSIS tcpdump [ -AbdDefhgHIJKlLnNoOpPqRStuUvxX ] [ -B buffer_size ] [ -c count ] ...
6
votes
3answers
514 views

Why is the manual for 'where' command not available

I recently came across the command where, which provides the actual path of executables in Linux. I was aware of which, whereis, locate and find, but not where. I want to know when this command got ...
1
vote
1answer
102 views

Using apropos command with -a to search multiple keywords on CentOS 7

I'm running CentOS 7.0 build 1503. I'm trying to search for commands I don't know the name of by searching the man descriptions for multiple keywords using AND (e.g. search for a command containing ...
0
votes
1answer
1k views

What is a Kernel Routine ?

In another answer I met a short overview of the sections of the man pages: commands for $-User system call, that means evoking a function from the Kernel library call, that means evoking a function ...
0
votes
2answers
82 views

How do you search ! in man sed?

You cannot search ! directly because it puts process behind. For instance, you cannot search ! in sed man. How can you search ! in man?
2
votes
2answers
82 views

universal help/man command: help builtin partial matches

I found a nice little script which iterates through a couple of manuals for a specific command. As a last resort, it will Google it and open a browser window. Source here: ...
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 ...
26
votes
2answers
38k views

What units of time does “top” use?

If I issue the "top" command and receive results such as: PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 00001 bob 25 0 77380 1212 1200 R 95.8 0.0 89122:13 fee ...
1
vote
1answer
79 views

man page search - how can I turn off the highlighting after matches found?

When using man pages, a commonly used feature is to use / then a search term to get to a word of interest. Once found, all matches remain highlighted - this can often be distracting when I just want ...
7
votes
4answers
2k views

Can I disable all man pages?

Specifically on a raspberry pi (running Raspbian Wheezy), but also in general, can I disable all man pages? This would mean no stored man pages, no "processing triggers for man-db", and so on and so ...
5
votes
1answer
101 views

What are the 'n', 'l', '3pm' sections of the manual for?

An excerpt from the man man page: The default action is to search in all of the available sections following a pre-defined order ("1 n l 8 3 2 3posix 3pm 3perl 5 4 9 6 7" by default) What are ...
1
vote
2answers
97 views

How to perform grep on 'man unix_command'?

Often while going through the output of man man awk I Need to perform grep, for e.g. in man awk, I need to find the definition of a particular flag, variable etc. Can anyone tell me, what would be ...
12
votes
4answers
10k views

what do I need to do with “man: can't set the locale; make sure $LC_* and $LANG are correct”

I typed man sudoers but got man: can't set the locale; make sure $LC_* and $LANG are correct No manual entry for sudoers What does this mean?