man - format and display the on-line manual pages

learn more… | top users | synonyms

1
vote
2answers
25 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 ...
4
votes
5answers
2k 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
35 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
16 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
316 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 ...
1
vote
1answer
17 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
98 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 ...
1
vote
1answer
33 views

Viewing Linux Programmer's Manual when mutiple pages bear 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 ...
2
votes
1answer
43 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
51 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
485 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
43 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 ...
8
votes
2answers
2k views

Find and install man file manually

I seem to be missing some man pages, notably gcc and g++. It doesn't help that I specify the section. whereis doesn't list man pages for those two, so I think they are simply not there. With Google I ...
0
votes
1answer
345 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
59 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
67 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 ...
16
votes
2answers
25k 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
40 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 ...
5
votes
4answers
1k 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 ...
4
votes
2answers
210 views

Man page quotation characters [duplicate]

I've just been looking through a few man pages for a few different commands including grep and ifconfig. I've noticed over a few pages, the content uses a strange syntax to notate what i think are ...
4
votes
1answer
58 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
71 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 ...
8
votes
4answers
7k 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?
2
votes
2answers
195 views

Archive of QNX's use messages?

Context I do not know all standard linux/unix commands, so I need manpages. I found QNX's manuals (invoked by "use [command name]") terse; I prefer them to linux manpages. I can get them from QNX ...
2
votes
2answers
69 views

Where are the details of 'Pathname Expansion' and 'Brace Expansion' in man page? [closed]

I was trying to go through a man page with a calm mind for the first time, and I hit a frustration already 2 minutes down the road. $ man set nocaseglob If set, bash matches ...
1
vote
1answer
112 views

NetBSD: /etc/man.conf man search path does not work

I've added a new man page directory /usr/local/share/man/man1b which contains files like e.g. troff.1b In /etc/man.conf I added _subdir ...some names... man1b _default ...
3
votes
1answer
32 views

Unwanted ctrl+h in file saved from man's output

After man less (and optionally hit h for "Summary of less commands"), since man uses less to display the text, I hit s to save the text to a file. When I open the file in emacs or vi, there are ...
3
votes
3answers
130 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
4answers
143 views

Is there a Linux graphics program that displays man commands in a browser?

Is there a Linux graphics program that displays man commands in a browser? I need a program that allows me to display all man commands in a browser, or in some graphics program, so that they can be ...
18
votes
7answers
868 views

Reading and searching long man pages

I finally got fed up when wanting to read about bash's read and it's -s option with man bash. I found the right spot eventually (around line 4500), but it was a frustrating as usual, since both /read ...
1
vote
2answers
51 views

What are unimplemented system calls?

I was revising Linux system calls. I found that a few calls are unimplemented system calls. For example: afs_syscall. I don't understand why they are included in man pages if they are not yet ...
48
votes
8answers
3k 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 ...
2
votes
1answer
58 views

Is there a pdf or text file for manpages of all commands/utilities? [closed]

Is there a single pdf or text file for manpages of all commands/utilities? I would like to add my comment to manpages which can be stored in my personal directory. Depending on availability, this ...
1
vote
0answers
28 views

Usage of ellipse in synopsis of command line argument

From http://pubs.opengroup.org/stage7tc1/basedefs/V1_chap12.html Ellipses ( "..." ) are used to denote that one or more occurrences of an operand are allowed. When an option or an operand ...
1
vote
0answers
151 views

Install man on FreeBSD 10.1 based pfsense 2.2

I'm running a pfsense 2.2 router. While not required most of the time, sometimes using the console is the way to go. Unfortunately pfsense doesn't come with /usr/bin/man I was able to run pkg pkg ...
0
votes
0answers
15 views

using man command for a system call close [duplicate]

So if we have an executable program called close on linux, and theres also a system call close. How can i generate a command that makes sure i get the manual for the system call "close" rather than ...
9
votes
3answers
213 views

Can I force `man` to do lower case sensitive matching?

When I search man pages, the search is case sensitive, but only with regard to upper case letters. E.g., x will match x and X whereas X only matches x. This is the man-db version of man, used on ...
4
votes
5answers
300 views

Showing all pages at once with man command [duplicate]

Say if I run the command man who, I have to keep pressing space or enter to show all content. Is there a way to show all of the content at once?
32
votes
3answers
6k views

Colors in Man Pages

When I look at a man page in my 'console' (not an xterm) I see some coloration, but I don't get this in my xterm's (e.g. konsole) is there any way I can enable this? hopefully a fairly simple ...
3
votes
0answers
47 views

Convention/standard on using curly braces around options

Man page for tar in arch linux SYNOPSIS section starts with: tar {A|c|d|r|t|u|x}[GnSkUWOmpsMBiajJzZhPlRvwo] [ARG...] I perfectly understand that in this situation it means that exactly one of them ...
51
votes
7answers
7k views

How to follow links in linux man pages?

Is there a way to follow the links mentioned in a man page? For example, here's the man page for ps; how do I access the link marked in red?
0
votes
1answer
19 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 ...
-4
votes
4answers
218 views

How can I `man print`?

Where can I find more information about the command(?) print since I don't receive a result when I input man print? For example, in the zsh I can do the following: $ print "Hello, world\!" Hello, ...
1
vote
0answers
58 views

Why doesn't manpage show the available options?

When I open a manual in bash in Linux Mint 17.1, e.g. man man, the available options are not shown. Why is that and how do I fix it?
23
votes
1answer
818 views

What is the deal with mandb and stray cats?

The man page for mandb refers to stray cats: -s, --no-straycats Do not spend time looking for or adding information to the databases regarding stray cats. There is no ...
4
votes
4answers
231 views

Viewing man pages with scroll wheel support

I'd like to use the scroll wheel (xterm mouse escape codes) to scroll through man pages, like I can in emacs with xterm-mouse-mode. less doesn't seem to have support for that and short of recompiling ...
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 ...
29
votes
4answers
3k views

What is GNU Info for?

I understand what GNU Info is and how to use it, but what is it for? Why does it exist in parallel to the man pages? Why not write detailed man pages rather than provide a separate utility?