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Questions tagged [documentation]

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

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49 views

How to convert xqx files into actual text using a command like xqxdecode?

Let's say I have an XQX file (A printer stream file) that I got from LibreOffice Writer, how can I extract the text from that that file using xqxdecode? After reading the documentation for the ...
4
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5answers
2k views

Is grep documentation about ignoring case wrong, since it doesn't ignore case in filenames?

The man page for grep reads -i, --ignore-case Ignore case distinctions in both the PATTERN and the input files.  (-i is specified by POSIX.) However, if I change case on a filename, it won't ...
1
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1answer
39 views

Getting help on Bash's reserved words

Is there a way to get the information in this link (it's an index with all (?) the keywords) a and within the first level links in the command line with something like man or help?
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1answer
34 views

Accessing function documentation

Is there a way to access docstrings in Bash? How does one include a docstring in a function's definition in Bash? More specifically how do I add and access docstrings to the following function? ...
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0answers
34 views

Where to look for data type definitions?

Is there any reference material like man pages that informs on C datatypes? I thought this would give me something, but not: $ man size_t No manual entry for size_t $ man -k size_t size_t: nothing ...
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0answers
26 views

Where to find more infos about Xwayland command line options?

My gnome-session starts a Xwayland instance which I can find $> pgrep -a Xwayland 995 /usr/bin/Xwayland :0 -rootless -terminate -accessx -core -listen 4 -listen 5 -displayfd 6 which shows that ...
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1answer
28 views

Auto Refresh qpdfview

I am writing documents in latex that I compile to produce a pdf file opened with qpdfview (with the --unique option). Once compiled after a modification on the tex .document, I would like qpdfview to ...
0
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1answer
5 views

Why does the help for some applications open in Seamonkey composer?

I am running Linux in the form of openSuse Leap 15.0 with KDE Plasma 5.12.6 and have applied patches regularly. If I run some applications, for example Gimp (2.8.22), and ask for help, it starts ...
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2answers
116 views

Where is the official documentation (Debian package iproute-doc)?

Manpage of ss says: FILTER := [ state TCP-STATE ] [ EXPRESSION ] Please take a look at the official documentation (Debian package iproute-doc) for details regarding filters. What does that ...
5
votes
3answers
235 views

Is there any documentation for udev builtins?

The man page for udev mentions in several places that certain rules options can be used to invoke 'builtin' commands, which are apparently built in to the udev program itself. However, I haven't been ...
0
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2answers
137 views

What exactly does `ps -p PID` do that `ps -q PID` does not?

According to man ps: -p pidlist Select by PID. This selects the processes whose process ID numbers appear in pidlist. Identical to p and --pid. -q pidlist ...
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0answers
34 views

The standard mechanism to switch GPUs isn't undocumented, is it?

My laptop is a normal, uninteresting machine with two standard, unmultiplexed GPUs and an ordinary Debian stretch installation. The secondary GPU (a Radeon) is usually powered down but I can activate ...
1
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1answer
29 views

How can I view a cheatsheet/summary of a syntax construct of zsh in zsh itself? [closed]

I want something like the doc function in Clojure; I want to type cheat for and be shown some example usages of for in zsh. I don't mind installing an app for this, and I hope something like this has ...
16
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2answers
3k views

What does C@t{++} mean in the gdb man page?

I was reading the manpage for gdb and I came across the line: You can use GDB to debug programs written in C, C@t{++}, Fortran and Modula-2. The C@t{++} looks like a regex but I can't seem to decode ...
1
vote
1answer
59 views

'find' -perm example in doc

I was reading the official documentation of find online here. And I came across the following part (and I'm bolding the bolded part): ‘-perm -444 -perm /222 ! -perm /111’ Match files that are ...
0
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3answers
181 views

Reading Linux kernel documentation in terminal

Is there a way to read Linux Kernel documentation offline in the terminal? For exmple, I am reading this document online: https://www.kernel.org/doc/Documentation/cgroup-v1/cgroups.txt If I use Linux ...
1
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1answer
38 views

How to know if man pages are written in my language?

I know my language hindi is in my locale. I have tried to access the hindi man page using this command- man -Lhi man But it returns english man pages. So I want to find out how to know if man pages ...
2
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1answer
696 views

Some documentation for the “ext4-rsv-conver” process?

$ pgrep -a -f ext4-rsv-conver 153 ext4-rsv-conver 161 ext4-rsv-conver 7451 ext4-rsv-conver $ dpkg -S ext4-rsv-conver dpkg-query: no path found matching pattern *ext4-rsv-conver* Also I can't find ...
0
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1answer
67 views

Documentation about tmux TPM plugins

I'm wanting to build a TPM based plugin but the example provided is extremely minimal, doesn't explain how to do things (like creating commmands that can be used in the tmux status bar, or how to have ...
1
vote
1answer
220 views

Where is the “group-separator” option listed in the grep documentation?

My flavor of grep supports --group-separator and --no-group-separator but I only discovered this by googling how to solve a problem: https://stackoverflow.com/questions/2168065/how-do-i-get-rid-of-...
0
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1answer
71 views

Finding a man page with a standard C or POSIX type? [duplicate]

Is there a way to find a man page given a Standard-C-type or POSIX-type? Such as man size_t or man uintptr_t. This kind of thing can get confusing because uintptr_t is defined in stdint.h, and size_t ...
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1answer
166 views

What Debian/Ubuntu package has the documentation for the standard C headers?

On the back of this question, but Debian/Ubuntu specific that has C-standard library headers like (taken from Wikipedia) assert.h , complex.h , ctype.h , errno.h , fenv.h , float.h , inttypes.h , ...
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0answers
27 views

Looking up docs for C header files? [duplicate]

On Ubuntu if I type man 2 time I get, NAME time - get time in seconds SYNOPSIS #include <time.h> time_t time(time_t *tloc); ... I get that this works because time is the ...
2
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1answer
317 views

Is this considered an argument? [duplicate]

Some binaries in Unix-Linux systems like ping or mount have a long argument. For example if we write ping -h in the terminal, one of the options is: Usage: ping [-aAbBdDfhLnOqrRUvV64] Is this long ...
0
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1answer
61 views

Incomplete documentation for FreeBSD ipfw

When I see the official documentation of ipfw or the man pages it seems that it is sometimes incomplete. Specifically, there are a lot of options like, firewall_myservices firewall_allowservices ...
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0answers
60 views

Is there C language documentation on Linux? [duplicate]

Is there a package on Debian or some other Linux media that provides documentation for the C language? I mean in particular man pages. Eg. so that I can check docs for typedef or other basics (and ...
1
vote
0answers
237 views

Kernel man pages, make: *** No rule to make target 'installmandocs'

As a follow up to this question, How to make the kernel section 9 manpages which document functions, data structures, and headers?. I downloaded the kernel source code and in the source dir execute ...
1
vote
1answer
47 views

Where is official documentation about locking mechanisms for etckeeper, apt, and/or dpkg?

Context: Want to put a lock on etckeeper/apt hook activity during special backup. Objective is to preserve whole package integrity, e.g., wait until any package installation is complete, and then ...
1
vote
1answer
61 views

LibreOffice placeholder fields documentation

I have to modify a LibreOffice template with a number of conditional statements. I managed to figure out one can add such statements through Insert > Fields > More fields, tab Functions, type ...
1
vote
2answers
2k views

Is there documentation for /proc/net/netstat and /proc/net/snmp?

There is a long list of stats in /proc/net/netstat and /proc/net/snmp, both of which I think come from the net-tools project. Is there any official or unofficial documentation about these fields? Or ...
0
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1answer
29 views

The difference between Documentation Methods

I am confused about a three Documentation techniques used, I have The following questions concerning man , pinfo , /usr/share/doc Does the man command Display the same content like pinfo and just ...
0
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1answer
42 views

Where does bash's 'help' builtin source its documentation? [duplicate]

On MacOS, the default bash on the OS is 3.2. If I run help trap it says that if the signal_spec is DEBUG, that the command is run after each command, but the bash manpage says it is run before each ...
4
votes
2answers
5k views

Using ls command with symbolic links

I currently do not understand what is going on when I try to find the contents of or information for a symbolic link to a directory when using the ls command. I understand there is an option -H for ...
3
votes
3answers
82 views

How to access man pages as structured content

I'm building a resource that references man pages, and I'm wondering if anyone knows of a way to access man pages as structured data? My current approach is to do a lot if REGEXing, but this is ...
8
votes
2answers
2k views

Why there are no READMEs in the Linux filesystem hierarchy?

The Linux filesystem hierarchy (FHS) contains a lot of important directories. For example, I just discovered /sys/class/input while playing with my PS/2 keyboard settings. But all those important ...
1
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0answers
85 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 ...
12
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2answers
2k 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 ...
0
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1answer
239 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 ...
0
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1answer
341 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
votes
1answer
49 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
197 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:/...
2
votes
1answer
348 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 ...
1
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0answers
105 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
votes
0answers
230 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
207 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
673 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
votes
2answers
1k 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
202 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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votes
1answer
46 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 ...
0
votes
2answers
55 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 ...