Questions tagged [gnu]

GNU Project is a free software, mass collaboration project. The founding goal of the project was, in the words of its initial announcement, to develop "a sufficient body of free software [...] to get along without any software that is not free.

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egrep doesn't work as expected on SunOS system

Here is what I want to achieve on SunOS: Only pattern like [text_text=text], [text=text], [text] or text are valid patterns, where by text I mean anything in 0-9,a-z,A-Z, space, newline, tab, enter. ...
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Why does Gawk in compatibility mode split records in the same way as when GNU extensions are enabled?

I'm not sure if I found a bug in Gawk or if I'm misreading / missing something in gawk's man page. According to gawk's man page, when in compatibility mode, if RS contains multiple characters, only ...
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Why does GNU say it is “Not Unix”? [closed]

I use Fedora. Today I found GNU (on the web) about which I didn't know till yesterday. I knew that GNU is a Unix-like operating system that is free software but I didn't get why they say GNU's "Not ...
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How can I tell if GNU GSL is installed?

How can I find out if GNU Scientific Library is installed? OSX 10.11
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What is the name of an animal used as a logo by the GNU Project? [closed]

What is the name of an animal used as a logo by the GNU Project (gnu.org)? And why was this animal chosen to represent the project?
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Sed incremental arithmetic

I want to change a number at the end of a string by incrementing that number by one each time I run a specific sed line. The string looks like this: server-port=25555 I was thinking I could run ...
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1answer
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GNU sort --compress-program compressing only first temporary

I am sorting big files (>100Go), and to reduce time spent on disk writes, I am trying to use GNU sort's --compress-program parameter. (Related: How to sort big files?) However, it appears in certain ...
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3answers
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rm prompt when deleting unwritable files

This is about GNU rm. The info page says: Otherwise, if a file is unwritable, standard input is a terminal, and the -f or --force option is not given, or the -i or --interactive=always option is ...
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3answers
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Is Chromium OS a GNU/Linux distro?

Is Chromium OS is a GNU/Linux distribution or is it a non-GNU Linux-based operating system like Android, webOS or Syllable Server? Does Chromium OS use GNU C Library, GNU coreutils etc., or maybe it ...
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1answer
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Upgrade GNU parted 3.1 to 3.2

I'm trying to upgrade GNU parted 3.1 to 3.2 and when I try to verify the key it says : # gpg --verify parted-3.2.tar.xz.sig gpg: Signature made Mon 28 Jul 2014 11:20:50 PM EDT using RSA key ID ...
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What are the major contributions of GNU in the GNU/Linux OS?

I read in the GNU/Linux FAQ, that one of the reasons they are asking everyone to call the whole system GNU/Linux is: Principal & major contribution of GNU in developing the operating system. ...
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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/...
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jobs / wc: getting weird return values

I can't make sense of these return values. When I run jobs -s | wc -l, I get different results depending on what directory I'm in. If I'm in the directory that I returned to after suspending the job,...
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1answer
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What can be considered as operating system? [closed]

I am talking about GNU/Linux but not about GNU or Linux! I know that Kernel is the core component in operating system but I want to know what defines the "operating system" (What can be considered as ...
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1answer
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Why GNU find -execdir command behave differently than BSD find?

On my OSX, I've installed GNU find next to default BSD find via: brew install findutils. As far as I understand, BSD find is following POSIX standards and GNU makes it optional (as per this post), ...
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Is there a GNU/Linux equivalent to the Mac OS X open command? [duplicate]

In Mac OS X there is a handy open command that opens the target file or directory in the default GUI application meant for it: open /usr/local/share will bring up a Finder window with the /usr/local/...
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1answer
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Why does a '.' work in chown?

Why does GNU chown user.group work? The docs say nothing of the syntax being supported. Is there a juicy story behind it?
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Linux based operating system that has isolated software installations like in Android

Is there any linux based operating system for desktop that has software installation in single folder, like it does in Android (except the apps that need android/data or obb folder on external ...
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Permission denied when I try to run a program assembled with the GNU assembler

I was testing the GNU assembler using intermediate code generated by gcc. I don't really understand the GNU assembly syntax at all, though I could learn it at some point. I ran the command as hello....
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1answer
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Why do GNU tools use non-matching ` and ' to quote errors?

GNU tools often output error and warning messages with parts of the line (e.g. filenames, syntax errors, invalid dates, etc) quoted with non-matching quotes: ` and ' e.g. From the GNU coreutils FAQ: ...
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1answer
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How are GNU system utilities compatible with Linux?

According to GNU Hurd Architecture the GNU operating system was originally designed to be used with the GNU Hurd kernel which is a microkernel architecture. How is it that hobbyists were able to ...
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`set -e` and `grep` idiom for preventing premature exit from shell script when pattern not found

Help required - in the context of shell scripting on a GNU/LINUX bash: I always use set -e. Often, I would like to grep and do not always want the script to terminate execution if grep has an exit ...
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2answers
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Why does xargs -I imply -L 1

I've seen Why does 'find -exec cmd {} +' need to end in '{} +'? which explains why {} + has to be at the end of the -exec cmd(*), and now I'd like to know why GNU xargs reverts to one ...
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How to find how many windows are opened in GNU screen?

I am trying to automate my work flow. I have a script that opens individual window in screen for each IP in a list. Imagine setupscreen.sh <IP1> <IP2> .... After all windows are open, each ...
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2answers
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What are the alternatives to GNU ld?

I was curious if it's possible to build Linux kernel without GNU toolchain (gcc+autotools). I found out that it is possible: after applying patches from llvm.linuxfoundation.org, it was possible to ...
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2answers
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Where does the word GNU come from?

GNU is a Unix-like operating system. That means it is a collection of many programs: applications, libraries, developer tools, even games. The development of GNU, started in January 1984, is known ...
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5answers
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Is there a plain GNU/Linux OS?

I'm currently looking at all the different Linux distros and can't seem to find the original GNU/Linux OS. Apparently there is a GNU System which combined the GNU project with the Linux kernel. How do ...
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0answers
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How can I easily deal with differences between BSD and GNU sed? [duplicate]

BSD and GNU sed have some small differences in what arguments they accept. I just learned that I have to use different command lines when using -i: sed -i '' # BSD sed -i # GNU I solved this with ...
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1answer
573 views

'pkglibexecdir' is not a legitimate directory

I'm following some outdated instructions in an attempt to compile some proprietary, closed-source, unsupported, legacy code. Here is what a typical shell session looks like: $ autoreconf -fi src/...
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3answers
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Regex search for word roots with common prefixes

I recently had a curiosity about words in the dictionary that share both "pro-" and "con-" as a prefix. So, for example, procession/concession, produce/conduce, profess/confess, progress/congress, and ...
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1answer
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Cross compiling a software module

I'm trying to compile dropbear with the GNU ARM tool chain. I've went through this guide and managed to successfully build all the required tools. They are located in a directory: /home/tester/Misc/...
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Compile freedink couldn't find SDL2

I tried to compile GNU Freedink as described in the BUILD file but when I try to configure it couldn't find SDL2. Log: http://pastebin.com/GYHHa4T0
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To sed if with and without conditions correct

I know that I may have the C package #include <stdint.h> in the first 1-30 lines. I would like to add it to lines where no previously if the file contains the word LARGE_INTEGER by GNU tools. ...
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1answer
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Launch Win 7 from Grub Terminal?

I tried to install Ubuntu via Win 7 from my SD card where I used a program to mount the is file. I launched the installer from Windows and I asked the program to reboot and it launched Ubuntu from SD ...
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1answer
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cp options --no-clobber vs. --update

I want to copy a single file if (and only if) the destination does not exist. The source file changes rarely, maybe once a month. The destination almost never exists. Are there any differences ...
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1answer
1k views

direct GNU sort to use much memory and many cores

I have a fairly large text file (19Gb, half a billion lines) and a fairly large server on which to sort it (16 cores, 64Gb memory) running Ubuntu 12.04. What is the best way to use the command line ...
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How to prevent automake from overwriting INSTALL?

I'm working on a project that has a custom INSTALL file. Running automake --add-missing (or more precisely, autoreconf -i) will generate the GNU default INSTALL file, and overwrite our file with it. ...
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1answer
121 views

Where can I use 'beadm'?

I want to use beadm destroy but I don't know where can I type that command... Do I have to type it here or where?
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1answer
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How do I get a list of users that are not on the last command? (Not logged in recently)

I need a list of users that I cannot find by using the last command (i.e. they were not logged in recently). Would a temporary file be useful for this?
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1answer
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Will `mv` ever have the ability to create directories?

This question asks for the best way to create a directory when using mv if it doesn't exist. My question is why isn't this an inbuilt feature of mv? Is there some fundamental reason due to which this ...
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1answer
361 views

Can tar discover the archive format when piping it in via wget?

When I have a tar archive of any format, I can use: tar xf archive.tar.xz tar xf anotherarchive.tar.gz as tar discovers the relevant format by itself. Now I want to download the archives and ...
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What do the “features enabled” in GNU find mean?

When I use find --version with GNU find, I get something like this: find (GNU findutils) 4.5.9 [license text] Features enabled: D_TYPE O_NOFOLLOW(enabled) LEAF_OPTIMISATION FTS(FTS_CWDFD) CBO(...
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1answer
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What types of regex DO support (e.g.) negative lookbehind?

Bash on GNU: I am using a collection of find commands, most of which employ -regex to do their matching. Each time I try a different feature in my regex I have to cycle through the values for -...
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1answer
592 views

bash: What is the difference between these two script variants?

(Note: Both of these examples may require GNU or BSD find and may not work as-is with the POSIX "edition" of find). Both of the scriptlets below must be understood as excerpts from way more complex ...
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2answers
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gtags for cygwin

This might be a silly question, and hopefully it's not off-topic, but I can't figure out where else to ask. Is gtags available for cygwin? I'm using ctags but it'd be nice to have all the extra ...
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1answer
206 views

Portable wrappers for GNU, BSD, etc. versions of tools

Is there any script that provides a compatibility layer to a subset (a rich subset would be best of course) of BSD and GNU commands? As an example, possible cases handled could include: dd and its ...
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408 views

Scripting multi-volume (GNU) `tar` with pre-defined number of volumes

I've wrote me a little script to test (or extract) a very big multi-volume tar archive (note: created with GNU tar), each of which 00x.tar chunk will fit onto a standard DVD: #!/bin/bash d=$(dirname $...
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Why does GNU head/tail read the whole file? [duplicate]

I have a huge file and want to see its beginning and end. However, when I use head and tail, it apparently tries to read the whole file. Since the file is larger than a terabyte, this takes a very ...
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3answers
455 views

difference between gnu tar and tar package in fedora repositories

man page of tar in fedora (and also man page of tar on die.net) mentions the --acls and --xattrs and --selinux options but they are not mentioned in tar manual in GNU website Why? do this mean ...
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How similar are Linux and Unix exactly? [duplicate]

I am a computer science minor and I do appreciate *nix a lot more since i started to delve into computer science. I used to be a windows fan boy and now i own two macs (as well as my PC which has ...

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