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  • libpcap packet size

    - by silverbandit91
    I'm working with libpcap in C on linux (centos) and I'm following this guide I want to simply print out the entire packet in ascii and i'v managed to get it working by casting it a u_char* in the "my_callback" function. But I can't figure out how to get the length of the data. strstr didn't work. the header has a len member that you can access to get the size but I can't find anything similar for the *packet being passed. Any help is appreciated.

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  • "tracing" version of readlink(1)

    - by jonrock
    I would like a version of "readlink -f" that provides a trace of every individual symlink resolution it performs. Something like: $ linktrace /usr/lib64/sendmail /usr/lib64 -> lib /usr/lib/sendmail -> ../sbin/sendmail /usr/sbin/sendmail $ I know I have used this utility in the past, on linux, and also remember at the time thinking "the name of this tool is completely unintuitive and I will forget it". Well, that day has arrived.

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  • install svn on redhat

    - by Adi
    how do I install svn on a Redhat machine? tried to do it with yum install svn - but it didn't find svn. my machine details is Red Hat Enterprise Linux Server release 5.2 (Tikanga) found it with this command /etc/redhat-release thanks

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  • Make HTML5 code look beautiful!

    - by blinry
    I'm looking for a command line program that pretty-prints (that is, indents, adds line breaks to, harmonizes the whitespace of) HTML5 code. It has to run under Linux (in case you're interested, I want to use it as an filter for nanoc). tidy does too much for me (heck, it alters my doctype!), vim too little. What do you use to make your HTML5 code look beautiful? Maybe there is a way to make tidy cooperate and not alter anything?

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  • Merge PDF's with PDFTK with Bookmarks?

    - by Jason
    Using pdftk to merge multiple pdf's is working well. However, any easy way to make a bookmark for each pdf merged? I don't see anything on the pdftk docs regarding this so I don't think it's possible with pdftk. All of our files merged will be 1 page, so wondering if there's any other utility that can add in bookmarks afterwards? Or another linux based pdf utility that will allow to merge while specifying a bookmark for each individual pdf.

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  • Software to Tune/Calibrate Properties for Heuristic Algorithms

    - by Karussell
    Today I read that there is a software called WinCalibra (scroll a bit down) which can take a text file with properties as input. This program can then optimize the input properties based on the output values of your algorithm. See this paper or the user documentation for more information (see link above; sadly doc is a zipped exe). Do you know other software which can do the same which runs under Linux? (preferable Open Source)

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  • what constitutes the name Kit?

    - by Ali Shafai
    I'm a bit confused with the "kit" thing. I'm a .Net guy moving toward linux and iPhone dev. I'm wondering if Kits are simply something like a dll you reference? or is it when you have a complete framework consisting of many parts? can I call NUnit "TestKit"?

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  • SVN server host os

    - by volody
    Recently I was searching on how to secure svn repository, or otherwords how to enable ssl connection to svn repository for a windows server 2003. Does it make more sense to use Linux server instead?

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  • module_layout version incompatibility

    - by Basilevs
    I try to insmod a linux kernel legacy module being ported by me. The following errors appear: > sudo insmod camac-mx.ko insmod: error inserting 'camac-mx.ko': -1 Invalid module format dmesg |tail -n 1 [1312783.938299] camac_mx: disagrees about version of symbol module_layout How do I fix this?

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  • hex dump of file in bash

    - by David Raswik
    How do I create a UNMODIFIED hex dump of a binary file in linux with bash? The od and hexdump commands both insert spaces in the dump, I DON'T WANT THIS, I need something that will simply write a long string with all the hex characters without inserting spaces or newlines in the output. How do I do this in bash?

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  • Client connections with epoll

    - by Andres Rodriguez
    Hi, I'm programming an application(client/server) in C++ for linux using epoll y pthreads but I don't know how to handle the connect() calls for attach a new connection in the descriptor list if a loop with epoll_wait() is running(Edge-triggered), How to can I do it?... I could to use a dummy file descriptor to trigger an event and scape of wait?, or a simple call to connect() could fire the event??... Sorry for my bad english...

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  • How to automatically add user account *and* password with a Bash script

    - by ModernCarpentry
    I need to have the ability to create user accounts on my Linux ( Fedora 10 ) and automatically assign a password via a bash script ( or otherwise, if need be ). It's easy to create the user via Bash eg: [whoever@server ]# /usr/sbin/useradd newuser But is it possible to assign a password in Bash, something functionally similar to this (but automated): [whoever@server ]# passwd newuser Changing password for user testpass. New UNIX password: Retype new UNIX password: passwd: all authentication tokens updated successfully. [whoever@server ]#

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  • Ruby script as service

    - by mplacona
    Well, the title say it all. I have a ruby script I want running as a service (one I can start and stop) on my Linux box. I was able to find how to do it on Windows here Some readings point to creating daemons or cron tasks. I just need something simple I can call on my box's reboot, and can stop/start whenever I please. my script has an internal sleep call, and runs in "eternal loop" thanks in advance

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  • Next generation of command shells?

    - by ignatius
    I am curious about if there is any project about a replacement for the current unix-shells (like bash, ash, rsh ...), at least adding some new ideas or paradigm in this area. I was searching but i found very few information, this project http://en.wikipedia.org/wiki/Friendly_interactive_shell seems interesting, but not so diferent from the nowadays solutions. What do you think? Do you imagine a linux-distribution on 2020 that still having bash? How can be an evolution of this programs? Br

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  • /usr/local or /opt ?

    - by SirFabel
    Hi Guys, How do you generally proceed for your package installations on Linux, for packages that are not part of your distrib's repos? On my side I am used to install in /opt. But since, I saw this doc on the Internet: http://www.pathname.com/fhs/. Now I am confused: apparently /usr/local would be also a possibility. What is the difference between both? Any best practices to share? Thanks SirFabel

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  • Extraneous Library Linkage

    - by gmatt
    I have a question which may be somewhat silly because I'm pretty sure I may know the answer already. Suppose you have static library A, and dynamic shared object library B and your program C under linux. Suppose that library A calls functions from library B and your program calls functions from library A. Now suppose that all functions that C calls in A make no use of functions in B. To compile C will it be enough to link just A and omit B and furthermore can your program C be run on a system without library B installed?

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  • Spell check in django template pages

    - by Hulk
    All, Is there any tool to do a UI spell check .I use a linux box here and also use django frame work. SO in the html pages if any spell check is to be made ignoring html tags and template tags.How should this be done. Thanks..

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  • Cracking WEP wireless networks [closed]

    - by John
    I have a problem.I am new to linux and would like to know how to crack a WEP and WAP wireless encrypted network.I have been typing the command "airmon-ng" i have even initialized the wlan0 with the following command on Backtrack 4 but it has failed,When I use airmon-ng command, it does not display my wireless driver.SomeOne please xplain to me from scratch.Would really appreciate it.

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  • Etiquette for adding repository during rpm/deb install

    - by Craig Peterson
    We're distributing a commercial application for Linux and we currently make it available for download as a .tar.gz, a .rpm, and a .deb. We're setting up both RPM and DEB repositories to make upgrading easier. Is it appropriate to add our repository to /etc/apt/sources.list or /etc/yum.repos.d automatically as part of the initial install? Are there any good reasons not to?

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  • Creating a custom device for Swing/AWT to draw to

    - by beta
    I am working on an embedded linux device that requires custom java code to draw to the screen. I was wondering if there was any way to create a custom adapter that can update the display based off our drawing code. I have done some digging and haven't found any information as to how Devices are implemented or plugged into Swing/AWT. Any information is greatly appreciated. Thanks.

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