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  • What is a good program, with PostScript output (for LaTeX), to make circuit diagrams?

    - by Breakthrough
    Hello; I just found out to my dismay that Visio 2007 does not include the ability to output drawings in EPS/PS formats, which makes it unsuitable for my uses. I wish to create various circuit digrams (including some texts for resistor values, voltage sources, etc...) with most electronic components (resistors, logic gates). Visio was a great tool for this, but I need to include these in lab reports which I am typesetting with LaTeX. The recommended format to include images in LaTeX is PostScript, so the fonts can be properly substituted, and the drawings scale properly. So my question: Is there a Windows program which will allow me to create circuit diagrams, add various labels, and export it to PostScript format?

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  • What is the best IP/Subnet set up strategy for a multi-server webhosting setup?

    - by Roy Andre
    Sorry for the mixed-up title, but let me try to explain better: We run a hosting solution, which until now has supported shared hosting and VPSes. Easy enough. We are now getting larger clients which require a more complex setup. We have more or less settled the server-setup itself, which will consist of: 1-2 Frontend Proxy/Load balancing servers 2+ Application servers 1 Database server 1 optional Memcached server The issue we are dealing with is to agree on a flexible and easy-to-maintain IP setup. So far we've been into VLAN'ing the internal servers in its own subnet, we've though of assigning an official IP to each server, and so on. What will be the best approach here? Any best practices? Using one official IP on the Frontend server, and then just set up an internal subnet for the servers behind that? We could then just NAT in any eventual sources required to access for instance the DB server directly over 3306.

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  • Project specific help [closed]

    - by Sushant Jain
    Hi friends, I am in final year of engineering with Information Technology branch. I have to make my final year project based on Linux/UNIX platform. But until now i couldn't find any good project idea that will be useful for my future industrial career also. So please help me if you have any good project idea related to any field in Linux that gives us a leading edge in my career. and please suggest me sources that will be helpful to me in making that project. Thanks in advance.....

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  • error while installing binutils in LFS

    - by user53347
    lfs:/mnt/lfs/sources/binutils-build$ ../binutils-2.15.94.0.2.2/configure \ --target=$LFS_TGT --prefix=/tools \ --disable-nls --disable-werror loading cache ./config.cache checking host system type... i686-pc-linux-gnuoldld checking target system type... i686-lfs-linux-gnu checking build system type... i686-pc-linux-gnuoldld checking for a BSD compatible install... /usr/bin/install -c checking whether ln works... yes checking whether ln -s works... yes checking for gcc... no checking for cc... no configure: error: no acceptable cc found in $PATH

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  • debian dependencies (libssl-dev and libncurses5)

    - by RubyFreak
    I'm trying to install under RVM the Ruby Enterpise (REE) under debian My debian is squeeze (uname -r) 2.6.18-194.26.1.el5.028stab070.14xen i did try to install ree but it complains that it is missing libssl-dev and libreadline5-dev. I did update my lenny to squeeze, but i didn't update the kernel, since its a production server. The operational system is already updated and upgraded sources.list: deb http://ftp.de.debian.org/debian/ squeeze main contrib non-free deb-src http://ftp.de.debian.org/debian/ squeeze main contrib non-free deb http://security.debian.org/ squeeze/updates main deb-src http://security.debian.org/ squeeze/updates main I did try to install it using the following command: apt-get install libssl-dev libreadline5-dev But unfortunately i'm getting the following problems: The following packages have unmet dependencies: libreadline5-dev: Depends: libncurses5-dev but it is not going to be installed libssl-dev: Depends: libssl0.9.8 (= 0.9.8o-4squeeze1) but 0.9.8o-6 is to be installed E: Broken packages I was thinking to reinstall those packages and install again, but it has too many dependencies, and it is a production server, that i would like to know if there is any other way to fix it. Or at least to double check if it is necessary to reinstall both :-/

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  • Need to automount dvd or cdrom at fixed mount point in Ubuntu 11.04

    - by Lindsay Haisley
    Ubuntu 11.04, by default, automounts a cdrom or dvd at /media/<vol_name>. I need to make the automounting system use a fixed name instead of the volume name for all CDs or DVDs inserted into this particular drive, e.g. "/media/op-drive0". A bit of searching turns up pretty much the same solution I used, successfully, on an older, gentoo box, which is to create an fdi file for hal, along the lines of the instructions at https://bbs.archlinux.org/viewtopic.php?id=91450. This doesn't seem to work on this box. Other sources say to use the gnome-mount utility to set the mounting properties. Ubuntu 11.04 doesn't know about the gnome-mount program. Any ideas?

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  • switch OFF syn cookies

    - by Nick
    We have several servers they have public IP's, but work together (one is with Load Balancer, orther with Apache Web server, other with MySQL and so on. Most of the ports are fire-walled, so only "local" servers can be connect there. However ALL servers have some ports that must be publicly open. We have SYN Cookies enabled and from time to time we got: possible SYN flooding on port 8080. Sending cookies. Port 8080 is not public. How we can switch OFF SYN Cookies for some ports (e.g. 8080, 3306 etc) or from some sources (e.g. our servers), but in same time SYN Cookies to be switched ON for all other ports, e.g. port 80. We found this similar problem, except our servers are with public IP's: SYN cookies on internal machines

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  • Difference between “system-on-chip” and “CPU”

    - by Tim
    Very confused, in some websites, they have this line: iPhone 5s CPU: Apple A7 other websites saying that: iPhone 5s System-on-chip: Apple 7 CPU: 1.3 GHz 64bit dual core other sources saying that iPhone 5s System-on-chip: Apple 7 CPU: 1.3 GHz 64bit dual core Apple 7 In Wikipedia, it said: The Apple A7 is a 64-bit system on a chip (SoC) designed by Apple Inc. It first appeared in the iPhone 5S, which was introduced on September 10, 2013. Apple states that it is up to twice as fast and has up to twice the graphics power compared to its predecessor, the Apple A6. While not the first 64-bit ARM CPU, it is the first to ship in a consumer smartphone or tablet computer. There are 2 sentences: The Apple A7 is a 64-bit system on a chip (SoC) and While not the first 64-bit ARM CPU Wikipedia also said “The A7 features an Apple-designed 64-bit 1.3–1.4 GHz ARMv8-A dual-core CPU, called Cyclone”. So System on chip is also CPU? very confused

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  • Did bittorrent sync take advantage of multiple peers

    - by NachoChip
    I am currently testing BT sync, and really like it. However, I cannot find much of the technical detail regarding to how it works. I wonder did anyone know that is the program take advantage of multiple peers connection? For example, if I have a File A(FA), which exist in Computer 1 (C1) and Computer 2 (C2). If I set up a sync from C1 and C2 to a folder in Computer 3 (C3), will I get a better sync up time because I can get FA from 2 sources at the same time (of course, assume I have enough downstream)?

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  • How to configure installed Ruby and gems?

    - by NARKOZ
    Hi. My current gem env returns: RubyGems Environment: - RUBYGEMS VERSION: 1.3.6 - RUBY VERSION: 1.8.7 (2008-08-11 patchlevel 72) [x86_64-linux] - INSTALLATION DIRECTORY: /home/USERNAME/.gems - RUBYGEMS PREFIX: /home/narkoz - RUBY EXECUTABLE: /usr/bin/ruby1.8 - EXECUTABLE DIRECTORY: /home/USERNAME/.gems/bin - RUBYGEMS PLATFORMS: - ruby - x86_64-linux - GEM PATHS: - /home/USERNAME/.gems - /usr/lib/ruby/gems/1.8 - GEM CONFIGURATION: - :update_sources => true - :verbose => true - :benchmark => false - :backtrace => false - :bulk_threshold => 1000 - "gempath" => ["/home/USERNAME/.gems", "/usr/lib/ruby/gems/1.8"] - "gemhome" => "/home/USERNAME/.gems" - REMOTE SOURCES: - http://rubygems.org/ How can I change path /home/USERNAME/ to my own without uninstalling? OS: Debian Linux

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  • Setting up a software company...

    - by ThePower
    Hi all, I am a Software Engineer who wants to start developing and selling a range of products. I have some in depth ideas that I would like to go on to develop individually and sell under my own company name. Does anyone with any experience in this process have any information with regards to the route to take and process of setting things up so that I may be able to sell my applications? Also any information regarding copyrighting the material would be excellent. I am looking for the easiest way to set up a business that will allow me to have a name in which I can start selling applications to a variety of sources under. I didn't quite know which site to post this on so I hope it is relevant for superuser. Regards, Lloyd

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  • Pointcast Alternatives?

    - by kellyllek
    I used to love Pointcast in the early days of the internet; it was a screensaver that, like RSS feeds, brought in all your favorite sources with news articles and stock quotes along with various other info and turned it into a visually interesting screensaver. It was before broadband though and I heard so many work places had to ban it that the company eventually folded. But I wondered if there are any modern day equivalents? I certainly have feed readers and some awesome desktop gadgets that bring in various things like news and weather, and I don't want a whole screensaver like pointcast. But I wondered if anyone out there had other suggestions worth taking a look at; making some kind of feed display of interest, or some other way to turn favorite content into more animated desktop background, etc...

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  • Is it safe to use an IDE to SATA power adapter for an extended period of time?

    - by qwertymk
    I just bought a computer from HP and they failed to include SATA power connectors with the power supply other then the one HD and DVD drive. Meanwhile I have two IDE to SATA power adapters that came with my "USB 2.0 to SATA/IDE cable" http://www.amazon.com/USB-2-0-SATA-Cable-Adapter/dp/B001OORN06 3rd pic on the left. I was wondering if I would just open up my computer and use it to plug it my SATA drives to the IDE power sources and mount it to the motherboard, would it damage my drives in the long run or have any other significant effects. A friend told me he knows people who have had their HD burn out because of this

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  • Host a Debian repository on a Windows Web/Ftp server

    - by Dave
    At the risk of causing a matter vs. antimatter paradox that would end the world as we know it ... Is it possible to host a Debian repository on a Windows server? We have some applications which are available for Windows, Mac OS X, and Linux. Our web site, from where the application can be downloaded, is a Windows Server 2008 box running IIS 7. That is not going to change, and I would like to avoid having to purchase another server and/or domain. I would like to take advantage of the Debian packaging system so that I can just instruct users to add our repository to their software sources, and then they can install, get updates, resolve dependencies (some of which are not yet in the stable/main distributions of my target platforms), etc. The instructions I can find on the internet require linux-specific tools to create a local repository, but are unclear as to whether or not that can be copied to an FTP site as is, or if it requires some local daemons to be running or something.

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  • How to batch convert video files on OSX for AppleTV2 / iPhone4?

    - by Luke404
    I'd like to have a solution to batch convert video files to a format suitable for the AppleTV2, iPad2, iPhone4, while at the same time preserving as much quality as possible; I want a single output file that will play on both devices and also good for consumption by other Mac software (eg. Aperture, iMovie, iTunes). Batch processing is a requirement since I'm gonna convert many many files from different sources (mainly lots of videos captured by compact digital cameras, cell phones, and so on). I'm looking into ffmpeg and MEncoder (both installed via MacPorts), but I can't seem to find a suitable preset for libx264 even if everyone out there is talking about them. A different approach involving different software would be ok too as long as I can script it somehow and run it on a whole directory full of files to be converted.

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  • Nagios and rrd on a old server

    - by Pier
    I have an old server (P4 based) on which nagios (and all the other tools to monitor) is running. In the last few weeks we are seeing a strange behavior. In the /var/spool/pnp4nagios (where temporary files are stored before getting processed by pnp4nagios daemon) we have many files like perfdata.1274949941-PID-18839 and we get an error in npcd.log: [05-27-2010 11:17:46] NPCD: ThreadCounter 0/15 File is perfdata.1274951306-PID-27849 [05-27-2010 11:17:46] NPCD: File 'perfdata.1274951306-PID-27849' is an already in process PNP file. Leaving it untouched. Sometimes some graph are not drawn. The server is pretty loaded (around 5-6 normally) and i suspect that npcd goes in timeout and leave those files behind. What could I do (apart from change the server)? Few infos about the system: centos 5.5 nagios 3.2.1 pnp4nagios 0.6 (from sources) Thanks

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  • How to check the OS is running on bare metal and not in virtualized environment created by BIOS?

    - by Arkadi Shishlov
    Is there any software available as a Linux, *BSD, or Windows program or boot-image to check (or guess with good probability) the environment an operating system is loaded onto is genuine bare metal and not already virtualized? Given recent information from various sources, including supposed to be E.Snowden leaks, I'm curious about the security of my PC-s, even about those that don't have on-board BMC. How it could be possible and why? See for example Blue Pill, and a number of papers. With a little assistance from network card firmware, which is also loadable on popular card models, such hypervisor could easily spy on me resulting in PGP, Tor, etc. exercises futile.

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  • Is there a piece of software which lets you turn "anything" into a dynamic reorderable list?

    - by Robin Green
    I could write this myself, but I want to know if it already exists. Basically, it must fulfill these criteria: To reorder items, the user must never have to manually renumber them. That would be annoying, and it doesn't scale. Can read from a range of data sources (e.g. a database, a directory on the file system, a text file, another list) When the original data source changes, the list must automatically change with it (possibly with confirmation, e.g. if a list item would be deleted) Ability to persist the list ordering in some fashion Graphical display of list items (so that they can include e.g. images) Optional extras: Ability to modify data and write back to the data source (other than the ordering information)

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  • Is there a MySQL performance benchmark to measure the impact of utf8_unicode_ci versus utf8_general_ci?

    - by MiniQuark
    I read here and there that using the utf8_unicode_ci collation ensures a better treatment of unicode text (for example, it knowns how to expand characters such as 'œ' into 'oe' for searching and ordering) compared to the default utf8_general_ci which basically just strips diacritics. Unfortunately, both sources indicate that utf8_unicode_ci is slightly slower than utf8_general_ci. So my question is: what does "slightly slower" mean? Has anyone run benchmarks? Are we talking about a -0.01% performance impact or rather something like -25%? Thanks for your help.

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  • Debian - Can't stop MySQL; permissions?

    - by anon
    I just tried to upgrade from debian squeeze to unstable by replacing 'squeeze' with 'unstable' in /etc/apt/sources.list. The upgrade went smoothly except for mysql, which failed because it couldn't stop mysql. /etc/init.d/mysql stop simply returns that it failed, but if I try to get the status with /etc/init.d/mysql status it gives me this error: me@debian:~$ sudo /etc/init.d/mysql status /usr/bin/mysqladmin: connect to server at 'localhost' failed error: 'Access denied for user 'debian-sys-maint'@'localhost' (using password: YES)' . mysql is running fine, and I checked the permissions for debian-sys-maint in phpmyadmin and it's allowed to do everything, but only connect from 'localhost.'

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  • In Windows 8.1, how can I configure File History to backup *some* of my SkyDrive folders?

    - by Matthew
    I want File History to back up all of the folders in my SkyDrive except for the media folders (Music, Pictures, Videos, Podcasts). My media folders are "available online only", the rest of "available offline". Right now File History does not back up any of the content in my SkyDrive, and I can't seem to find a way to configure which folders it backs up. I found some sources that say if my SkyDrive is available offline, it will be added to File History. But I don't want to make my entire SkyDrive available offline, just the non-media folders.

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  • How to properly set CPU Units for OpenVz VEs

    - by gucki
    According to all the sources I read (openvz wiki, various mailinglists, forums, ..) the values of the cpuunits settings are relative to each other. So when all are equal and the system is busy, all receive the same cpu share. But something still puzzles me with that: why is there a tool "vzcpucheck" which shows "the power of the node/ host": Current CPU utilization: 18000 Power of the node: 880001 Why is there (do I need) an absolute number when all settings are only relative? Shouldn't those two settings result in exactly the same? ve1: 1 ve2: 1 ve3: 1 = 3 ve1: 293334 ve1: 293334 ve1: 293334 = 880001 (power of the node) What's the difference?

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  • Documenting software-updates semi-automatically in MacOS X by parsing log files?

    - by Martin
    I'd like to document changes I made to my computer (running MacOS 10.6.8) to be able to identify the sources of eventual problems. Mostly I install updates when a software notifies me about a newer version and offers me a dialog to download and install the update. Currently I'm documenting those updates "by hand" by noting in a text file, when I have e. g. installed a Flash-Player update or updated another 3rd party software ... I wonder if I could achieve that easier and semi-automatically by parsing system logfiles for certain texts like "install" and that way directly get the relevant information: what has been installed (Software and version) when has been installed where has it been installed/what has changed Is there a way to extract such information by a script from the existing logfiles?

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  • How to configure installed Ruby and gems?

    - by NARKOZ
    My current gem env returns: RubyGems Environment: - RUBYGEMS VERSION: 1.3.6 - RUBY VERSION: 1.8.7 (2008-08-11 patchlevel 72) [x86_64-linux] - INSTALLATION DIRECTORY: /home/USERNAME/.gems - RUBYGEMS PREFIX: /home/narkoz - RUBY EXECUTABLE: /usr/bin/ruby1.8 - EXECUTABLE DIRECTORY: /home/USERNAME/.gems/bin - RUBYGEMS PLATFORMS: - ruby - x86_64-linux - GEM PATHS: - /home/USERNAME/.gems - /usr/lib/ruby/gems/1.8 - GEM CONFIGURATION: - :update_sources => true - :verbose => true - :benchmark => false - :backtrace => false - :bulk_threshold => 1000 - "gempath" => ["/home/USERNAME/.gems", "/usr/lib/ruby/gems/1.8"] - "gemhome" => "/home/USERNAME/.gems" - REMOTE SOURCES: - http://rubygems.org/ How can I change path /home/USERNAME/ to my own without uninstalling? OS: Debian Linux

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  • Expertise Location [closed]

    - by Alexey Shatygin
    Is there some really working implementations of the expertise location systems exist? It is very hard to find anything about it. What sources to use, what to read, where to look? I've started with reading David W. McDonald's, Mark S. Ackerman's overview "Just talk to me" and now need just something more detailed. For those, who voting this question to be closed for off-topic: it is connected to IT sphere, if you don't know what it is - why ever vote? http://en.wikipedia.org/wiki/Expertise_finding http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.40.4654&rep=rep1&type=pdf

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