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  • Getting more from an electricity monitor

    - by beakersoft
    Hi, I've recently got a free smart power electric energy monitor from my electric provider (npower, in the UK). While it is quite good i would like to pull the information from the monitor onto my home server, so i can get more detailed information and maybe graph it using mrtg or similar. Has anyone every tinkered about with them, how do the monitor and the display talk to each other (bluetooth/wifi) and any other info people might have. cheers Luke

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  • Firefox: substitute a font with another in any page

    - by kemp
    I'm using the stylish addon and it works great. However I would like to substitute a specific font - say Arial - with another of my choice every time it is found instead of setting a global font (which I don't like as I just want to substitute Arial) or using a stylish rule for every page. Is it possible to do this? Maybe with a greasemonkey script?

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  • debian gateway using iptables

    - by meijuh
    I am having problems setting up a debian gateway server. My goal: Having eth1 the WAN interface. Having eth0 the LAN interface. Allow both ports 22 (SSH) and 80 (HTTP) accessed from the outside world on the gateway (SSH and HTTP run on this server). What I did was the following: Create a file /etc/iptables.rules with contents: /etc/iptables.rules: *nat -A POSTROUTING -o eth1 -j MASQUERADE COMMIT *filter -A INPUT -i lo -j ACCEPT -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT -A INPUT -i eth1 -p tcp -m tcp --dport 22 -j ACCEPT -A INPUT -i eth1 -p tcp -m tcp --dport 80 -j ACCEPT -A INPUT -i eth1 -j DROP COMMIT edit /etc/network/interfaces as follows: /etc/network/interfaces: # The loopback network interface auto lo iface lo inet loopback pre-up iptables-restore < /etc/iptables.rules auto eth0 allow-hotplug eth0 iface eth0 inet dhcp #auto eth1 #allow-hotplug eth1 #iface eth1 inet dhcp allow-hotplug eth1 iface eth1 inet static address 217.119.224.51 netmask 255.255.255.248 gateway 217.119.224.49 dns-nameservers 217.119.226.67 217.119.226.68 Uncomment the rule net.ipv4.ip_forward=1 in /etc/sysctl.conf to allow packet forwarding. The static settings for eth1 such as the ip address I got from my router (which I want to replace); I simply copied these. I have a (windows) DNS + DHCP server on ip address 10.180.1.10, which assigns ip address 10.180.1.44 to eth0. What this server does is not really interesting it only maps domain names on our local network and assigns one static ip to the gateway. What works: on the gateway itself I can ping 8.8.8.8 and google.nl. So that is okey. What does not work: (1) Every machine connected to eth0 (indirectly via a switch) can not ping an ip or a domain. So I guess the gateway can not be found. (2) Also when I configure my linux machine (a laptop) to use a static ip 10.180.1.41, a mask and a gateway (10.180.1.44) I can not ping an ip or domain either. This means that maybe my iptables is incorrect of not loaded correctly. Or I maybe have to configure my DNS/DHCP on my windows machine. I have not reset the windows machine net, restart the DNS/DHCP services, should I do this? I did not install dnsmasq as desribed here: http://blog.noviantech.com/2010/12/22/debian-router-gateway-in-15-minutes/. I don't think this is necessary?

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  • Spam control via email?

    - by acidzombie24
    My site sends a confirmation email on sign up. There is also a captcha on the signup page. I was thinking... gmail, hotmail and maybe yahoo has captchas on their signup page? In that case should i ignore the captchas on my page since i know spambots cant use gmail/hotmail to confirm the email?

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  • Automatic start of Tomcat on server restart (Linux)

    - by Nick
    I have 4 Tomcat instances I wish to start when the server (Cent OS 2.6.9) restarts. After all other services have started I would like to start these up - but I am a bit worried about the load of starting all 4 at the same time, so maybe a short delay would be necessary. How should I go about this?

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  • where is trac.ini ?

    - by asksuperuser
    I have setup trac with dreamhost one-click install, I read doc it says config is in trac.ini but can't see any under trac dir so where is it ? I have no conf dir ONLY admin, db, htdocs, prefs, etc... Is this the right forum or should I ask on server maybe ?

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  • How to get the installed Memory Type

    - by balexandre
    Windows 7 could be better at this, it tells everything about the computer CPU but only the Memory amount Microsoft should add information about DDR type, speed and maybe CL as well. While this never happens, What's the best and easy way to check the installed memory so we can buy and upgrade it? I was thinking a simple software so I don't need to install the full SiSoft Sandra for example, just looking for something small, only for the memory part.

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  • Power management on Android -- is app CPU correlated to power usage? [closed]

    - by foampile
    2 questions: Is application CPU usage on Android correlated and how highly to battery usage? In other words, are apps that suck a lot of CPU also draining the battery or not necessarily? Is there a way to itemize and display the phone's power use by application, at any given point in time as well as within defined time buckets and maybe view charts and such? Sort of like a diagnostic monitor for power usage by application or system component? Thanks

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  • How to view pdf files on the Blackberry ?

    - by morpheous
    I recently purchased a blackberry bold - and was rather annoyed to find that I can't read my pdf files on it (unless I purchase something else [can't remember what] from RIM). Are there any free Blackberry apps out there that allow you to read pdf files (without having to connect to the internet)? Failing that, maybe someone can suggest (free) software I can use to change the pdf format to something that my Blackberry can view/read?

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  • iptables management tools for large scale environment

    - by womble
    The environment I'm operating in is a large-scale web hosting operation (several hundred servers under management, almost-all-public addressing, etc -- so anything that talks about managing ADSL links is unlikely to work well), and we're looking for something that will be comfortable managing both the core ruleset (around 12,000 entries in iptables at current count) plus the host-based rulesets we manage for customers. Our core router ruleset changes a few times a day, and the host-based rulesets would change maybe 50 times a month (across all the servers, so maybe one change per five servers per month). We're currently using filtergen (which is balls in general, and super-balls at our scale of operation), and I've used shorewall in the past at other jobs (which would be preferable to filtergen, but I figure there's got to be something out there that's better than that). The "musts" we've come up with for any replacement system are: Must generate a ruleset fairly quickly (a filtergen run on our ruleset takes 15-20 minutes; this is just insane) -- this is related to the next point: Must generate an iptables-restore style file and load that in one hit, not call iptables for every rule insert Must not take down the firewall for an extended period while the ruleset reloads (again, this is a consequence of the above point) Must support IPv6 (we aren't deploying anything new that isn't IPv6 compatible) Must be DFSG-free Must use plain-text configuration files (as we run everything through revision control, and using standard Unix text-manipulation tools are our SOP) Must support both RedHat and Debian (packaged preferred, but at the very least mustn't be overtly hostile to either distro's standards) Must support the ability to run arbitrary iptables commands to support features that aren't part of the system's "native language" Anything that doesn't meet all these criteria will not be considered. The following are our "nice to haves": Should support config file "fragments" (that is, you can drop a pile of files in a directory and say to the firewall "include everything in this directory in the ruleset"; we use configuration management extensively and would like to use this feature to provide service-specific rules automatically) Should support raw tables Should allow you to specify particular ICMP in both incoming packets and REJECT rules Should gracefully support hostnames that resolve to more than one IP address (we've been caught by this one a few times with filtergen; it's a rather royal pain in the butt) The more optional/weird iptables features that the tool supports (either natively or via existing or easily-writable plugins) the better. We use strange features of iptables now and then, and the more of those that "just work", the better for everyone.

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  • Kernel Log "TCP: Treason uncloaked!"

    - by hurikhan77
    On one linux server (Gentoo hardened), we are experiencing bursts of the following messages in dmesg from time to time: TCP: Treason uncloaked! Peer xx.xx.xxx.xxx:65039/80 shrinks window 4094157295:4094160199. Repaired. Is there anything we should take care of or is this normal? Update: Maybe related, we are using net.ipv4.tcp_congestion_control = cubic. Kernel version is 2.6.28 with Gentoo hardening patches.

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  • Can't connect to Gmail server via Mail.app in Mac OS X 10.6.3

    - by Johnny
    I've added my gmail account to Mail.app It worked find in previous days, and downloaded thousands of previous mails. But now, it can't connect to gmail server for days. What's the matter here? Here is my config in account setting: Account Type: Gmail IMAP Email Address: [email protected] Incoming Mail Server: imap.gmail.com User Name: [email protected] Password: xxxxxx And also, is there any means that I can view the transaction log of Mail.app? Maybe there I can find more information.

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  • how can I save the layout of my open apps on osx?

    - by fad
    I'd like to save the position and size of my open apps and restore them later (after restart). I found an applescript that does this with finder windows only: http://hubionmac.com/wordpress/2008/09/finder-fenster-position-und-layout-speichern/ (german) Maybe I could adept it, but I can't believe there's no application for this.

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  • How do I keep gnome-terminal width from changing when I use "reset"

    - by monguin
    When I use reset in gnome-terminal (bash, Ubuntu 9.04), the window width resets, though the height does not. On my personal computer, this does not happen in xterm or konsole. On my work computer (RHEL 5 or maybe 4), this does not happen in any terminals, including gnome-terminal. I assume there is some environment variable that controls this, but my .bashrc at work is hundreds of lines long, so I'm not sure where to look in there.

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  • Raid0 setup - What should 'my computer' say?

    - by superexsl
    Hey, I'm not a hardware person, so maybe someone here could help me. I ordered a PC from Dell that has "Serial ATA Raid 0 "Stripe"(7200RPM)Dual HDD" (2x500gb). However, I've just noticed that there's only one HD of 1TB (which is the default option when ordering). Should I be seeing two HDDs in "My Computer" or does the Raid0 setup simply improve performance rather than have (and display) two individual HDDs? How can I check if my computer does have a 'raid0' setup? Thanks

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  • Alternatives for load balancing Tomcat webapp?

    - by Mahriman
    We wish to enable some form of load balancing for a Tomcat webapp we're currently using today. Unfortunately, I know almost to nothing about Tomcat load balancing, clustering and so on. Can anyone share resources that cover the different alternatives, give some handy pointers (maybe some solutions work better in certain types of environment?) or just some tips on solutions to try out? We're currently running Tomcat 5.5 if that makes any difference in features, however no critical obstacles for upgrading to 6.

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  • Turn off error hiding on iis7

    - by Toby Allen
    I just installed IIS 7 on Vista, got PHP running, but I cant avoid the stupid default 500 error page if there is a problem with my php script, eg a compliation error etc. How do I set up IIS (or maybe php) to show me the error thats causing the 500 problem. Thanks

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  • cron job email customization

    - by user12145
    I have a list of cronjobs where some executes daily and others execute very 15 minutes. I do want to receive an email for the ones executed daily, but wants email disabled for the ones executing every 15 minutes(or maybe receive a daily email), is there a way to do this in crontab?

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  • Do all web caches understand the "Cache-Control" HTTP header?

    - by chris_l
    I'd like to avoid the "Expires" header, and use "Cache-Control" only - or maybe the other way around. The headers will account for a significant percentage of my traffic, so I'd prefer not to "use both". AFAIK, the "Cache-Control" header was standardized in HTTP 1.1, but are there still web caches/proxies in use, which don't understand it? Note: This could help answering a part of my stackoverflow (bounty) question

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  • How can I keep the code formated as original source when I paste them to vim?

    - by SpawnST
    When I copy some code from webpages and paste it to VIM,I find it becomes a mess style like a ladder as follows xxxxxx xxxxxx xxxxxx xxxxxxxxxx Since it messed so regularly so I think maybe there's something wrong with my .vimrc which is as below: set number set nocompatible set nowritebackup set noswapfile syntax on filetype indent on filetype plugin on filetype on set background=light set autoindent set smartindent set tabstop=4 set shiftwidth=4 set showmatch set guioptions=T set fileencodings=utf-8,prc set ruler set incsearch map gs :%s set t_Co=256 :colorscheme evening filetype plugin indent on Usually I write python in VIM.And help would be appreciated.

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  • How to show/hide layer by name in GIMP?

    - by parxier
    I received a pack of .psd files from a graphic designer that I need to use in the desktop app I'm developing. I managed to open those file in GIMP (I work on Ubuntu) The problem is that there are too many layers in there and it is very hard to navigate through them to get to the layer I'm interested in. Is there way in GIMP (or maybe plugin?) to show/hide layer by name and/or search for layer with specific name?

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  • How can I start an off PC remotely?

    - by serena
    I am using Team Viewer to control my PCs remotely. It lets me restart my PC, and this is a good feature. Is it possible to remotely start a PC which is already turned off? Maybe it's impossible but I like to ask Superusers. All I can think of is something like sending a signal to PC's BIOS. Assume that all components of PC is connected to electrical socket and the router is on.

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