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• FFMPEG Install on EC2 - Amazon Linux

  - by Oliver Holmberg

  Hello Serverfault friends, I am about two days into attempting to install FFMPEG with dependencies on an AWS EC2 instance running the Amazon Linux AMI. I've installed FFMPEG on Ubuntu and Fedora systems with no problems in the past, and have read reportedly successful instructions on installing on Red Hat/Fedora. I have followed a number of tutorials and forum articles to do so, but have had no luck yet. As far as I can tell, the main problems are as followed: The amazon linux (Most similar to red-hat/centos) yum repositories don't have ffmpeg available. I have found instructions to update the repositories to include the required packages, but adding these repositories cause yum to fail in updating packages. (Also, I've read some cautionary tales about adding redhat/centos repositories to amazon linux that lead me to believe it may be a bad idea) (https://forums.aws.amazon.com/thread.jspa?messageID=229166) I have tried a more complicated method of downloading the source tarball, compiling, and installing, but this always fails due to missing dependencies and other errors. On to my question: Has anyone successfully installed FFMPEG on Amazon Linux? Is there a fundamental incompatibility? If anyone could share specific instructions on installing ffmpeg on amazon linux I would be greatly appreciative. Any other insights/experiences would also be appreciated. Thanks in advance, Oliver

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• How to run a command as admin in MSDos?

  - by tech

  I want to run a dos command in dos prompt, but this dos command is only executed using admin right. So, I can right click the command prompt to run as administrator, but I wanna to run one line of dos command using the admin right, can I run dos command in dos prompt like sudo in DOS cmd? thz u.

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• How to make Notepad++ take over from the standard notepad.exe

  - by Nick

  I could do this easily with TextPad, then I got irritated with Textpad once I'd played with Notepad++. Now that I've removed Textpad: I want Notepad++ to take over the right-click Edit option in Explorer, and I want Notepad++ to come up when I type notepad in the command prompt. I know that Notepad++ has a shell extension that allows one to do right-click Edit in Notepad++. But my old right-click Edit link remains, and I keep finding myself clicking on it, only to be rewarded with an error.

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• Where / how does Apache generate the HTML code used in the default directory listing?

  - by Ellen B

  I am looking to modify the HTML that apache generates for its default directory listing. I already know how to create a HEADER.html file that gets included for every directory listing. I am attempting to change the actual html that Apache generates for the file listing itself; right now my MacOS apache generates this for example: <table><tr><th><img src="/icons/blank.gif" alt="[ICO]"></th><th><a href="?C=N;O=D">Name</a></th><th><a href="?C=M;O=A">Last modified</a></th><th><a href="?C=S;O=A">Size</a></th><th><a href="?C=D;O=A">Description</a></th></tr><tr><th colspan="5"><hr></th></tr> <tr><td valign="top"><img src="/icons/folder.gif" alt="[DIR]"></td><td><a href="ios-prototype/">ios-prototype/</a> </td><td align="right">07-Dec-2012 16:47 </td><td align="right"> - </td><td>&nbsp;</td></tr> <tr><td valign="top"><img src="/icons/folder.gif" alt="[DIR]"></td><td><a href="magneto-git/">magneto-git/</a> </td><td align="right">07-Dec-2012 16:46 </td><td align="right"> - </td><td>&nbsp;</td></tr> <tr><th colspan="5"><hr></th></tr> </table> I want a different HTML structure (like, say, an OL) generated when my server spits back directory listings. (FYI I'm doing a bunch of mobile browser prototyping with my local webserver & need to make it not totally horrible to browse with fingers to the right test directory — the table structure sucks, and while I can mod a lot of it with CSS it's still going to be ganky.)

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• Configuring TMUX's status bar

  - by wdkrnls

  I want my tmux session to show my current ip address in the right hand side of the status bar but I am having the hardest time figuring up the right syntax. The command works perfectly in the shell, but tmux won't parse it. set -g status-right '#[fg=white]#(host (hostname))' [Note: I am using the fish shell] I really want it to be: set -g status-right '#[fg=white]#(hostname)@#(host (hostname) | cut -d " " -f 4)' But since I can't get the former status bar to work, this is a lost cause. The weird thing is I got the first one to work once, but then I added the cut.

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• Why does partition tool GParted read the 190GB of data twice when shrink a 250GB partition to 190GB?

  - by Jian Lin

  When using GParted to shrink a 250GB partition to 190GB, I thought it will move the 60GB of data back into the 190GB region and call it done. But instead it reads the 190GB of data twice, the first time taking about 1 hour and the second time for 2 hours. The question is: 1) how come it touches the 190GB of data instead of the 60GB of data? 2) how come it reads it twice? Update: i am suspecting this: it says "moving /dev/sdb1 to the right and then shrink it to 190GB"... so is that the reason, first it is to shrink the partition to 190GB, and then move it to the right? So it is not moving to the right and then shrink it, but to shrink it first and move it. (cannot move first because the original 250GB is the whole hard drive). Also, why move it to the right?

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• Is there a way to permanently arrange 2 displays under XP?

  - by rumtscho

  When I am home or on a business trip, or on a meeting, I use my laptop in the usual way. When I get to work, I put it on the docking station and boot it with the lid closed. The image appears on the two displays connected to the docking station. On the left, there is an old monitor connected over VGA, on the right, a big widescreen connected over DVI. Obviously, the videocard seems to think that the DVI is the primary output, and the VGA the secondary one. Thus Windows always displays the widescreen on the left and the old FSC monitor on the right. So when I want to move the mouse pointer from the (physically) left display to the (physically) right display, I have to move it from right to left, which is a usability nightmare. Of course, I can just drag one display over the other one in the display properties, and then everything is as it should be. The catch: Windows remembers this only as long as it has the two displays. Every time it runs on the laptop display, it forgets the setting. Physically switching the monitors isn't an option, for ergonomical reasons. I prefer to run the more important applications on the bigger screen with the better colourspace, and the shape of my desk forces me to sit off-center, so the more important applications should be shown on the right display. Just switching the video ports doesn't help either. When I connect the big monitor over VGA, image quality deteriorates visibly. So what I do now is: every time I bring the laptop to my desk, I boot it. I wait the whole 7 minutes of XP booting, syncing network drives, etc. Then I fire up the display properties, switch to the last tab, drag the widescreen display to the right, and close. Only then can I start working. Does someone have a better idea? The laptop is a Dell Latitude 630 with Windows XP SP 3. It has an nVidia graphics card (not an onboard chip).

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• Websites down EC2 inaccessible via SSH CPU utilisation 100% last few hours - what should I do?

  - by fuzzybee

  I have multiple websites hosted on 1 single EC2 instance. 1 website "abc" were down for a few hours, sometimes threw database connection error and sometimes just took too long to respond. 1 website "def" were incredibly slow but still up and running the rest of the websites had the same symptoms has "abc" I can afford 15 min or less down time for "def". Should I then (in AWS console) reboot my instance or create an AMI image from my instance and launch it and associate my elastic IP to the new instance or "launch more like this" Background on what may have happened to my ec2 The last time I made changes for 21 hours ago. A cronjob to create snapshots ran around 19 hours ago and it has been running for a long time. Google Analytics shows traffic to my websites such as kidlander.sg has been nothing exceptional. Is there any other actions I should take or better options I could have? (I have already contacted AWS support but their turnaround is 12 hours so I appreciate all the help I could get) Update I got everything back up and running and CPU utilisation back to normal, around 30%. There is 1 difference between "def" and "abc" as well as my other websites "def"'s database is hosted on RDS "abc"'s database is hosted on an EC2 instance (different from my web server instance) configured by myself Nevertheless, I checked the EC2 instance I'm using as MySQL server yesterday and it was absolutely fine during the incident low CPU ultilisation I could log in using linux command line

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• How do I perform multi-window operations on a non-combined group of windows in Windows 7?

  - by BACON

  With multiple windows/instances of an application open and the taskbar buttons set to "Always combine, hide labels", I can Shift + right-click the taskbar button for the window group to open a menu allowing me to "Cascade", "Show windows stacked", "Show windows side by side", "Restore all windows", "Minimize all windows", or "Close all windows". With the taskbar buttons set to "Combine when taskbar is full" or "Never combine", when I right-click, Shift + right-click, or Ctrl + right-click either the button or the Aero preview for a window in the group I get a menu allowing me to perform window operations on just that one window rather than each window in the group. When I have a non-combined group of windows in the taskbar, how would I cascade, stack, etc. that group of windows?

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• Is Zoneedit reliable for DNS?

  - by Alex

  It's been around forever, right?

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• vim NERDTree shortcut to an existing function

  - by Ned Batchelder

  I want to use right-arrow to open a node in NERDtree. I see there is NERDTreeAddKeyMap, but I'm too much of a vimscript newb to know how to invoke it properly. I want right-arrow to invoke activateNode. I've done it by adding this line into NERD_tree.vim itself: exec "nnoremap <silent> <buffer> <Right> :call <SID>activateNode(0)<cr>" but I want to do it the right way in my .vimrc

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• Allow incoming connections on Windows Server 2008 R2

  - by Richard-MX

  Good day people. First, im new to Windows Server. I've always used Linux/Apache combo, but, my client has and AWS EC2 Windows Server 2008 R2 instance and he wants everything in there. Im working with IIS and PHP enabled as Fast-CGI and everything is working, but, i cant see the websites stored in it from internet. The public DNS that AWS gave us for that instance is: http://ec2-XX-XXX-XXX-121.us-west-2.compute.amazonaws.com/ But, if i copy paste that address, i get nothing, no IIS logo or something like that. My common sense tells me that maybe the firewall could be blocking the access. Can anyone help me and tell where to enable some rules to get this thing working? I don't wanna start enabling rules at random and make the system insecure. If you need any additional info, you can ask me and i will provide it. Thanks in advance. UPDATE: Amazon EC2 display this: Public DNS: ec2-XX-XXX-XXX-121.us-west-2.compute.amazonaws.com Private DNS: ip-XX-XXX-XX-252.us-west-2.compute.internal Private IPs: XX.XXX.XX.25 In my test microinstance, i just to use the Public DNS address (the one that starts with "ec2") and it works like a charm (of course, the micro instance have its own Public DNS im not assuming same address for both instances...) However, for the large instance, i tried to do the same. Set up everything as in the micro instance but if i use the Public DNS, it doesnt load anything. Im suspicious about the Windows Firewall, but, the HTTP related stuff is enabled. What should i do to get access to the large instance? I don't want to set up the domain yet, i want access from an amazon url. 2ND EDIT: all fixed. Charles pointed that maybe Security Groups was not properly set up for the instance. He was right. Just added HTTP service to the rules and all works good.

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• Autohotkey script multiple functions

  - by Vince

  Is it possible to use this bottom script but add a second hotkey and function that goes with it. ;DoOver.ini ;[Settings] ;record={LCtrl}{F12} ;hotkey to start and stop recording ;playback={LCtrl}{F5} ;hotkey to start playback ;keydelay=10 ;ms to wait after sending a keypress ;windelay=100 ;ms to wait after activating a window ;movemouseafter=1 ;move the mouse to original pos after playback 1=yes 0=no [Settings] record={LCtrl}{F12} playback={LCtrl}{F5} keydelay=10 windelay=100 movemouseafter=1 macro={WinActive}{Down}{Down}{Down}{Down}{Down}{Down}{Down}{Down}{Down}{Down}{Down}{Down}{LCTRL Down}{Right}{Right}{LCTRL Up}{LSHIFT Down}{End}{LSHIFT Up}{LCTRL Down}{c}{LCTRL Up}{MouseClick,L,236,116,1,0,D}{MouseClick,L,54,116,1,0,U}{LCTRL Down}{LCTRL Up}{MouseClick,L,474,64,1,0,D}{MouseClick,L,474,64,1,0,U}{MouseClick,L,451,77,1,0,D}{MouseClick,L,451,77,1,0,U}{MouseClick,L,44,225,1,0,D}{MouseClick,L,44,225,1,0,U} OR playback={LCtrl}{F7} keydelay=10 windelay=100 movemouseafter=1 macro={WinActive}{Down}{Down}{Down}{Down}{Down}{Down}{Down}{Down}{Down}{Down}{Down}{Down}{Down}{LCTRL Down}{Right}{Right}{LCTRL Up}{LSHIFT Down}{End}{LSHIFT Up}{LCTRL Down}{c}{LCTRL Up}{MouseClick,L,236,116,1,0,D}{MouseClick,L,54,116,1,0,U}{LCTRL Down}{LCTRL Up}{MouseClick,L,474,64,1,0,D}{MouseClick,L,474,64,1,0,U}{MouseClick,L,451,77,1,0,D}{MouseClick,L,451,77,1,0,U}{MouseClick,L,44,225,1,0,D}{MouseClick,L,44,225,1,0,U} Maybe add something like what is printed in bold here. I know the coding isnt right here, but i think this is the best way to describe what I am looking for. Anybody?

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• My control key doesn't work, how do I fix it??

  - by Blaine LaFreniere

  My control key on the right doesn't work how it should. E.g. Right ctrl + T won't open new tabs in firefox, right ctrl + w won't switch windows in vim, etc. I know the key isn't physically broken, because xev shows that the right ctrl key generates events, but it just isn't responding as I expect it to in applications. Screenshot: http://i46.tinypic.com/33w1h76.png I tried Kim's answer but it still doesn't work. blaine@blaine-laptop ~ $ xmodmap -pke | grep 105 keycode 105 = Control_R Control_R Control_R Control_R Control_R Tried to map as Control_L as well, didn't work. The computer is a laptop, I am unable to plug the keyboard in to another computer.

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• Disabling the charms bar

  - by Kelly D

  How do I disable the the charms bar? I am surprised there is no easy way to disable the feature. Here's what I've done so far: 1.) Disabled right edged swipe gesture in my touchpad settings. Part of the problem is solved as this was probably the most common way the charms bar would pop up. But there are still many other ways it can pop up. 2.) Used regedit and added the key "EdgeUI" with "DisableCharmsHint" set to 1 in HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\ImmersiveShell\ This stopped it from popping up whenever I moved the cursor to the top right or bottom right of the screen. I mean who ever needs to move his/her mouse there? (sarcasm) But there's ANOTHER WAY it pops up: when I move the cursor to the top right of the screen followed by moving it downwards OR when I move the cursor to the bottom right of the screen followed by moving it upwards! How do I disable this method of invoking the charm bar?

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• Use xrandr to set the absolute position of the screen?

  - by Eli

  I am running XFCE on Fedora 15. I use xrandr to set the secondary display (HDMI-0) to be to the right of the primary (DVI-0), however it is always at the top-right. Is it possible to set the absolute position of the display (e.g. DVI-0 at 0,0 and HDMI-0 at 1920,56), or even set the display to be at the bottom-right? I cannot modify the Xorg.conf, which would be the easy way, as that would mean generating an Xorg.conf file (there is none right now), and I do not know of any automated tool to do that (other than the fglrx driver). The reason why I need this is because I want to extend the XFCE panel accross both monitors, but with there being a 56-pixel-wide dead zone at the bottom I cannot do this.

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• merging video and audio with custom panning

  - by cherouvim

  I have: a video which has mono audio inside a audio (mono) I'd like to merge those two to a single video file containing: video from #1 audio from #1 full left pan + audio #2 full right pan Is this possible in ffmpeg using 1 command? I've tried the following which almost does this but the video/audio gets out of sync: ffmpeg -i video.mp4 -filter_complex "amovie=audio.wav [r] ; [r] amerge" output.mp4 -y I've managed to do it with multiple commands: #1 create right panned audio ffmpeg -i audio.wav -ac 2 -vbr 5 audio-stereo.mp3 -y ffmpeg -i audio-stereo.mp3 -af pan=stereo:c1=c1 audio-right.mp3 -y #2 create left panned video ffmpeg -i video.mp4 -af pan=stereo:c0=c0 video-left.mp4 -y #3 merge the two ffmpeg -i video-left.mp4 -i audio-right.mp3 -filter_complex "amix=inputs=2" video-mixed.mp4 -y It does the job, but is it possible with 1 command?

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• I want to start my portfolio site using ASP.Net and I'm a bit lost about hwo to actually put it on t

  - by Papuccino1

  I found this site: www.discountasp.net They seem cheap enough and have a track record. I decided to host my site with them. Here's where I'm confused. I host the application (my website) with them and they give me an IP address, right? Users can visit my site by typing in that IP address right? (Of course once I move the index file and create a defauly web folder, etc.) Next step is buying a domain name right? Like www.mysite.com, right? Is this the way it's done, or am I doing it wrong?

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• How do you setup a custom FastCGI and PHP5 on a shared host (to use APC)?

  - by amvx

  Im not sure if I have this setup right or not =/

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• Windows 7 starts getting sluggish over a few days

  - by munrobasher

  Myself and the other developer are running Windows 7 Enterprise 64 bit with 8GB RAM on different Gigabyte motherboards with Quad core Intel CPUs. Most of the time, it runs like a dream. We use VMware workstation a lot (hence the 8GB) and that works well. Except... now and then, after the PCs have been on for a few days, the whole system starts getting really sluggish doing certain tasks. The other's developer's system is far worse than mine with it taking up to a minute to launch IE. Today, mine has gone sluggish but nowhere near as bad. For example, normally when I click on a new tab in IE, it's instant. Today, there's an obvious delay. Right-clicking in this window to trigger iSpell is normally instant, right now it takes about five seconds. I've got resource monitor open on my second monitor and when I did that right-click, there was no obvious peak in CPU, disk or memory. A reboot does fix it so it does sound like a resource issue but haven't a clue what might be to blame. The two computers have similarities (same spec) but also differences (like motherboard, RAM & CPU models). So I guess the question is, any pointers on diagnosing why a PC is sluggish? What could cause such a right-click slow down in IE for example? It sounds like such a simple operation. NOTE: whilst typing this message alone, it was fine performance wise. I can click around the page no problem but right-click still is noticeable slow. Will reboot over lunch... Cheers, Rob.

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• latex page number position

  - by anton

  I am working on a long document in latex with documentclass book. I need the page number to always be in the upper right corner of each page, even if that page is the first page of a chapter (right now on 1st pages of chatpers, the page number is bottom-centered, on all other pages it's top-right). I control the position of the page number with fancyheader: \usepackage{fancyhdr} \pagestyle{fancy} \lhead{} \chead{} \rhead{\thepage} \lfoot{} \cfoot{} \rfoot{} \renewcommand{\headrulewidth}{0pt} Also, I don;t know if the problem is realted but my chapters do not start from the top of the page. There is a white area, then comes chapter X, then a newline with the chapter line. What I also want is the chapter to start from the top of the page. The main question here is how I can get the page number to always appear in the upper right corner, I mention the thing with the chapter title position only in case that might be related. Thanks.

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• Looking for some IIS redirect help/ideas

  - by CoreyT

  Right now we have a site with a LOT of static asp pages such as, www.site.com/123.asp. This is due to how our current site's CMS builds it's pages by default. I don't have an exact count but we have roughly 6000 asp files in the site right now. We are in the middle of a redesign and restructuring of the site, and are looking to migrate to SEO friendly URLs. The problem we're having right now is what do we do to redirect the old pages to the new friendly URLs? I know how to do redirects that is not the issue here. The problems I am coming up with right now are listed below. 1 - Is there a limit to the number of redirects in IIS? 2 - Would having even a few thousand redirects affect IIS performance? 3 - My understanding is that we would not be passing along page rank to the new URLs, is that true? (not a major question I can ask on more SEO forums if nobody here is sure) 4 - Would using something like the IIS URL Rewrite 2 module for IIS 7 help us out? Or would I still need to define several thousand unique redirects in it? Our server right now is running Server 2003, however in the redesign I would be open to migrating to Server 2008 R2 if there is a good case for it (i.e. the URL Rewrite module). Thanks for any guidance or help. I have been looking for a good way to do this for a while now and keep coming up with things that sound problematic and bad (such as having 6000 redirects).

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• Setting Screen Resolution for Extended Display on Windows 8

  - by ptamzz

  I'm using a Dell Inspiron laptop with Windows 8 Developers Preview. I've connected a second screen (some Dell 22 inch one) and have been using it with 'Extend these displays' options in the Screen Resolution settings. It use to be all fine but yesterday I changed my VGA cable to the 2nd monitor and since then the resolution of the 2nd monitor is not setting properly. Earlier, while auto detecting the monitor, the right resolution use to appear but now, as you can see from the attached image, none of the resolution in the drop down fits with the right proportion. So how do I set the right screen resolution. (I think the right one is 1680 x 1050 which is not there in the list)

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• Run a rails server on Amazon EC2 [on hold]

  - by Jashwant

  Context: I've tried rubber gem, but that does not fulfill my requirements ( I needed to deploy on existing instance, so don't recommend me rubber) So, I followed this excellent tutorial http://stackoverflow.com/questions/15535140/installing-ruby-2-0-and-rails-4-0-0beta-on-aws-ec2 Now, I have ruby 2.0 and rails 4.0.0 running on AWS EC2. I successfully ran the server with RDS (mysql) as db and default webrick as server ( Using command rails server ) But, I've read that webrick is a development server and shouldn't be used at production. What I tried: I googled and came up with some alternatives. Capistrano Nginx / apache with passenger Passenger with Capistrano Unicorn Puma My Question: What exactly is capistrano / passenger ? Are they middleware to ease my deployment process ? I don't see any difficulty in doing rails server command. If they are just middleware, nginx with passenger and capistrano does not make any sense ? Why would I add a learning curve ( to learn nginx, passenger and capistrano configs) just to run my server ? I can just use nginx to deploy my app. Can't I ? What combination should I use on Amazon EC2 (or may be at any some other production server).

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• Remap key combinations in Windows

  - by nickf

  This question is similar to this one, but the accepted solution doesn't work in my case. I work on two different laptops. On one, the Home and End keys are only available by pressing Fn+Left and Fn+Right. This can make it rather annoying when switching between the two since I always go to press Fn-Right and not get what I want. The tool suggested in the other question is Sharpkeys, however it doesn't recognise Fn+Right as a different key from Right, and I suspect that registry twiddling isn't going to help me here. (?) Is there any way to remap this combination? (I'm on Windows Vista if that helps)

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