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• Setting font size of Closed Captions on iPhone

  - by forthrin

  Does anyone know if it's possible to control the font size on videos played in the built-in iPhone video player? The subtitles (or "Closed Captions") that are there by default are rather small. None of the attempts below change the font size at all: ffmpeg -y -i in.mkv -i in.srt -map 0:0 -map 0:1 -map 1:0 -vcodec copy -acodec aac -ab 256k -scodec mov_text -strict -2 -metadata title="Title" -metadata:s:s:0 language=eng out.mp4 sudo port install mplayer +mencoder_extras +osd mencoder in.mkv -sub in.srt -o out.mp4 -ovc copy -oac faac -faacopts br=256:mpeg=4:object=2 -channels 2 -srate 48000 -subfont-text-scale 10 -of lavf -lavfopts format=mp4 mp4box -add output.ttxt:hdlr=sbtl:size=50 output.mp4 Should we assume that iOS simply disregards size information, or has anyone ever seen styling of subtitles actually work on iOS? Anyone know how to make this work?

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• IOException opening RFCOMM on openSUSE

  - by Chief A-G

  I have a permissions problem on openSUSE with Bluetooth /dev/rfcomm0. I've written a small test application which opens /dev/rfcomm0 and sends a request message and retrieves a response message. At first my problem was a permission denied error on /dev/rfcomm0 until I added the user account to the dialup users group. Now I get a System.IO.IOException Interrupted system call error whenever I run the app. I can sudo my application and it runs fine. I'm not sure how and which permissions to set to get this work work under my normal user account.

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• Which simple server virtualization solution to use?

  - by vvanscherpenseel

  For one part of our hosting platform we are currently using VMware Server 2 to create two virtual machines on one physical machine. One VM is used for hosting of small websites, the other VM is used as a staging environment. Both the host OS and guest OSes run CentOS Linux. Support for VMWare Server 2 has been discontinued and we are currently looking for a replacement. We only use basic functionality (we don't use snapshots, moving around VMs to different physical machines, or other 'advanced' functionality'). Just a box, with two VMs. We are looking for a virtualization solution that has long-term support, is stable and allows configuration/management from Mac OSx (I understood that Xen only has a Windows client). What would be the right solution for us?

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• How can I password-protect a Mac shared folder on a Windows workgroup?

  - by Phillip Oldham

  We have a Mac-mini running 10.5.8 which already acts as a fileserver for our simple Windows (mixed XP/Vista) workgroup. The Mac-mini is on the same workgroup and the files are shared via SMB, FTP, and AFP. Basic file-sharing is working, and has been for some time. We'd now like to add an additional directory/share which can be secured by a password so that only a small number on the network have access. Is this possible? I've already tried creating the additional folder on the mac system, adding it to the shared folders, and limiting it to a specific "shared user", however it's not possible to log-in from an XP machine. Adding a sub-directory to the currently working share and giving limiting it's access to the shared user doesn't work either.

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• Launching multiple applications with a single command/script/shortcut

  - by Bill

  I realized a few days ago that every time I sit down at work, I do a few things after unlocking my computer. First, I open up Firefox, then I open up Chrome, then I log in to Digsby. I realized I could probably save repeating this daily by writing a small batch script to open up Firefox and Chrome , but I couldn't figure out how to make it work.. and since the whole effort is to save time I don't want to bash my head around in the windows command prompt to do it. I also tired this in powershell but ran in to a bunch of security nonsense. Is there a way to do this that I am missing? Bonus points if somebody has figured out how to manipulate Digsby via COM , scripting, or python =)

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• Dust prevention for home servers [closed]

  - by Payson Welch

  I found some posts on here about dealing with dust relating to servers but nothing that specifically addressed my question. I have several servers at home for research and as you can probably guess they are not cheap. It is impossible for me to remove 100% of the dust from my home as much as I may try. Does anyone know of any practical solutions to filtering the air that will go into the servers? For instance maybe place some sort of material over the bezel to catch dust particles before they enter? I realize the ideal home solution would be to have a small room with environmental controls but I'm not there yet. Thanks!

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• Monitor Windows Terminal Sessions from Linux/Mac

  - by mhd

  I'm writing some scripts to make remote connections to a Windows 2003 server a bit more user-friendly, and in doing this I want to see who's logged in already. In Windows, I could use qwinsta.exe to do this, even for remote servers. So it is exposed somehow, but I couldn't find a matching command line tool for Unix. Lacking such a tool, I could install an ssh server on the machine and call it remotely, parsing the output or write a small service of my own that would expose this via http, if I don't want full-blown ssh access. Do I have to do this, or is there already a tool for querying terminal services remotely?

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• Get percentage free space on database volumes w/ SQL Server 2005?

  - by Allen

  I am currently using SQL Server 2005 and (undocumented I believe) master..xp_fixeddrives to get free space on my database volumes as part of my monitoring. However, this only gives me an absolute number of MB free. What I really need is percentage free. Is there another way in SQL Server 2005 to get this? If not, is there some other light-weight way to get it? If I can, I want to avoid installing a Java JRE, or Perl, or Python on my database server. Perhaps vbscript, or a small Windows executable on the file system? Yes, I know I can Google this, and I have. It looks like there are a few ways to accomplish it, and I'm curious how my DBA brethren have handled this.

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• Chef command to create new ec2 instance with second ebs volume attached and mounted instead of the default ephemeral volume?

  - by runamok

  We currently use this command to create a new ec2 instance with chef: knife ec2 server create --node-name=prod-apache-1 --availability-zone us-east-1c --image ami-3d4ff254 --distro ubuntu12.04-gems --groups "default" --ssh-key foo --identity-file ~/.ssh/id_rsa --ssh-user ubuntu --flavor m1.small After this command we then run further chef commands to finish provisioning the server. I was wondering if it would be possible while first setting up the instance I wanted a 100 gb volume created and mounted at /mnt and to have the ephemeral storage mounted at /tmp or /mnt-ephemeral instead. If not what further commands in chef would you advise running? I know how to do this via the aws console and can probably figure out how to do it via the ec2 command line tools but I am knew to chef and a bit overwhelmed.

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• How can I tell if my live web-server is overloaded?

  - by Nick G

  We have a live webserver which doesn't seem to be performing all that well. It's a Dell PowerEdge machine, a few years old (dual core, 4GB) which is hosting about 20 low-traffic websites. However it doesn't seem to be as fast as it used to be. How can we determine the cause of this? If it's website traffic, I would be expecting high CPU but CPU usage is quite low and hovers around the 15-30% mark except for very brief periods. I'm wondering perhaps, if rather than CPU performance being a problem, perhaps it's disk thrashing due to the constant read/writes of all the small web files and database queries. It has 4x 7200 RPM SATA drives in RAID 5. So is there a way to check that it's not disk thrashing?

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• How to make the Microsoft Word 2010 web install version completely download itself?

  - by Paperflyer

  I installed Microsoft Word 2010 using the handy web installation feature. The way this works is that Word installs a bare minimum of functionality and any time it needs a feature that has not been downloaded yet, it will download it in-place just as needed. The thing is, this is stalling Word every few minutes. Every few minutes, Word takes a small nap while it tries to find some obscure feature somewhere. This is really annoying. Is there a way to just tell the thing to completely download itself? This was a nice functionality for the trial but it is extremely annoying in actual use.

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• Automated VLAN creation with residential Wireless devices

  - by Zephyr Pellerin

  We've got a few WRT devices from Linksys here, and the issue has arisen to deploy them in a relatively small environment, However, in the interest of manageability we'd like to be able to automatically VLAN (ideally NOT subnet) every user from one another. It seems obvious to me that the default firmware isn't capable of this - can OpenWRT/Tomato/DD-WRT support any sort of functionality such that new users are automatically VLANed or otherwise logically separated from other users? It seems like there's an easy IPtables or PF solution here, but I've been wrong before. (If that seemed a little ambiguous, heres an example) User 1 sends DHCP request to server, new VLAN (We'll call VLAN 1) is created, user is placed in that VLAN. Then, user 2 sends a DHCP request and is placed in VLAN 2 etc. etc.

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• How can I figure out which PHP extensions aren't being used?

  - by Tom Marthenal

  I manage a server (running Ubuntu) which hosts our client's sites with a few dozen different PHP-based websites, mostly small sites but also some installations of CMSes and forums. I used the get_loaded_extensions() method to see what extensions I have loaded. To help streamline the server (remove unnecessary extensions to make upgrading easier and marginally improve speed), I'd like to remove extensions that aren't being used by any of the sites. I currently have 54 different extensions loaded. I can easily eliminate some of these from the list which I know are used, but others I am less sure about. Is there some way that I can see extensions which have not been used recently?

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• How to step down voltage from 208V to 110V

  - by Eric Dennis

  I have some racks that will be fed by 208V/20A circuits. These circuits will be conditioned and battery-backed by the facility in which these racks will live. 99% of the devices in the rack will be able to support 208V input, so I plan to use these PDUs. However, there may be one or two odd devices that will need 110V input. I know that I can use a step-down transformer to provide 110V for these devices, but that seems like overkill for such a small number of devices, plus I don't want to pay extra for the UPS functionality since my power will already be battery-backed. Any suggestions for something I can use for these one-off 110V devices?

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• Set up an Email server on intranet without domain

  - by Devdatta Tengshe

  I work in a small office with about 35 people and we are all on a intranet. This network is not connected to the internet. Is it possible to set up an email server, with which we could send emails to each other? (We don't need to send emails outside our network.) I cannot use a messenger service like Openfire, since the messages could be asynchronous, and we'd like to get those emails in a email client like Thunderbird. Another obstacle we have is that we do not have a domain name. Any ideas on which free (as in beer) software could be used? We have both Windows and Linux machines.

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• Client PC not booting when certain TFT plugged in - TFT or graphics card failure?

  - by Chake

  here comes something quite strange: On a client machine (DELL Vostro 420) we experienced problems when booting: when turning on the machine beeps normal but doesn't display anything and doesn't boot. After some testing I found out, that this only happens if one (of the two) monitors (Iiyama ProLite E2472HDD) is plugged in while booting. If the other monitor (TFT 2) is plugged in everything is fine. Here a small illustration, TFT 1 is the bad guy: TFT 1 | TFT 2 | failure x | x | x x | | x | x | After BIOS-Phase I can safely plug in TFT 1 and everything works just fine. The question is, what can be done to avoide this behavior: Change monitor? (Iiyama ProLite E2472HDD) Change graphics card? (GeForce 9800 GT) Other suggestions?

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• is it okay to use random URLs instead of passwords?

  - by stew

  Is it considered "safe" to use URL constructed from random characters like this? http://example.com/EU3uc654/Photos I'd like to put some files/picture galleries on a webserver that are only to be accessed by a small group of users. My main concern is that the files should not get picked up by search-engines or curious power-users that poke around my site. I've set up an .htaccess file, just to notice that clicking on http://user:pass@url/ links doesn't work well with some browsers/email clients, prompting dialogs and warnings messages that confuse my not-too-computer-savy users.

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• Password protected traffic meter

  - by UncleBob

  Hi first, I have a small problem for which I haven't found a solution yet. I live in Bosnia and share the Internet connection with the landlady, and as is usual in Bosnia, we do not have a flat rate, but a 15 Giga traffic limite. That would actually be more than enough, if the son of the landlady wouldn't be watching videos all the time, so the bills are truning out rather expensive. I have already installed a traffic monitoring program, but he apparently turns it off as soon as he comes close to his limit and then denies that he consumed any more. I therefore need at least a measurement program that is password protected and / or notes in the log when it's been turned off. Even better would be a program that just cuts his access when he exceeds his share, ie a mixture of Traffic meter and Parental Guard. Can someone help me out here?

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• innodb memory usage mysql

  - by Tiddo

  I have a small vps, with only 256mb of ram, with maximum burst up to 512mb. When I configure my vps without innodb, it only uses 130 mb of ram, so that is no problem for me. But when I turn on innodb, The memory usage grows to about 300-400 mb. Is it possible to run innodb such that I won't exceed the 256mb? preferably I don't want to use more than 100mb for innodb. I already came across some sites which said I could limit the memory usage, but if I limit it to only 100mb will the db run well enough? (compared to for example the MyISAM storage engine) If 100mb is to little memory for innodb, can you recommend me any other storage engine which supports transactions?

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• Exchange 2010 and DAG - all roles on both servers?

  - by Keith

  We just recently migrated to an Exchange 2010 server. Currently all of the roles and mailboxes are installed on 1 server (we are a small company with less than 100 users). I am wanting to use DAG for replication however it seems most set ups for DAG requires at least 3 or 4 total servers. Is there anyway to make this work with just two servers and both of these servers would have all the roles and mailboxes? Maybe there is a better way to do this than DAG? I'm open for suggestions. The goal here is to have some sort of replicated server so that if there is an issue with our primary Exchange server, another one can be brought up within an hour or so with all current information (not a backup). It doesn't necessarily have to be instantaneous.

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• Best (physical) DRM free MP3 players [closed]

  - by alex

  I'm looking to purchase an MP3 player soon. It should: Be compatible with Windows Media Player Hold at least 40 GB Be completely DRM free Be reliable and well built. I don't want to repeat my iRiver experience. Be small enough to be comfortably carried in my pocket. I don't care about looks, this can be the ugliest beast ever. Knowing this, what should I buy? [I figured this is almost on topic for Super User, if not: vote to close it.]

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• Multiple workstation setups using virtualization - best solution

  - by Vazgen

  I'm looking to set up a server for my small startup. I have a few employees and would like to use my computer at home to provide them all with workstations. Each workstation should have the same collection of software installed but each user's workstation should be completely separate from the others. I need each user to be able to remotely log in to their workstation (using TeamViewer or something like it) and I want to be able to monitor their workflow from my screen. I suppose I need a virtualization solution. Can anybody recommend one with easy set up, I'm not a server administrator.

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• Why does Exim puts emails on hold if there are frozen messages in the queue?

  - by user51932

  I've a CentOS with CPanel server working as a SMTP server, which currently uses 20 different hostnames and IP addresses to deliver email for an email newsletter service. However, it's extremely slow in sending emails. It's sending like 10 emails per minute, which I check by running the "exim -bpc" command. What could be affecting this? One thing I'm supposing, is that there are frozen messages in the queue, which are slowing down the sending until they're sent out, and are putting new messages on hold. What are the most common reasons a message can get frozen? Also, would it be more efficient to use 20 different small VPSs to send out email rather than use one large VPS with the 20 different hostnames and IPs in it?

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• MP4 video - edit audio track

  - by Maccaius

  I have recorded some nice sport videos with mz GoPro HD action camera. I would like to edit the audio track. I dont want to get rid of the whole audio track - just erase small parts (e.g. compression artifacts or me saying some swearwords). When the original audio track is cleansed, Id add another music layer in FCE afterwards. I'd really like to edit the audio like in a WaveLab etc. Any ideas?

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• How can I make .vimrc read from an external file?

  - by GorillaSandwich

  I'd like to modify my .vimrc to read the value of a variable from an external file. How can I do this? Specifically, a friend and I share a git repo with our .vim files, but there are a few small differences in what we want in our configs. So most of the file is common, but we use if statements to determine whether to load user-specific sections, like this: let whoami = "user2" if whoami == "user1" ... After checking our common .vimrc out of source control, we each have to change the let whoami assignment so our own section will be loaded. Instead, I'd like to keep a separate file, which can be different for each of us, and from which vim will load that variable value. Maybe another angle on this is: Will vim automatically read all the files in my .vim directory? If so, we could each put a symlink in there called username.vim, and link that to an external file that would be different for each of us.

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