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• X11 forwarding from one server to other

  - by n3oblit7

  I have a setup where I need to forward X11 from my local machine (laptop) to a Virtual machine. The server hosting this VM cannot be reached directly from my laptop. I need to first login to a gateway and from this gateway, I can access the VM. How can I forward X11 from my laptop to this VM? I have tried following but these do not work: [laptop # ] ssh -X [gateway] [gateway # ] ssh -X [VM] [laptop # ] ssh -tX [gateway] ssh -X [VM] I could forward X11 only till the gateway. (DISPLAY variable gets set on gateway)

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• Setting Events in Matlab/Simulink Stateflow

  - by GuiccoPiano

  How can I set an event in a Simulink Stateflow (statechart) based on some value. What I mean is this. I have a variable called "choice". This "choice" comes in as an input from a simulink block.The value of choice is between 1 and 4. So all I want to do is this: if choice == 1 then trigger/set eventBlue if choice == 2 then trigger/set eventRed if choice == 3 then trigger/set eventWhite if choice == 4 then trigger/set eventGreen else trigger/set eventYellow So how do i do that? what is the command?

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• How Do I Parse a String?

  - by Russ

  I am new to bash, and I am creating a script that loops through the files in a directory and based on part of the filename, does something with the file, so far I have this: #!/bin/bash DIR="/Users/me/Documents/import/*" for f in "$DIR" do $t=?????? echo "Loading $f int $t..." done so $f will output something like this: /Users/me/Documents/import/time_dim-1272037430173 out of this, I want time_dim, the directory can be variable length and -1272037430173 is a fixed length (it's the unix timestamp btw). What is the best way to go about this?

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• How best to automatically deal with multiple site_ruby locations?

  - by cclark

  Is there a way to automatically append to $: variable in ruby to account for additional site_ruby locations? Ruby is installed in /usr/local/ and using gem_install will properly install the new ruby files in to /usr/local/lib/ruby/site_ruby. However there are some RPMs for ruby bindings to tools like shadow which we'd like to install and they install to /usr/lib/ruby/site_ruby (no local). Is there a standard way to tell ruby that this directory should also be included by default? I know scripts could dynamically update $: or they could be called with -I but it seems like this is something that should be handled in the install. Has anyone else found a clean way around this kind of problem? thanks, chuck

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• Notepad++ or other application to replace string with numeric function

  - by user38963

  Hello. I am using Notepad++ and attempting to replace all numeric strings within a specific tag (xxxxof my XML document with a new string which has been modified by a specific variable. Here's an example (please remove the space between < and start): < start501234< /start round(501234 * 0.9) = 451111 < start451111< /start Is there a way to automatically find all numeric values within the start tag and do replace it by that same value multiplied by 0.9? I don't have to use Notepad++ if there's another tool that can do this. Thanks!

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• Different behaviour of script locally and over ssh

  - by neorg

  I have a script on a server-A Script-A #!/bin/bash -l echo "script-A.sh" | change-environment.sh When I ssh onto server-A and execute it, it works fine. However, when I ssh user@server-A ./script-A.sh Script-A executes, but throws an undefined variable error in change-environment.sh. change-environment.sh runs in the c shell(I have no control over the script so the method I have used is about the only way I can use it), but everything else is in bash. Had found a similar question at I can run a script locally, but cannot do "ssh HOSTNAME /path/to/script.sh". However, there was no solution to the issue and it was a year old.

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• How can I get the comment of the current authorized_keys ssh key ?

  - by krosenvold

  Edit: What I really need to know WHICH ssh key from authorized_keys has been used to identify the currently logged on user. According to "man sshd": Protocol 2 public key consist of options, keytype, base64-encoded key, comment. I see that when I use ssh-keygen, the comment is usually the local identity of the user. Is there any way to access this value when I'm on the remote computer ? (Kind of like the SSH_CLIENT shell variable) (Assuming I enforce the comment to be a remote identity of some sort, I would like to log this from a shell-script! This is on ubuntu)

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• WSO2 Installation Stops

  - by Nik

  I am only trying to get WSO2 Data Services to start up on an Ubuntu 10.04 LTS server. I have installed Java, set the JAVA_HOME environment variable, and download the binary distribution from WSO2. When I run /opt/wso2dataservices-2.6.2/bin/wso2server.sh, everything seems to start up fine and I can start to navigate to the page. The problem is a few seconds later, the console says Killed and everything stops. Does anybody have any ideas for how I can figure out what's going on? Edit: It seems to stop when I try to access the page, but not on its own.

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• Need to call a script at logon based on hostname. Win 2k3 Domain and XP/7 workstations.

  - by Malocchio

  I have a user logon script. I want to install printers based on hostname. Inside this folder \domain.local\SYSVOL\domain.local\Policies{DF3F608C-8D78-934F-B79F-1965F3C4409B}\User\Scripts\Logon I have cmd files for each host/workstation and the logon.cmd. Terminal Servers are honoring the environment variable %clientname% but the workstations are not. Relevant area of logon.cmd rem Delete all existing printer connections c:\windows\system32\con2prt.exe /f rem Call workstation specific script for connecting to printers %clientname%.cmd Excerpt from clientname.cmdL: rundll32 printui,PrintUIEntry /in /n\\fileserv\PhaserPS rundll32 printui,PrintUIEntry /in /n\\fileserv\CanonIR rundll32 printui,PrintUIEntry /y /n\\fileserv\CanonIR

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• How to make vim display unicode

  - by Yitzchak

  I am trying to work with a utf-8 encoded xml file in vim 7.3 running on ubuntu. ASCII characters display normally but vim gives me gibberish instead of the unicode characters. After trying the following, I've reached the limits of my knowledge: 1) Checked that unicode was enabled by running set termencoding?. Output was termencoding=utf-8. 2) I installed the script from here (vim.org/scripts) 3) moved my ~/.vimrc file into ~/.vim 4) moved it back into ~ 5) followed the instructions in the accepted answer to this question. Is there some other variable I'm supposed to set? I know my system has the fonts I need. Update: Issue seems to be limited to html files for some reason.

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• Why can't I install MySQL on my computer? [closed]

  - by Bea

  I have read a lot of tutorials, but I am still having problems. What I tried: I downloaded mysql-5.5.9-winx64. All that I read says that I can run Setup.exe, but there is no such file in the download. The other option I know there is, is including \mysql-5.5.9-winx64\bin in the PATH variable and then trying to execute the mysql command. When I do that, the error I get is: ERROR 2003 (HY000): Can't connect to MySQL server on 'localhost' (10061) I then downloaded mysql-5.5.9-winx64.msi, which is easier to install, but once I followed the instructions and it was installed, I got the same error executing the mysql command. How can I use MySQL? EDIT: I've now removed everything I installed, and I want to start from scratch.

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• Non-blocking service to receive messages on port via UDP

  - by stUrb

  I want to build a service on my Linux VPS which listens to a certain UDP port and does something with the (text)message which is captured. This processing consists of appending the message to a locally stored txt-file and send it as http, with a post variable to another server. I've looked into Nginx but as far is can see this server can only be bound to receive http packets. Although it is asynchronous. What is the best way to achieve this listening-service on linux? And which has the capabilities to do the above mentioned processing?

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• Search Replace extended in a html file

  - by Fake4d

  i have a little question. I have a big html file and want to replace lots of things inside a lot of times. The only problem i cant solve is a replace with a variable. Example: <image src="start_files\0002.jpg" style="width:216pt; height:162"> should be transformed in <a href="start_files\0002.jpg" target="_blank"><image src="start_files\0002.jpg" style="width:216pt; height:162"></a> do you have an idea how to do it? I have a windows system with Notepad2 and Notepad++ and i could install a new tool if needed. (like Windows SED). The best solution would be a batch solution where i can add other transformations. Hope you have got good ideas! Thanks forward, Fake4d

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• psql editor setting on Ubuntu

  - by dezso

  The situation is the following. This is an Ubuntu box: Linux ns3mx3 2.6.32-41-server #89-Ubuntu SMP Fri Apr 27 22:33:31 UTC 2012 x86_64 GNU/Linux Which means that when I first issue \e in psql, I'm asked to choose an editor. Then there is the .selected_editor file, which contains # Generated by /usr/bin/select-editor SELECTED_EDITOR="/usr/bin/mcedit-debian" So far this is OK (it's my problem that I consider this completely useless, but never mind). Then I set up a .psqlrc file: \set PSQL_EDITOR /usr/bin/vim \set EDITOR /usr/bin/vim \set VISUAL /usr/bin/vim As you can see, I wanted to be sure not to miss a candidate variable for editor setting. The file is used as expected: test=# \echo :EDITOR /usr/bin/vim But when I issue the \e command, none of these is used - I fall back to SELECTED_EDITOR. The situation remains just the same if I append an \unset SELECTED_EDITOR to the .psqlrc file. Now how can I make .psqlrc setting win over the default editor? (PostgreSQL version id 9.1.4)

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• Entering the user's name in a URL for Chrome through Group Policy

  - by Automate Everything

  I am managing a Windows Server 2008 R2 server, with several Windows 7 machines, and we have recently deployed Google Chrome using Group Policy. We also have a locally hosted intranet for storing procedures, forms, and so on, as well as reports that pull directly from our databases. I am trying to put the user's name in the startup URL for Chrome, so that when they open Chrome at the beginning of the day, it can pull a list of items from the database that contains their username. The report works, and I have it using a drop down right now, but I would like to be able to put their username in the URL as a GET variable instead. Does anybody know how I would go about doing that for Chrome? I tried putting ${user_name} in the URL, and I tried putting %username% in the URL, but that didn't translate to anything. Is there some way to escape it so that it gets translated by the system into a username? Any help would be greatly appreciated.

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• cygwin ssh shortcut on windows desktop

  - by Alex Berkoff

  I have multiple servers that I need to remote into. I prefer Cygwin over Putty to do so. Anyhows - the process of opening my cool Mintty window and then typing the following commands takes too long. PS - I am using a "key" authentication to these servers. First, I double Click Cygwin Terminal shortcut from my windows desktop. Then once the terminal session has booted up, from the command prompt I type the following - $ eval `ssh-agent` $ ssh-add $ ssh <username>@<servername> Please keep in mind that my 'servername' is variable. In fact I have about 10 different server names that could potentially be inserted there - Hence my need for 10 different shortcuts. I would prefer to double click on something from my desktop that will fire up my Mintty and automatically execute the above bash shell commands. Does anyone have or can recommend a nice/elegant solution to do this?

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• FFMPEG settings for Youtube and facebook video uploads

  - by eco_bach

  Can any FFMPEG experts share their preferred settings for video conversion to both Youtube and Facebook? For youtube I am following these guidelines and my video size is 480P @ 24 fps Audio Codec: AAC-LC Channels: Stereo or Stereo + 5.1<br> Sample rate 96khz or 48 khz<br> Video Codec: H.264 Progressive scan (no interlacing)<br> High Profile<br> 2 consecutive B frames<br> Closed GOP. GOP of half the frame rate.<br> CABAC<br> Variable bitrate. No bitrate limit required Color Space: 4.2.0 http://support.google.com/youtube/bin/static.py?hl=en&topic=1728573&guide=1728585&page=guide.cs

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• Postfix + LDAP + Recipient Delimiter

  - by Coops

  I'm trying to get my Postfix and LDAP-backend to accept recipent delimiters (aka address extensions). The rest of the mail system is working fine, but when an email is received with an extension (e.g. [email protected]), it tries to look up "coops+test" against the LDAP service and fails. Obviously this is wrong, and it should strip out the "+test" part. In my postfix config the string being passed to the LDAP service is "%s", per an example line below: accounts_query_filter = (&(objectClass=MailAccount)(mail=%s)(accountActive=TRUE)(delete=FALSE)) Is there a postfix variable which represents the email account minus the extension? I've found a similar post here, but no actual solution.

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• Use alias source with relative path

  - by notme

  I want to add an alias file to my project folder to quickly open and edit files in it with a simple shell command. To make it more portable, I would like to use only relative paths. I want something like this: ### .profile source /my/project/folder/aliases.bash and ### aliases.bash editprojectfiles="edit [/my/project/folder/]afile.txt" The problem for me now is how to retrieve [/my/project/folder/] automatically. I tried to use $PWD variable, but the result is that the alias points to the folder of .profile file and not the aliases.bash ones. Is there a way to get this?

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• SNMP - So I have a MIB. Now What?

  - by senfo

  I can't seem to get my head wrapped around the purpose of a MIB. I have a collection of ~20 MIB files that were supplied to me by the vendor, but what do I do with them? I also have a few OID's that were supplied by the vendor that don't seem to be valid. When I issue an "snmpget -v1 -c public 192.168.0.123 .1.4.6.3.2.6.2" (assume that's a valid OID), I get an error indicating the variable is unknown. Does this sound like a hardware configuration problem? Do I need to "load" (for lack of better words) the MIB into the device? Unfortunately, the vendor has been completely unresponsive with returning emails to my questions, so any help would be greatly appreciated.

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• ODBC in SSIS 2012

  - by jamiet

  In August 2011 the SQL Server client team published a blog post entitled Microsoft is Aligning with ODBC for Native Relational Data Access in which they basically said "OLE DB is the past, ODBC is the future. Deal with it.". From that blog post:We encourage you to adopt ODBC in the development of your new and future versions of your application. You don’t need to change your existing applications using OLE DB, as they will continue to be supported on Denali throughout its lifecycle. While this gives you a large window of opportunity for changing your applications before the deprecation goes into effect, you may want to consider migrating those applications to ODBC as a part of your future roadmap.I recently undertook a project using SSIS2012 and heeded that advice by opting to use ODBC Connection Managers rather than OLE DB Connection Managers. Unfortunately my finding was that the ODBC Connection Manager is not yet ready for primetime use in SSIS 2012. The main issue I found was that you can't populate an Object variable with a recordset when using an Execute SQL Task connecting to an ODBC data source; any attempt to do so will result in an error:"Disconnected recordsets are not available from ODBC connections." I have filed a bug on Connect at ODBC Connection Manager does not have same funcitonality as OLE DB. For this reason I strongly recommend that you don't make the move to ODBC Connection Managers in SSIS just yet - best to wait for the next version of SSIS before doing that.I found another couple of issues with the ODBC Connection Manager that are worth keeping in mind:It doesn't recognise System Data Source Names (DSNs), only User DSNs (bug filed at ODBC System DSNs are not available in the ODBC Connection Manager)  UPDATE: According to a comment on that Connect item this may only be a problem on 64bit.In the OLE DB Connection Manager parameter ordinals are 0-based, in the ODBC Connection Manager they are 1-based (oh I just can't wait for the upgrade mess that ensues from this one!!!)You have been warned!@jamiet

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• Clang warning flags for Objective-C development

  - by Macmade

  As a C & Objective-C programmer, I'm a bit paranoid with the compiler warning flags. I usually try to find a complete list of warning flags for the compiler I use, and turn most of them on, unless I have a really good reason not to turn it on. I personally think this may actually improve coding skills, as well as potential code portability, prevent some issues, as it forces you to be aware of every little detail, potential implementation and architecture issues, and so on... It's also in my opinion a good every day learning tool, even if you're an experienced programmer. For the subjective part of this question, I'm interested in hearing other developers (mainly C, Objective-C and C++) about this topic. Do you actually care about stuff like pedantic warnings, etc? And if yes or no, why? Now about Objective-C, I recently completely switched to the LLVM toolchain (with Clang), instead of GCC. On my production code, I usually set this warning flags (explicitly, even if some of them may be covered by -Wall): -Wall -Wbad-function-cast -Wcast-align -Wconversion -Wdeclaration-after-statement -Wdeprecated-implementations -Wextra -Wfloat-equal -Wformat=2 -Wformat-nonliteral -Wfour-char-constants -Wimplicit-atomic-properties -Wmissing-braces -Wmissing-declarations -Wmissing-field-initializers -Wmissing-format-attribute -Wmissing-noreturn -Wmissing-prototypes -Wnested-externs -Wnewline-eof -Wold-style-definition -Woverlength-strings -Wparentheses -Wpointer-arith -Wredundant-decls -Wreturn-type -Wsequence-point -Wshadow -Wshorten-64-to-32 -Wsign-compare -Wsign-conversion -Wstrict-prototypes -Wstrict-selector-match -Wswitch -Wswitch-default -Wswitch-enum -Wundeclared-selector -Wuninitialized -Wunknown-pragmas -Wunreachable-code -Wunused-function -Wunused-label -Wunused-parameter -Wunused-value -Wunused-variable -Wwrite-strings I'm interested in hearing what other developers have to say about this. For instance, do you think I missed a particular flag for Clang (Objective-C), and why? Or do you think a particular flag is not useful (or not wanted at all), and why?

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• Which cloud hosting should I use? [closed]

  - by Alyssa Marie Isk

  Possible Duplicate: How to find web hosting that meets my requirements? If anyone wants to get some real life karma by giving a tiny non-profit pointers, please advise! I posted a thread about our website with highly variable traffic (www.WorldOceansDay.org). The event is on June 8th, and the traffic goes from 100-400/day in the off-season, to about 200,000 trying to access the site at any one time on June 8th. It's a Wordpress site hosted on GoDaddy shared hosting and predictably crashed horribly. From the internet's feedback, we've decided to move to a cloud server to handle the traffic, but I'm a huge newbie and I don't have very reliable mentorship, so I'm turning to crowdsourcing. We're trying to decide between Amazon Web Services and RackSpace Cloud servers. Our sys admin consultant also suggested GoDaddy's new 4GH but I have had such incredibly bad experiences with GoDaddy thus far that I am hesitant. From what I've read on the internet, RackSpace might be cheaper? Would AWS totally break the bank? We don't have a ton of money to spend on hosting. We'll also be using CloudFlare to cache and serve the pages since they're dynamic. I've found a few AWS & RackSpace calculators but I am not 100% on how to find those numbers... GoDaddy? Google Analytics? AWS calc is here: http://calculator.s3.amazonaws.com/calc5.html Rackspace is on the right: http://www.rackspace.com/cloud/cloud_hosting_products/servers/pricing/?0a313380 If anyone can help, or through some miracle feels like walking me through this, I would be incredibly appreciative.

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• Error when compiling FXAA shader

  - by mulletdevil

  I am getting the following error when compiling the FXAA shader downloaded from here http://timothylottes.blogspot.co.uk/2011/07/fxaa-311-released.html Fxaa3_11.h(934,5): error x4000: Use of potentially uninitialized variable (FxaaPixelShader) Here is the line in the shader if(earlyExit) #if (FXAA_DISCARD == 1) FxaaDiscard; #else return rgbyM; #endif Does anyone know what may be causing this? I have not changed any values in that shader. Here is a snippet from my current pixel shader #define FXAA_GREEN_AS_LUMA 1 #define FXAA_HLSL_4 1 #define FXAA_PC 1 #define FXAA_QUALITY__PRESET 12 #include "Fxaa3_11.h" PS_OUTPUT main(PS_INPUT fragment) { PS_OUTPUT output; const float2 pos = fragment.hPosition.xy; const float4 notUsedFloat4 = float4(0.0f, 0.0f, 0.0f, 0.0f); const float fxaaQualitySubpix = 0; const float fxaaQualityEdgeThreshold = 0.333; const float fxaaQualityEdgeThresholdMin = 0.0833; const float notUsedFloat = 0.0f; FxaaTex fxaaTex; fxaaTex.smpl = SampleType; fxaaTex.tex = inputTexture; output.colour = FxaaPixelShader(pos, //1 notUsedFloat4, //2 fxaaTex, //3 fxaaTex, //4 fxaaTex, //5 rcpFrame, //6 notUsedFloat4, //7 rcpFrameOpt, //8 notUsedFloat4, //9 fxaaQualitySubpix, //10 fxaaQualityEdgeThreshold, //11 fxaaQualityEdgeThresholdMin, //12 notUsedFloat, //13 notUsedFloat, //14 notUsedFloat, //15 notUsedFloat //16 ); return output; } Am I passing a wrong value into the shader?

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• FileNameColumnName property, Flat File Source Adapter : SSIS Nugget

  - by jamiet

  I saw a question on MSDN’s SSIS forum the other day that went something like this: I’m loading data into a table from a flat file but I want to be able to store the name of that file as well. Is there a way of doing that? I don’t want to come across as disrespecting those who took the time to reply but there was a few answers along the lines of “loop over the files using a For Each, store the file name in a variable yadda yadda yadda” when in fact there is a much much simpler way of accomplishing this; it just happens to be a little hidden away as I shall now explain! The Flat File Source Adapter has a property called FileNameColumnName which for some reason it isn’t exposed through the Flat File Source editor, it is however exposed via the Advanced Properties: You’ll see in the screenshot above that I have set FileNameColumnName=“Filename” (it doesn’t matter what name you use, anything except a non-zero string will work). What this will do is create a new column in our dataflow called “Filename” that contains, unsurprisingly, the name of the file from which the row was sourced. All very simple. This is particularly useful if you are extracting data from multiple files using the MultiFlatFile Connection Manager as it allows you to differentiate between data from each of the files as you can see in the following screenshot: So there you have it, the FileNameColumnName property; a little known secret of SSIS. I hope it proves to be useful to someone out there. @Jamiet Share this post: email it! | bookmark it! | digg it! | reddit! | kick it! | live it!

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