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• nohup SBCL ubuntu couldn't read from standard input

  - by Jim

  On Ubuntu I compiled sbcl 1.0.35 with threading. I can happily use sbcl from the command line and my hunchentoot website works with threading but when I logout it's gone. When I attempt to nohup sbcl nohup ./src/runtime/sbcl --core output/sbcl.core I get (SB-IMPL::SIMPLE-STREAM-PERROR "couldn't read from ~S" # 9) I've attempted various combinations of redirecting the standard input to /dev/null or a file and using the script command line option but I don't quite get what is going on. How do I start sbcl from the command line on linux with nohup and keep my repl(website) running?

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• Exceptions using CruiseControl.NET

  - by Andy

  I recently updated to CC.NET 1.5 and I'm now getting some strange exceptions. On one project I get: - ThoughtWorks.CruiseControl.Core.CruiseControlException: Source control operation failed: svn: Can't create a character converter from native encoding to 'UTF-8' This happens when CC is checking a subversion repository for any mods. If I run the actual command line CC says is failing it works and returns an empty XML (there are no mods). Some other projects also fail to check mods with another "Source control operation failed" exception but no further info. Again the command is an "svn log" which when run from command line works ok. I'm using subversion 1.4.5 client side and my source repository exists on a separate box than my build server. Anyone got any ideas?

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• Executing commands containing space in bash

  - by Epitaph

  I have a file named cmd that contains a list of unix commands as follows: hostname pwd ls /tmp cat /etc/hostname ls -la ps -ef | grep java cat cmd I have another script that executes the commands in cmd as: IFS=$'\n' clear for cmds in `cat cmd` do if [ $cmds ] ; then $cmds; echo "****************************"; fi done The problem is that commands in cmd without spaces run fine, but those with spaces are not correctly interpreted by the script. Following is the output: patrick-laptop **************************** /home/patrick/bashFiles **************************** ./prog.sh: line 6: ls /tmp: No such file or directory **************************** ./prog.sh: line 6: cat /etc/hostname: No such file or directory **************************** ./prog.sh: line 6: ls -la: command not found **************************** ./prog.sh: line 6: ps -ef | grep java: command not found **************************** ./prog.sh: line 6: cat cmd: command not found **************************** What am I missing here?

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• Store value of os.system or os.popen

  - by chrissygormley

  Hello, I want to grep the error's out of a log file and save the value as an error. When I use: errors = os.system("cat log.txt | grep 'ERROR' | wc -l") I get the return code that the command worked or not. When I use: errors = os.popen("cat log.txt | grep 'ERROR' | wc -l") I get what the command is trying to do. When I run this in the command line I get 3 as thats how many errors there are. Can anyone suggest another way? Thanks

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• SqlDateTime overflow thrown by Typed DataSet Insert

  - by end-user

  I'm using a Typed DataSet with an Insert statement; I have a table that has a smalldatetime field defined to accept null values. When I insert from a .NET 2.0 FormView, I get a "SqlDateTime overflow. Must be between 1/1/1753 12:00:00 AM and 12/31/9999 11:59:59 PM." Now, I've read this post, and the parameter as sent to the class constructor is defined as global::System.Nullable<global::System.DateTime> DoB So, it looks like it should accept a Nullable obj. Additionally, the generated code is testing the value sent. if ((DoB.HasValue == true)) { command.Parameters[6].Value = ((System.DateTime)(DoB.Value)); } else { command.Parameters[6].Value = global::System.DBNull.Value; } Specifically, the error is occurring when generated SqlClient.SqlCommand.ExecuteScalar() runs: try { returnValue = command.ExecuteScalar(); } So, I guess my question is: how do I use a Typed DataSet to set a blank value (passed from a FormView on CommandName=Insert) to a null in a database?

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• fsutil hardlink doesn't work?

  - by Alix Axel

  I was looking for a way to create hard links under Windows and I found this page: http://technet.microsoft.com/en-us/library/cc788097.aspx To try it out, I created a file (1.txt) on the root of my C: drive with 100 lines of the following content: C:\1.txt (2.598 bytes): test test test test test Then I open the command prompt and type: fsutil hardlink create C:\2.txt C:\1.txt Success, 2.txt was created but when I go to see it's size it has exactly 2.598 bytes and also noticed some strange behaviours (as far as my understanding of hard links goes): If I delete 2.txt (the hard linked file) 1.txt is not deleted, and vice-versa. If I open 2.txt after I delete 1.txt (the original file) the content is still the same. How does the fsutil hardlink create command differs from the copy command? And how can I create a true hard link under Windows? I'm using Windows XP SP 3, and my file system is NTFS.

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• How to use MSBuild to create ClickOnce files that match those created by Visual Studio

  - by EasyTimer

  I am trying to use MSBuild in a TFS Build file to create click once files for my application. According to MSDN (http://msdn.microsoft.com/en-us/library/ms165431.aspx) it seems that the project file's click once settings should be used unless you override them with property arguments on the command line. However, even though I have specified (in VS) that some prerequisites should be bootstrapped in with the setup, they don't seem to get installed if I use the MSBuild command line to create the package, even though they do seem to get installed if I use Visual Studio to create the ClickOnce package. Please could someone advise me how to get my prerequisites to get installed via ClickOnce when the clickonce package is built using the MSBuild command line? For information, in Visual Studio, project properties, "Publish" tab, "Prerequisite" button, I have ticked "Create setup program to install prerequisite components", I have ticked my pre-requisites and I have specified "Download prerequisites from the component vendor's web site"

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• Execution of "mvn sonar:sonar" with no external access

  - by romaintaz

  Hello, I try to execute the mvn sonar:sonar command on a machine where Maven is configured to have no access to external repositories (in reality, this is not exactly the case, but it helps me to explain my problem). So currently, if I run this command, I get the following error: [ERROR] BUILD ERROR [INFO] ------------------------------------------------------------------------ [INFO] The plugin 'org.codehaus.mojo:sonar-maven-plugin' does not exist or no valid version could be found I think it means that I have some incorrect metadata in my local repository, as I have a [local repo]\org\codehaus\mojo\sonar-maven-plugin\1.0-beta-1 directory (with the JAR inside, of course). Have you any idea why my command is failing? tech infos: Maven 2.2.1, Java 1.6, Sonar 2.1.2

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• Getting ID of an instance newly launched with ec2-api-tools

  - by Jonik

  I'm launching an EC2 instance, by invoking ec2-run-instances from simple a bash script, and want to perform further operations on that instance (e.g. associate elastic IP), for which I need the instance id. The command is something like ec2-run-instances ami-dd8ea5a9 -K pk.pem -C cert.pem --region eu-west-1 -t c1.medium -n 1, and its output: RESERVATION r-b6ea58c1 696664755663 default INSTANCE i-945af9e3 ami-dd8ea5b9 pending 0 c1.medium 2010-04-15T10:47:56+0000 eu-west-1a aki-b02a01c4 ari-39c2e94d In this example, i-945af9e3 is the id I'm after. So, I'd need a simple way to parse the id from what the command returns - how would you go about doing it? My AWK is a little rusty... Feel free to use any tool available on a typical Linux box. (If there's a way to get it directly using EC2-API-tools, all the better. But afaik there's no EC2 command to e.g. return the id of the most recently launched instance.)

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• Package Manager Console For More Than Managing Packages

  - by Steve Michelotti

  Like most developers, I prefer to not have to pick up the mouse if I don’t have to. I use the Executor launcher for almost everything so it’s extremely rare for me to ever click the “Start” button in Windows. I also use shortcuts keys when I can so I don’t have to pick up the mouse. By now most people know that the Package Manager Console that comes with NuGet is PowerShell embedded inside of Visual Studio. It is based on its PowerConsole predecessor which was the first (that I’m aware of) to embed PowerShell inside of Visual Studio and give access to the Visual Studio automation DTE object. It does this through an inherent $dte variable that is automatically available and ready for use. This variable is also available inside of the NuGet Package Manager console. Adding a new class file to a Visual Studio project is one of those mundane tasks that should be easier. First I have to pick up the mouse. Then I have to right-click where I want it file to go and select “Add –> New Item…” or “Add –> Class…”   If you know the Ctrl+Shift+A shortcut, then you can avoid the mouse for adding a new item but you have to manually assign a shortcut for adding a new class. At this point it pops up a dialog just so I can enter the name of the class I want. Since this is one of the most common tasks developers do, I figure there has to be an easier way and a way that avoids picking up the mouse and popping up dialogs. This is where your embedded PowerShell prompt in Visual Studio comes in. The first thing you should do is to assign a keyboard shortcut so that you can get a PowerShell prompt (i.e., the Package Manager console) quickly without ever picking up the mouse. I assign “Ctrl+P, Ctrl+M” because “P + M” stands for “Package Manager” so it is easy to remember:   At this point I can type this command to add a new class: PM> $dte.ItemOperations.AddNewItem("Code\Class", "Foo.cs") which will result in the class being added: At this point I’ve satisfied my original goal of not having to pick up a mouse and not having the “Add New Item” dialog pop up. However, having to remember that $dte method call is not very user-friendly at all. The best thing to do is to make this a re-usable function that always loads when Visual Studio starts up. There is a $profile variable that you can use to figure out where that location is for your machine: PM> $profile C:\Users\steve.michelotti\Documents\WindowsPowerShell\NuGet_profile.ps1 If the NuGet_profile.ps1 file does not already exist, you can just create it yourself and place it in the directory. Now you can put a function inside like this: 1: function addClass($className) 2: { 3: if ($className.EndsWith(".cs") -eq $false) { 4: $className = $className + ".cs" 5: } 6: 7: $dte.ItemOperations.AddNewItem("Code\Class", $className) 8: } Since it’s in the NuGet_profile.ps1 file, this function will automatically always be available for me after starting Visual Studio. Now I can simply do this: PM> addClass Foo At this point, we have a *very* nice developer experience. All I did to add a new class was: “Ctrl-P, Ctrl-M”, then “addClass Foo”. No mouse, no pop up dialogs, no complex commands to remember. In fact, PowerShell gives you auto-completion as well. If I type “addc” followed by [TAB], then intellisense pops up: You can see my custom function appear in intellisense above. Now I can type the next letter “c” and [TAB] to auto-complete the command. And if that’s still too many key strokes for you, then you can create your own PowerShell custom alias for your function like this: PM> Set-Alias addc addClass PM> addc Foo While all this is very useful, I did run into some issues which prompted me to make even further customization. This command will add the new class file to the current active directory. Depending on your context, this may not be what you want. For example, by convention all view model objects go in the “Models” folder in an MVC project. So if the current document is in the Controllers folder, it will add your class to that folder which is not what you want. You want it to always add it to the “Models” folder if you are adding a new model in an MVC project. For this situation, I added a new function called “addModel” which looks like this: 1: function addModel($className) 2: { 3: if ($className.EndsWith(".cs") -eq $false) { 4: $className = $className + ".cs" 5: } 6: 7: $modelsDir = $dte.ActiveSolutionProjects[0].UniqueName.Replace(".csproj", "") + "\Models" 8: $dte.Windows.Item([EnvDTE.Constants]::vsWindowKindSolutionExplorer).Activate() 9: $dte.ActiveWindow.Object.GetItem($modelsDir).Select([EnvDTE.vsUISelectionType]::vsUISelectionTypeSelect) 10: $dte.ItemOperations.AddNewItem("Code\Class", $className) 11: } First I figure out the path to the Models directory on line #7. Then I activate the Solution Explorer window on line #8. Then I make sure the Models directory is selected so that my context is correct when I add the new class and it will be added to the Models directory as desired. These are just a couple of examples for things you can do with the PowerShell prompt that you have available in the Package Manager console. As developers we spend so much time in Visual Studio, why would you not customize it so that you can work in whatever way you want to work?! The next time you’re not happy about the way Visual Studio makes you do a particular task – automate it! The sky is the limit.

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• bash script to check running process

  - by elasticsecurity

  I wrote a bash-script to check if a process is running. It doesn't work since the ps command always returns exit code 1. When I run the ps command from the command-line, the $? is correctly set, but within the script it is always 1. Any idea? #!/bin/bash SERVICE=$1 ps -a | grep -v grep | grep $1 > /dev/null result=$? echo "exit code: ${result}" if [ "${result}" -eq "0" ] ; then echo "`date`: $SERVICE service running, everything is fine" else echo "`date`: $SERVICE is not running" fi Bash version: GNU bash, version 3.2.25(1)-release (x86_64-redhat-linux-gnu)

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• How do I automatically rebuild the Sphinx index under django-sphinx?

  - by Apreche

  I just setup django-sphinx, and it is working beautifully. I am now able to search my model and get amazing results. The one problem is that I have to build the index by hand using the indexer command. That means every time I add new content, I have to manually hit the command line to rebuild the search index. That is just not acceptable. I could make a cron job that automatically runs the indexer command every so often, but that's far from optimal. New data won't be indexed until the cron runs again. In addition, the indexer will run unnecessarily most times as my site doesn't have data being added very often. How do I set it up so that the Sphinx index will automatically rebuild itself whenever data is added to or modified in a searchable django model?

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• java OutofMemoryError

  - by dqm

  I am running the following command on unix box. java -Xms3800m -Xmx3800m org.apache.xalan.xslt.Process -out Cust.txt -in test13l.xml -xsl CustDetails.xsl It is a java command, which calls Xalan processor to parse through the xml file (test131.xml) using the xsl stylesheet (CustDetails.xsl) and returns Cust.txt. The command works fine and the output is generated. It takes 12 minutes to process an xml file size of 1.1 GB. It takes 22 minutes to process a file size of 1.44 GB. However, when I try to process a file size of 1.66 GB, it errors out with the following message: (Location of error unknown)XSLT Error (java.lang.OutOfMemoryError): null I have increased the java heap size to 3800 not sure what I can do more. Many thanks for your help.

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• Pass elements of a list as arguments to a function in python

  - by Wilduck

  I'm building a simple interpreter in python and I'm having trouble handling differing numbers of arguments to my functions. My current method is to get a list of the commands/arguments as follows. args = str(raw_input('>> ')).split() com = args.pop(0) Then to execute com, I check to see if it is in my dictionary of command- code mappings and if it is I call the function I have stored there. For a command with no arguments, this would look like: commands[com]() However, if a command had multiple arguments, I would want this: commands[com](args[0],args[1]) Is there some trick where I could pass some (or all) of the elements of my arg list to the function that I'm trying to call? Or is there a better way of implementing this without having to use python's cmd class?

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• DOS Batch script loop

  - by Tom J Nowell

  I need to execute a command 100-200 times, so far my research indicates that I would either have to copy paste 100 copies of this command, OR use a FOR loop, but the for loop expects a list of items, hence I would need 200 files to operate on, or a list of 200 items, hence defeating the point. I would really not have to write a C program and go through the length of documenting why I had to write another program to execute my program for test purposes. Modification of my program itself is also no an option. So, given a command how would I execute it times via a DOS batch script?

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• Installing Sass on Gentoo

  - by iyrag

  I've been trying to install Sass on Gentoo, but it hasn't been going too well. Unfortunately, the latest version of Sass in portage is 3.1.21. What I want to use Sass for requires at least Sass 3.2, which is available through rubygems. What I've tried: emerge dev-ruby/sass (installs an old version) gem install sass The second command appears to install the Sass gem. However, I do not use Rails or Ruby in any other aspect apart from Sass, so the gem appears useless to me. In addition, I do not know where gems are installed to or how to use them (I'm a ruby noob.) All I want to do is call sass from the command line. Are there any ways to obtain an up-to-date version of Sass which I can just use from the command line? Cheers.

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• Does Process.StartInfo.Arguments support a UTF-8 string?

  - by Patrick Klug

  Can you use a UTF-8 string as the Arguments for a StartInfo? I am trying to pass a UTF-8 (in this case a Japanese string) to an application as a console argument. Something like this (this is just an example! (cmd.exe would be a custom app)) var process = new System.Diagnostics.Process(); process.StartInfo.Arguments = "/K \"echo ????????\""; process.StartInfo.FileName = "cmd.exe"; process.StartInfo.UseShellExecute = true; process.Start(); process.WaitForExit(); Executing this seems to loose the UTF-8 string and all the target application sees is "echo ?????????" When executing this command directly on the command line (by pasting the arguments) the target application receives the string correctly even though the command line itself doesn't seem to display it correctly. Do I need to do anything special to enable UTF-8 support in the arguments or is this just not supported?

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• How to convert thousands of PDF files to a single Postscript file in a specified order

  - by tggagne

  I've discovered multiple options for convert a few to serveral PDFs into Postscript, but many are command-line programs with command-line limitations (this application lives on .NET). Our application generates tens-of-thousands of PDFs that we need to send to a printer, except BEFORE the Postscript is printed we need to edit the Postscript to insert print command instructions (duplex, tray-pulls, highlight color, etc.) I think a perfect solution might allow us to write the PDFs to a stream, and simultaneously allow us to read the output stream so we may edit the Postscript before writing it to a file. Of course, if I must create the file first containing all 10,000 PDFs and edit it in an additional pass, I'm OK with that, too. I should mention that speed is important. I need to print 10,000 at a time, but need to keep the printers busy 24-hours/day.

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• PATH and CLASSPATH in Windows7 7 / Eclipse

  - by Richard Knop

  So I would like to set PATH and CLASSPATH system variables so I can use javac and java commands in the command line. I can just compile and run java programs in eclipse but I would also like to be able to run them through command line. This is where I have Java installed: C:\Program Files (x86)\Java jdk1.6.0_20 jre6 And this is where eclipse stores my Java projects: D:\java-projects HelloWorld bin HelloWorld.class src HelloWorld.java I have set up the PATH and CLASSPATH variables like this: PATH: C:\Program Files (x86)\Java\jdk1.6.0_20\bin CLASSPATH: D:\java-projects But it doesn't work. When I write: java HelloWorld Or: java HelloWorld.class I get error like this: Exception in thread “main” java.lang.NoClassDefFoundError: HelloWorld The error is longer, that's just the first line. How can I fix this? I'm mainly interested to be able to run compiled .class programs from the command line, I can do compiling in the eclipse.

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• Cap deploy doesn't work all the sudden; something to do with FactoryGirl and assets

  - by Jason Swett

  I've been cap deploying my app all throughout it development, and this last time I tried to deploy it, it didn't work. Here's what happened: * executing `deploy:assets:precompile' * executing "cd /var/www/oneteam/releases/20121006153136 && bundle exec rake RAILS_ENV=production RAILS_GROUPS=assets assets:precompile" servers: ["electricsasquatch.com"] [electricsasquatch.com] executing command ** [out :: electricsasquatch.com] rake aborted! ** [out :: electricsasquatch.com] uninitialized constant OneTeam::Application::FactoryGirl ** [out :: electricsasquatch.com] ** [out :: electricsasquatch.com] (See full trace by running task with --trace) It looks like it failed on the deploy:assets:precompile command. I don't get why that command would have tried to do anything with FactoryGirl, though. Any ideas?

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• Serial port determinism

  - by Matt Green

  This seems like a simple question, but it is difficult to search for. I need to interface with a device over the serial port. In the event my program (or another) does not finish writing a command to the device, how do I ensure the next run of the program can successfully send a command? Example: The foo program runs and begins writing "A_VERY_LONG_COMMAND" The user terminates the program, but the program has only written, "A_VERY" The user runs the program again, and the command is resent. Except, the device sees "A_VERYA_VERY_LONG_COMMAND," which isn't what we want. Is there any way to make this more deterministic? Serial port programming feels very out-of-control due to issues like this.

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• How to verify mail origin?

  - by MrZombie

  I wish to code a little service where I will be able to send an e-mail to a specific address used by my server to send specific commands to my server. I'll check against a list of permitted e-mail addresses to make sure no one unauthorized will send a command to the server, but how do I make sure that, say, an e-mail sent by "[email protected]" really comes from "thezombie.net"? I thought about checking the header for the original e-mail server's IP and pinging the domain to make sure it is the same, but would that be reliable? Example: Server receives a command from [email protected] [email protected] is authorized, proceed with checks Server checks "thezombie.net"'s IP from the header: W.X.Y.Z Server pings "thezombie.net" for it's IP: A.B.C.D The IPs do not correspond, do not process command Is there any better way to do that?

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• How can I redirect the output of Perl's system() to a filehandle?

  - by syker

  With the open command in Perl, you can use a filehandle. However I have trouble getting back the exit code with the open command in Perl. With the system command in Perl, I can get back the exit code of the program I'm running. However I want to just redirect the STDOUT to some filehandle (no stderr). My stdout is going to be a line-by-line output of key-value pairs that I want to insert into a mao in perl. That is why I want to redirect only my stdout from my Java program in perl. Is that possible? Note: If I get errors, the errors get printed to stderr. One possibility is to check if anything gets printed to stderr so that I can quite the Perl script.

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• CommandManager Executed Events don't fire for custom ICommands

  - by Andre Luus

  The WPF CommandManager allows you to do the following (pseudo-ish-code): <Button Name="SomeButton" Command="{Binding Path=ViewModelCommand}"/> And in the code-behind: private void InitCommandEvents() { CommandManager.AddExecutedEventHandler(this.SomeButton, SomeEventHandler); } The SomeEventHandler never gets called. To me this didn't seem like something very wrong to try and do, but if you consider what happens inside CommandManager.AddExecutedEventHandler, it makes sense why it doesn't. Add to that the fact that the documentation clearly states that the CommandManager only works with RoutedCommands. Nonetheless, this had me very frustrated for a while and led me to this question: What would you suggest is the best workaround for the fact that the CommandManager does not support custom ICommands? Especially if you want to add behavior around the execution of a command? For now, I fire the command manually in code behind from the button click event.

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• Best way to implement a Rest API with PHP on Wamp web server

  - by DomingoSL

  Hello, i own a web server running windows (WAMP). I want to know the best way to implement a Rest API (a very simple one) in order to let a user do something. Diagram flow: I have programming skills, in fact, i developed some time ago a web server in VB6 who process the querys and when it find the command (http:/serverIP/webform.php?cmd=run&item=any) it do something, but know i really want to develop a solution using the WAMP server. Some people consider the solution of executing a exe when a command is detected a bad solution for security issues, but this specific proyect i have is for the use of only some people (trusted people) who dont have intentions of hacking the server. So, what do you think? Remember: Its not a public API, its for some people and some programs who will use the API Its a very simple one, only one command using POST or GET. Thanks

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