I was looking through the folder for an application I am working on and noticed the &quot;ipch&quot; folder, for my solution which has two small projects it weighs in at about 90mb+ in size.

I have found an article discussing the use for the files and was wondering if they were safe to delete? I would like to keep the applications footprint as small as possible. If I were to delete the folder will the application remain in a safe and stable state?

[Pre-Compiled Headers][1]


  [1]: http://blogs.msdn.com/vcblog/archive/2010/01/26/precompiled-header-files-in-visual-studio-2010.aspx

Is it safe to delete the &quot;ipch&quot; folder - Precompiled headers?

I have an directory, which has a lot of subdirectories. those subdirs sometimes even have subdirs. there are source files inside.

How could I use genstrings to go across all these dirs and subdirs?

Let&#39;s say I cd to my root dir in Terminal, and then I would type this:

    genstrings -o en.lproj *.m

How could I tell it now to look into all these directories? Or would I have to add a lot of relative paths comma separated? how?

How to use genstrings across multiple directories?

Is there a command line I can run to determine what version of Mono I am running on Linux?  I am using Ubuntu and I it is command line only (no X Windows installed).

Determine what version of Mono is running on linux?

<p>Is there a command line I can run to determine what version of Mono I am running on Linux?  I am using Ubuntu and I it is command line only (no X Windows installed).</p>


I would like to define some aliases in fish. Apparently it should be possible to define them in 

    ~/.config/fish/functions

but they don&#39;t get auto loaded when I restart the shell. Any ideas?


Define an alias in fish shell

I would like to join the result of `ls -1` into one line and delimit it with whatever i want.

Are there any standard Linux commands I can use to achieve this?

How to join multiple lines of file names into one with custom delimiter?

I am trying to use [time()](http://en.cppreference.com/w/cpp/chrono/c/time) to measure various points of my program.

What I don&#39;t understand is why the values in the before and after are the same?  I understand this is not the best way to profile my program, I just want to see how long something take.  

    printf(&quot;**MyProgram::before time= %ld\n&quot;, time(NULL));
    
    doSomthing();
    doSomthingLong();
    
    printf(&quot;**MyProgram::after time= %ld\n&quot;, time(NULL));

I have tried:

    struct timeval diff, startTV, endTV;

    gettimeofday(&amp;startTV, NULL); 

    doSomething();
    doSomethingLong();

    gettimeofday(&amp;endTV, NULL); 

    timersub(&amp;endTV, &amp;startTV, &amp;diff);
    
    printf(&quot;**time taken = %ld %ld\n&quot;, diff.tv_sec, diff.tv_usec);

How do I read a result of `**time taken = 0 26339`?  Does that mean 26,339 nanoseconds = 26.3 msec?

What about `**time taken = 4 45025`, does that mean 4 seconds and 25 msec?

Easily measure elapsed time

What characters are allowed in Linux environment variable names? My cursory search of man pages and the web did only produce information about how to work with variables, but not which names are allowed.

I have a Java program that requires an defined environment variable containing a dot, like `com.example.fancyproperty`. With Windows I can set that variable, but I had no luck setting it in linux (tried in SuSE and Ubuntu). Is that variable name even allowed?

Allowed characters in Linux environment variable names

Linux newbie question I guess..

How can I find out where gem installs the gems on my Ubuntu 10 system? I want to read gem sourcecode and perhaps change things up a bit.



Where are my ruby gems?

What are the best or most useful configurations for logging with NLog? (These can be simple or complex, as long as they&#39;re useful.) 

I&#39;m thinking of examples like automatically rolling over log files at a certain size, changing the layout (log message) whether or not there is an exception, escalating the log level once an error has occurred, etc.

Here are some links:

* [NLog Demo][2]
* [Examples in the source][3]

  [2]: https://github.com/jkowalski/NLog/blob/master/examples/NLogDemo/NLog.config
  [3]: http://github.com/jkowalski/NLog/tree/master/examples/targets/Configuration%20File

Most useful NLog configurations

I would like to run an external command line program from my Mono/.NET app. 
For example, I would like to run **mencoder**. Is it possible:

   1. To get the command line shell output, and write it on my text box?
   2. To get the numerical value to show a progress bar with time elapsed?

Process.start: how to get the output?

I&#39;m making a simple REST client to use in my C# applications. In .net on Windows It works great with http:// and https:// connections. In mono 2.6.7 (Also tested with 2.8 with the same results) on Ubuntu 10.10 only http:// works. https:// connections throw up this exception on the request.GetResponse() method:

    Unhandled Exception: System.Net.WebException: Error getting response stream (Write: The authentication or decryption has failed.): SendFailure ---&gt; System.IO.IOException: The authentication or decryption has failed. ---&gt; Mono.Security.Protocol.Tls.TlsException: Invalid certificate received from server. Error code: 0xffffffff800b010a
      at Mono.Security.Protocol.Tls.Handshake.Client.TlsServerCertificate.validateCertificates (Mono.Security.X509.X509CertificateCollection certificates) [0x00000] in &lt;filename unknown&gt;:0 
      at Mono.Security.Protocol.Tls.Handshake.Client.TlsServerCertificate.ProcessAsTls1 () [0x00000] in &lt;filename unknown&gt;:0 
      at Mono.Security.Protocol.Tls.Handshake.HandshakeMessage.Process () [0x00000] in &lt;filename unknown&gt;:0 
      at (wrapper remoting-invoke-with-check) Mono.Security.Protocol.Tls.Handshake.HandshakeMessage:Process ()
      at Mono.Security.Protocol.Tls.ClientRecordProtocol.ProcessHandshakeMessage (Mono.Security.Protocol.Tls.TlsStream handMsg) [0x00000] in &lt;filename unknown&gt;:0 
      at Mono.Security.Protocol.Tls.RecordProtocol.InternalReceiveRecordCallback (IAsyncResult asyncResult) [0x00000] in &lt;filename unknown&gt;:0 
      --- End of inner exception stack trace ---
      at Mono.Security.Protocol.Tls.SslStreamBase.AsyncHandshakeCallback (IAsyncResult asyncResult) [0x00000] in &lt;filename unknown&gt;:0 
      --- End of inner exception stack trace ---
      at System.Net.HttpWebRequest.EndGetResponse (IAsyncResult asyncResult) [0x00000] in &lt;filename unknown&gt;:0 
      at System.Net.HttpWebRequest.GetResponse () [0x00000] in &lt;filename unknown&gt;:0 

I haven&#39;t been able to find any way to fix this. Anyone have any idea why this is happening and how to fix it?

Again, this only fails in Mono, .Net doesn&#39;t seem to have any problem establishing a connection.

here&#39;s the calling code:

    public JToken DoRequest(string path, params string[] parameters) {
        if(!path.StartsWith(&quot;/&quot;)) {
            path = &quot;/&quot; + path;
        }
        string fullUrl = url + path + ToQueryString(parameters);
        			
        if(DebugUrls) Console.WriteLine(&quot;Requesting: {0}&quot;, fullUrl);
        
        WebRequest request = HttpWebRequest.CreateDefault(new Uri(fullUrl));
        using(WebResponse response = request.GetResponse())
        using(Stream responseStream = response.GetResponseStream()) {
            return ReadResponse(responseStream);
        }
    }

Mono https webrequest fails with &quot;The authentication or decryption has failed&quot;

I&#39;m new to this, and don&#39;t know where to start.

I want to compile a Visual Studio C# project with Mono on Linux (by command line).

The main.cs file includes these references:

    using System;
    using System.IO;
    using System.Collections.Generic;
    using System.ComponentModel;
    using System.Diagnostics;
    using System.Drawing;
    using System.Drawing.Imaging;
    using System.Net;
    using System.Text;
    using System.Text.RegularExpressions;
    using System.Xml;
    using iTextSharp.text;
    using iTextSharp.text.pdf;

I have no idea whether I need to note the references to the compiler, or whether it will pull them in itself, whether it will know where to look for them or not. I&#39;ve never done this before. But I just need to compile this project.

Thank you!

How to compile a Visual Studio C# Project with Mono

&lt;sub&gt;*I tried asking this on the gallio-users list, but the question failed to appear (Google Groups says the post was successful). I suppose the list might be moderated by someone who does not read his email very often :-) Seeing as SO has tags for both Gallio and MbUnit, I thought it was worth asking here.*&lt;/sub&gt;

I see the `MbUnit` front page mentions that they are keen on maintaining Mono-compatibility. There is also a &gt;1-year [old post on gallio-users][1] saying that it does not work under Linux

The project I want to test compiles fine under Mono if I remove the `Parallelizable` attribute. I can launch the `Gallio` control panel under Linux, but not Icarus or Echo.

Is there any way of running `MbUnit` tests under Linux? Something that uses the command line (like `Gallio.Echo`) and does not need Monodevelop would be especially helpful. 


  [1]: https://groups.google.com/group/gallio-user/browse_thread/thread/6cd88aef65f4d3c2

Content Type	Original Author	Original Content on Stackoverflow
Question	emalamisura	View Question on Stackoverflow
Solution 1 - Linux	Alex Martelli	View Answer on Stackoverflow

Determine what version of Mono is running on linux?

Linux Problem Overview

Linux Solutions

Solution 1 - Linux

How to use genstrings across multiple directories?

Is it safe to delete the "ipch" folder - Precompiled headers?

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