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  • dhclient and dhcpcd the real difference

    - by rubixibuc
    I can't figure out the difference from just the man pages. I can see what is a daemon and one is a client, but what does that mean practically when using the commands? Also what is the difference between the client and daemon in this case, not just the terms (client and daemon) but functionally wise? EDIT: How are the tasks divided, if the client updates the information on the client, what is the purpose of the daemon. I'm talking about the client daemon in this case dhcpcd not dhcpd. Both come installed by default with some versions of Linux and seem to share the duties of the dhcp client. NAME dhcpcd - DHCP client daemon Name dhclient - Dynamic Host Configuration Protocol Client

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  • Diff -b and -w difference

    - by dotancohen
    From the diff manpage: -b, --ignore-space-change ignore changes in the amount of white space -w, --ignore-all-space ignore all white space From this, I infer that the difference between the -b and -w options must be that -b is sensitive to the type of whitespace (tabs vs. spaces). However, that does not seem to be the case: $ diff 1.txt 2.txt 1,3c1,3 < Four spaces, changed to one tab < Eight Spaces, changed to two tabs < Four spaces, changed to two spaces --- > Four spaces, changed to one tab > Eight Spaces, changed to two tabs > Four spaces, changed to two spaces $ diff -b 1.txt 2.txt $ diff -w 1.txt 2.txt $ So, what is the difference between the -b and -w options? Tested with diffutils 3.2 on Kubuntu Linux 13.04.

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  • Export to excel - COMMA issue

    - by 6242Y
    I want to put a string in an excel sheet from my Export to excel function. However my string is as follows: string : Red, red wine Go to my head Make me forget that I Still need and on my excel I get unexpected results , column change after comma and also column change when there is no full stop in front of an UPPER CASE alphabet. The Upper case alphabets (without a full stop before them) are also causing this (Go , Make . Still) How can I solve this issue ? I tried removing the spaces after the comma as var desc = ""; if (o.Description.Contains(',')) { var trimmedSplits = new List<string>(); var splits = o.Description.Split(','); foreach (var stringBits in splits) { desc = desc + stringBits.Trim() + ","; } desc = desc.Remove(desc.Length - 1); } dtRow[(int)ProductRangeExportToExcel.Description] = desc;

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  • Average Difference and Direction Between Values in Excel with Blanks

    - by 114
    I have a sheet that looks something like this: Sheet 1 1 2 3 4 5 6 7 8 9 10 11 1 6 2 3 5 3 4 2 4 9 4 5 6 4 6 6 7 5 3 3 3 10 8 4 8 8 9 4 11 12 12 6 10 11 8 5 5 4 9 4 7 6 What I would like to be able to do is find the average difference and direction between values in each column. For example, the first 4 rows would look like: Average Difference # + Movements # -Movements 1 2 2 1 0 3 4 (2+5+5)/3 2 1 Blanks represent N/A values due to insufficient information, and differences are calculated successively i.e. col2-col1, col3-col2, col4-col3 If I just take the differences and make a duplicate table with the formula =C2-B2 copied across issues arise whenever there is a blank space between two values or at the beginning of the row. Is there an easy way to fix this or another way to do this that I might be missing?

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  • ReplaceBetweenTags function with delegate to describe transformation

    - by Michael Freidgeim
    I've created a function that allow to replace content between XML tags with data, that depend on original content within tag, in particular to MAsk credit card number.The function uses MidBetween extension from My StringHelper class /// <summary> /// /// </summary> /// <param name="thisString"></param> /// <param name="openTag"></param> /// <param name="closeTag"></param> /// <param name="transform"></param> /// <returns></returns> /// <example> /// // mask <AccountNumber>XXXXX4488</AccountNumber> ///requestAsString  = requestAsString.ReplaceBetweenTags("<AccountNumber>", "</AccountNumber>", CreditCard.MaskedCardNumber); ///mask cvv ///requestAsString = requestAsString.ReplaceBetweenTags("<FieldName>CC::VerificationCode</FieldName><FieldValue>", "</FieldValue>", cvv=>"XXX"); /// </example> public static string ReplaceBetweenTags(this string thisString, string openTag, string closeTag, Func<string, string> transform) { //See also http://stackoverflow.com/questions/1359412/c-sharp-remove-text-in-between-delimiters-in-a-string-regex string sRet = thisString; string between = thisString.MidBetween(openTag, closeTag, true); if (!String.IsNullOrEmpty(between)) sRet=thisString.Replace(openTag + between + closeTag, openTag + transform(between) + closeTag); return sRet; } public static string ReplaceBetweenTags(this string thisString, string openTag, string closeTag, string newValue) { //See also http://stackoverflow.com/questions/1359412/c-sharp-remove-text-in-between-delimiters-in-a-string-regex string sRet = thisString; string between = thisString.MidBetween(openTag, closeTag, true); if (!String.IsNullOrEmpty(between)) sRet = thisString.Replace(openTag + between + closeTag, openTag + newValue + closeTag); return sRet; }

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  • Asp.net mvc 2 .net 4.0 error when View model type is Tuple with more than 4 items

    - by Bojan
    When I create strongly typed View in Asp.net mvc 2, .net 4.0 with model type Tuple I get error when Tuple have more than 4 items example 1: type of view is Tuple<string, string, string, string> (4-tuple) and everything works fine view: <%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/WebUI.Master" Inherits="System.Web.Mvc.ViewPage<Tuple<string, string, string, string>>" %> controller: var tuple = Tuple.Create("a", "b", "c", "d"); return View(tuple); example 2: type of view is Tuple<string, string, string, string, string> (5-tuple) and I have this error: Compiler Error Message: CS1003: Syntax error, '>' expected view: <%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/WebUI.Master" Inherits="System.Web.Mvc.ViewPage<Tuple<string, string, string, string, string>>" %> controller: var tuple = Tuple.Create("a", "b", "c", "d", "e"); return View(tuple); example 3 if my view model is of type dynamic I can use both 4-tuple and 5-tuple and there is no error on page view: <%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/WebUI.Master" Inherits="System.Web.Mvc.ViewPage<dynamic>" %> controller: dynamic model = new ExpandoObject(); model.tuple = Tuple.Create("a", "b", "c", "d"); return View(model); or view: <%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/WebUI.Master" Inherits="System.Web.Mvc.ViewPage<dynamic>" %> controller: dynamic model = new ExpandoObject(); model.tuple = Tuple.Create("a", "b", "c", "d", "e"); return View(model); Even if I have something like Tuple<string, Tuple<string, string, string>, string> 3-tuple and one of the items is also a tuple and sum of items in all tuples is more than 4 I get the same error, Tuple<string, Tuple<string, string>, string> works fine

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  • Calculate year for end date: PostgreSQL

    - by Dave Jarvis
    Background Users can pick dates as shown in the following screen shot: Any starting month/day and ending month/day combinations are valid, such as: Mar 22 to Jun 22 Dec 1 to Feb 28 The second combination is difficult (I call it the "tricky date scenario") because the year for the ending month/day is before the year for the starting month/day. That is to say, for the year 1900 (also shown selected in the screen shot above), the full dates would be: Dec 22, 1900 to Feb 28, 1901 Dec 22, 1901 to Feb 28, 1902 ... Dec 22, 2007 to Feb 28, 2008 Dec 22, 2008 to Feb 28, 2009 Problem Writing a SQL statement that selects values from a table with dates that fall between the start month/day and end month/day, regardless of how the start and end days are selected. In other words, this is a year wrapping problem. Inputs The query receives as parameters: Year1, Year2: The full range of years, independent of month/day combination. Month1, Day1: The starting day within the year to gather data. Month2, Day2: The ending day within the year (or the next year) to gather data. Previous Attempt Consider the following MySQL code (that worked): end_year = start_year + greatest( -1 * sign( datediff( date( concat_ws('-', year, end_month, end_day ) ), date( concat_ws('-', year, start_month, start_day ) ) ) ), 0 ) How it works, with respect to the tricky date scenario: Create two dates in the current year. The first date is Dec 22, 1900 and the second date is Feb 28, 1900. Count the difference, in days, between the two dates. If the result is negative, it means the year for the second date must be incremented by 1. In this case: Add 1 to the current year. Create a new end date: Feb 28, 1901. Check to see if the date range for the data falls between the start and calculated end date. If the result is positive, the dates have been provided in chronological order and nothing special needs to be done. This worked in MySQL because the difference in dates would be positive or negative. In PostgreSQL, the equivalent functionality always returns a positive number, regardless of their relative chronological order. Question How should the following (broken) code be rewritten for PostgreSQL to take into consideration the relative chronological order of the starting and ending month/day pairs (with respect to an annual temporal displacement)? SELECT m.amount FROM measurement m WHERE (extract(MONTH FROM m.taken) >= month1 AND extract(DAY FROM m.taken) >= day1) AND (extract(MONTH FROM m.taken) <= month2 AND extract(DAY FROM m.taken) <= day2) Any thoughts, comments, or questions? (The dates are pre-parsed into MM/DD format in PHP. My preference is for a pure PostgreSQL solution, but I am open to suggestions on what might make the problem simpler using PHP.) Versions PostgreSQL 8.4.4 and PHP 5.2.10

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  • Thread vs async execution. What's different?

    - by Eonil
    I believed any kind of asynchronous execution makes a thread in invisible area. But if so, Async codes does not offer any performance gain than threaded codes. But I can't understand why so many developers are making many features async form. Could you explain about difference and cost of them?

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  • C# compare algorithms

    - by public static
    Hi, Are there any open source algorithms in c# that solve the problem of creating a difference between two text files? It would be super cool if it had some way of highlighting what exact areas where changed in the text document also.

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  • ASP.NET List Control

    - by Ricardo Peres
    Today I developed a simple control for generating lists in ASP.NET, something that the base class library does not contain; it allows for nested lists where the list item types and images can be configured on a list by list basis. Since it was a great fun to develop, I'd like to share it here. Here is the code: [ParseChildren(true)] [PersistChildren(false)] public class List: WebControl { public List(): base("ul") { this.Items = new List(); this.ListStyleType = ListStyleType.Auto; this.ListStyleImageUrl = String.Empty; this.CommonCssClass = String.Empty; this.ContainerCssClass = String.Empty; } [DefaultValue(ListStyleType.Auto)] public ListStyleType ListStyleType { get; set; } [DefaultValue("")] [UrlProperty("*.png;*.gif;*.jpg")] public String ListStyleImageUrl { get; set; } [DefaultValue("")] [CssClassProperty] public String CommonCssClass { get; set; } [DefaultValue("")] [CssClassProperty] public String ContainerCssClass { get; set; } [Browsable(false)] [PersistenceModeAttribute(PersistenceMode.InnerProperty)] public List Items { private set; get; } protected override void Render(HtmlTextWriter writer) { String cssClass = String.Join(" ", new String [] { this.CssClass, this.ContainerCssClass }); if (cssClass.Trim().Length != 0) { this.CssClass = cssClass; } if (String.IsNullOrEmpty(this.ListStyleImageUrl) == false) { this.Style[ HtmlTextWriterStyle.ListStyleImage ] = String.Format("url('{0}')", this.ResolveClientUrl(this.ListStyleImageUrl)); } if (this.ListStyleType != ListStyleType.Auto) { switch (this.ListStyleType) { case ListStyleType.Circle: case ListStyleType.Decimal: case ListStyleType.Disc: case ListStyleType.None: case ListStyleType.Square: this.Style [ HtmlTextWriterStyle.ListStyleType ] = this.ListStyleType.ToString().ToLower(); break; case ListStyleType.LowerAlpha: this.Style [ HtmlTextWriterStyle.ListStyleType ] = "lower-alpha"; break; case ListStyleType.LowerRoman: this.Style [ HtmlTextWriterStyle.ListStyleType ] = "lower-roman"; break; case ListStyleType.UpperAlpha: this.Style [ HtmlTextWriterStyle.ListStyleType ] = "upper-alpha"; break; case ListStyleType.UpperRoman: this.Style [ HtmlTextWriterStyle.ListStyleType ] = "upper-roman"; break; } } base.Render(writer); } protected override void RenderChildren(HtmlTextWriter writer) { foreach (ListItem item in this.Items) { this.writeItem(item, this, 0); } base.RenderChildren(writer); } private void writeItem(ListItem item, Control control, Int32 depth) { HtmlGenericControl li = new HtmlGenericControl("li"); control.Controls.Add(li); if (String.IsNullOrEmpty(this.CommonCssClass) == false) { String cssClass = String.Join(" ", new String [] { this.CommonCssClass, this.CommonCssClass + depth }); li.Attributes [ "class" ] = cssClass; } foreach (String key in item.Attributes.Keys) { li.Attributes[key] = item.Attributes [ key ]; } li.InnerText = item.Text; if (item.ChildItems.Count != 0) { HtmlGenericControl ul = new HtmlGenericControl("ul"); li.Controls.Add(ul); if (String.IsNullOrEmpty(this.ContainerCssClass) == false) { ul.Attributes["class"] = this.ContainerCssClass; } if ((item.ListStyleType != ListStyleType.Auto) || (String.IsNullOrEmpty(item.ListStyleImageUrl) == false)) { if (String.IsNullOrEmpty(item.ListStyleImageUrl) == false) { ul.Style[HtmlTextWriterStyle.ListStyleImage] = String.Format("url('{0}');", this.ResolveClientUrl(item.ListStyleImageUrl)); } if (item.ListStyleType != ListStyleType.Auto) { switch (this.ListStyleType) { case ListStyleType.Circle: case ListStyleType.Decimal: case ListStyleType.Disc: case ListStyleType.None: case ListStyleType.Square: ul.Style[ HtmlTextWriterStyle.ListStyleType ] = item.ListStyleType.ToString().ToLower(); break; case ListStyleType.LowerAlpha: ul.Style [ HtmlTextWriterStyle.ListStyleType ] = "lower-alpha"; break; case ListStyleType.LowerRoman: ul.Style [ HtmlTextWriterStyle.ListStyleType ] = "lower-roman"; break; case ListStyleType.UpperAlpha: ul.Style [ HtmlTextWriterStyle.ListStyleType ] = "upper-alpha"; break; case ListStyleType.UpperRoman: ul.Style [ HtmlTextWriterStyle.ListStyleType ] = "upper-roman"; break; } } } foreach (ListItem childItem in item.ChildItems) { this.writeItem(childItem, ul, depth + 1); } } } } [Serializable] [ParseChildren(true, "ChildItems")] public class ListItem: IAttributeAccessor { public ListItem() { this.ChildItems = new List(); this.Attributes = new Dictionary(); this.Text = String.Empty; this.Value = String.Empty; this.ListStyleType = ListStyleType.Auto; this.ListStyleImageUrl = String.Empty; } [DefaultValue(ListStyleType.Auto)] public ListStyleType ListStyleType { get; set; } [DefaultValue("")] [UrlProperty("*.png;*.gif;*.jpg")] public String ListStyleImageUrl { get; set; } [DefaultValue("")] public String Text { get; set; } [DefaultValue("")] public String Value { get; set; } [Browsable(false)] public List ChildItems { get; private set; } [Browsable(false)] public Dictionary Attributes { get; private set; } String IAttributeAccessor.GetAttribute(String key) { return (this.Attributes [ key ]); } void IAttributeAccessor.SetAttribute(String key, String value) { this.Attributes [ key ] = value; } } [Serializable] public enum ListStyleType { Auto = 0, Disc, Circle, Square, Decimal, LowerRoman, UpperRoman, LowerAlpha, UpperAlpha, None } SyntaxHighlighter.config.clipboardSwf = 'http://alexgorbatchev.com/pub/sh/2.0.320/scripts/clipboard.swf'; SyntaxHighlighter.brushes.CSharp.aliases = ['c#', 'c-sharp', 'csharp']; SyntaxHighlighter.all();

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  • Error 404 after rewrite query strings with htaccess

    - by Cristian
    I'm trying to redirect the URLs of a client's website like this: www.localsite.com/immobile.php?id_immobile=24 In something like this: www.localsite.com/immobile/24.php I'm using this rule in .htaccess but it returns a 404 error page. RewriteEngine On RewriteCond %{QUERY_STRING} ^id_immobile=([0-9]*)$ RewriteRule ^immobile\.php$ http://localsite.com/immobile/%1.php? [L] I have tried many other rules, but none work. What can I do?

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  • The provider did not return a ProviderManifestToken string Entity Framework

    - by PearlFactory
    Moved from Home to work and went to fire up my project and after long pause "The provider did not return a ProviderManifestToken string" or even More Abscure ProviderIncompatable Exception Now after 20 mins of chasing my tail re different ver of EntityFramework 4.1 vs 4.2...blahblahblah Look inside at the inner exception A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible DOH!!!! Or a clean translation is that it cant find SQL or is offline or not running. SO check the power is on/Service running or as in my case Edit web.config & change back to Work SQL box   Hope you dont have this pain as the default errors @ the moment suck balls in the EntityFramework 4.XX releases   Cheers

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  • Find and Replace String in filenames

    - by shekhar
    I have thousands of files with no specific extensions. What I need to do is to search for a sting in filename and replace with other string and further search for second string and replace with any other string and so on. I.e.: I have multiple strings to replace with other multiple strings. It may be like: "abc" in filename replaced with "def" * String "abc" may be in many files "jkl" in filename replaced with "srt" * String "jkl" may be in many files "pqr" in filename replaced with "xyz" * String "pqr" may be in many files I am currently using excel macro to get the file names in excel and then preserving original names in one column and replacing desired in the content copied in other column. then I create a batch file for the same. Like: rename Path\OriginalName1 NewName1 rename Path\OriginalName2 NewName2 Problem with the above procedure is that it takes a lot of time as the files are many. And As I am using excel 2003 there is limitation on number of rows as well. I need a script in batch like: replacestr abc with def replacestr pqr with xyz in a single directory. Will it be better to do in unix script?

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  • String Formatting with concatenation or substitution

    - by Davio
    This is a question about preferences. Assume a programming language offers these two options to make a string with some variables: "Hello, my name is ". name ." and I'm ". age ." years old." StringFormat("Hello, my name is $0 and I'm $1 years old.", name, age) Which do you prefer and why? I have found myself using both without any clear reason to pick either. Considering micro-optimizations is not within the scope of this question. Localization has been mentioned as a reason to go with option #2 and I think it's a very valid reason and deserves to be mentioned here. However, would opinions differ based on aesthetic viewpoints?

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  • IIS 6 nested virtual directory redirection

    - by threedaysatsea
    We're running IIS 6 on a WinServer2k3 box and we're having some trouble with the following problem: E-mails were sent out to users asking them to go to the following URL: alias.contoso.com/directory2/view.aspx?queryparam1=no&queryparam2=blue However, the URLS are actually supposed to be: server.contoso.com/directory2/view.aspx?queryparam1=no&queryparam2=blue It's too late to recall all of the e-mails, and we'd like to redirect traffic to make this as seamless as possible for our users. The real problem here is that the server (server.contoso.com) is hosting the alias (alias.contoso.com) as a redirect thusly, and the existing redirect we need to keep functional: Default Web Site (server.contoso.com) --Directory1 --Directory2 --Directory3 Redirection to Directory3 (alias.contoso.com) --Essentially alias.contoso.com will take the user to server.contoso.com/Directory3 Is there any way to host a separate redirect inside of the existing redirect? We need to keep alias.contoso.com taking the user to server.contoso.com/Directory3 but also make alias.contoso.com/directory2/view.aspx?queryparam1=no&queryparam2=blue point to server.contoso.com/directory2/view.aspx?queryparam1=no&queryparam2=blue Any tips? Is this even possible?

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  • Compare a variable that can have numeric or string as value

    - by Tarun
    I have a variable named Seconds_Behind_Master from one of my scripts. The problem is that this variable can either have a numeric value or can also take a string NULL as its value. Now, when I try to execute this script in shell it gets executed but gives a warning like this: [: Illegal number: NULL I believe it is due to the fact that in this case the value is NULL but when it compares it with numeral value 60 it gives this warning. How can I rectify it? Here is the piece of code: Seconds_Behind_Master=$Show_Slave_Status | grep "Seconds_Behind_Master" | awk -F": " {' print $2 '} if [ "$Seconds_Behind_Master" -ge "60" ]; then echo "replication delayed greater than or equal to 60." else if [ "$Seconds_Behind_Master" = "NULL" ]; then echo "Delay is Null." fi fi

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