bash - Set a parent shell's variable from a subshell -

-

मैं एक सबशेल्ड से मूल शेल में एक वैरिएबल कैसे सेट करूँ? 

  a = 3 (ए = 4) एकोरो $ a    
 
 
 एक सबशेल्ड का पूरा मुद्दा है कि यह  नहीं करता है  कॉलिंग सत्र को प्रभावित करता है बैश में एक सबशेल्ड एक बाल प्रक्रिया है, अन्य गोले भिन्न होते हैं लेकिन फिर भी एक सबशेल्ड में एक चर सेटिंग कॉलर को प्रभावित नहीं करती है। परिभाषा से।  
 क्या आपको एक सबशेल्ड की आवश्यकता है? अगर आपको सिर्फ एक समूह की आवश्यकता होती है तो ब्रेसिज़ का उपयोग करें:  
  a = 3 {a = 4;} प्रतिध्वनि $ a   
 देता है  4  (उस एक में रिक्त स्थान के बारे में सावधान रहें) वैकल्पिक रूप से, चर को stdout में लिखें और इसे कॉलर में कैप्चर करें:  
  a = 3 a = $ (a = 4; प्रति एको = echo) echo $ a   
 बैक-टिक्स `` का उपयोग न करें, उनका बहिष्कार किया जाता है और पढ़ना मुश्किल हो सकता है।

Comments

Post a Comment

Popular posts from this blog

php - How to filter values fetched from database on the basic of comma included? -

-
Image
I have some values ​​in my database in the column, as I have been shown in the picture below, Now if you notice there over there In the position of number three, we have the value, which is Italian, pizzeria (pizza), there may be some other values ​​that can be included in the Italian, pizzeria (pizza) like COMMA (,) Yes, as we can see in the picture below, Now I want to get all the values ​​of php (select * from tablename), but if the value is included in COMMA, then I Any way to filter out? I just want to select values ​​that do not have any commas, thanks in advance? Unless there is a pregate in my knowledge, or an array filter can help. would not like predicate: Choose * Where 'Business' food is not like '%,%' from the tablet name;
Read more

excel vba - How to delete Solver(SOLVER.XLAM) code -

-
After opening several examples of macro / code written, I suddenly get stuck with a code that seems safe. Solver (SOLVER.XLAM) is doing this notation and I would like to remove it from my system. I do not think this is a relativant code. Can anyone tell me what should I do? I have already installed something to remove the password but Solver is still asking for password and I can not get rid of it! itemprop = "text"> Solver Excel is add-in If you want to delete it, then Excel Application & gt; Options & gt; Add-ins & gt; Search for 'Go to' button and gt; Uncheck the solver on the list like press something (I can not give you the exact path because I have the Polish version of Excel). Trying to open Solver's VBA code is not good because it There is allegedly copyright. Besides, I do not think Solver creates any disadvantages while working with Excel or VBA.
Read more

c# - Add Image in a stackpanel based on textbox input -

-
I am trying to store the image in a stapple panel .. \ resources \ ebi.png Most of the time, the textbox input Based on "Atracount", the same image will be displayed in the StackPanel below, the sample code has been attempted, but it is getting an error saying "The specified view is already visible to any other view Has a child or is the origin of a composition goal " is the code below The Oshis: private bitmap image bmp = new Bitmap image (new Uri ( "WpfApplication1; components / resources / ebi.png", Urikind. Riletiv Orsolut)); Private Zero EtReqCount_TextChanged (Object Sender, TextChangedEventArgs E) {StackPanel dynamicStackPanel = new StackPanel (); DynamicStackPanel.Width = 300; DynamicStackPanel.Height = 200; DynamicStackPanel.Background = New SolidColorBrush (Color. LightBu); DynamicStackPanel.Orientation = Orientation. Vertical; If (Attarcount.Text! = "") {For (int k = 1; k & lt; = int32.Parse (etReqCount.Text); k ++) {I...
Read more