What folder contains the Wallpapers for 14.04
Where are the Unity desktop wallpapers located?
Do compound subjects like "everyone ... and everyone..." take singular or plural verb agreement? Here are the examples of compound subjects:      Everything on the bed and everything in the closet was organised   in under an hour.   Everybody who witnessed the shooting and everybody   in the room were interviewed.   Anyone on the soccer team and   anybody on the basketball team was eligible for the scholarship.   Should I also use was instead of were in the second example? Or the first and the third examples are incorrect that I should use were instead of was. HA configuration for KVM machines installed on shared iSCSI storage My requirement is to provide HA to a Zimbra Server. We want Zimbra files to be installed in a Netapp SAN which is providing around 5.7 TB as a SAN iSCI Drive. Since Netapp comes in with Dual Controller and stable performance, we are unlikely to have any down time.  I have 2 servers each having Xeon processor 6 Core, 32 GB RAM and 2 x 250 GB SSD. These are the two servers where I have installed CentOS 7.6. We would like to have one as primary and the second one as secondary.   Idea is to use the same principle of KVM HA ( What Redhat and even VMware) provides, so that if the primay goes down the IP gets switched to secondary, to create a simple Hot Redudant system.  We have a very few users on Zimbra, but there are a lot of automated emails coming in and we require a very large storage, and hence we are using the Netapp box.  I am able to switch between the KVMs. However I am struggling to figure out how I need to mount the iSCI target, so that the mail application stays alive.  Zimbra typically installs on /opt/. Do I mount the target on /opt/, and if so will it work? Or am I missing something else?  Or should I run the VM of the shared storage itself, and if so how can I configure it.   Zimbra itself is a combination of a database and files, and uses a number of services to keep itself active. Idea of using a shared storage is for Redundancy and high availability.  Appreciate your response and support. Adding shapefile or feature class as layer in ArcMap using ArcPy LWC Navigation: "this[f.NavigationMixin.Navigate] is not a function" When attempting to use the Lightning navigation service in my component's base class (.js), I get the following error when functionally testing in the UI:  this[f.NavigationMixin.Navigate] is not a function  I am calling the NavigationMixin function provided by the lightning/navigation module. I have imported the module: import { NavigationMixin } from 'lightning/navigation';  And am calling the function as below: this[NavigationMixin.Navigate]({     type: 'standard__recordPage',     attributes: {         recordId: this.org.Id,         objectApiName: 'Account',         actionName: 'view'     } }); Gel circular polarising filter I am contemplating buying a lens that only takes rear gel filters. Is it possible to buy a circular polarising filter in gel format? If so, who can supply them (preferably UK based)? Proof Check: Every Cauchy Sequence is Bounded Sorry if I keep asking for proof checks. I'll try to keep it to a minimum after this. I know this has a well-known proof. I understand that proof as well but I thought I'd do a proof that made sense to me and seemed, in some ways, simpler. Trouble is I'm not sure if it's totally correct. It's quite short though. I was just hoping someone could look it over and see if it is a valid proof. Thank you!  Lemma: Every Cauchy sequence is bounded.  Proof: Let $(a_{n})$ be Cauchy. We choose $ 0&lt;\epsilon_{0}$. So $ \forall \; n&gt;m\geq N_{0}$ we have that $\vert a_{n}-a_{m} \vert &lt; \epsilon_{0}$. Therefore $(a_{n})$ is bounded for all $ m \geq N_{0} $ by $ \epsilon_{0} $. Since $ \mathbb{N}_{N_{0}}$ is finite, it is bounded. So, for all $ m&lt;N_{0} $, $ (a_{n})$ is bounded. Therefore $(a_{n})$ is bounded.  I realize I haven't said what the bounds are but I think that's sort of irrelevant. So long as we know it's bounded. Any help is much appreciated! My question is from Apostol's Vol. 1 One-variable calculus with introduction to linear algebra textbook.  Page 57. Exercise 12. Show that the following are polynomials by converting them to the form $\sum_{k=0}^{m}a_kx^k$ for a suitable $m$. In each case $n$ is a positive integer. $a)$ $(1+x)^{2n}.$ $b)$ $\frac{1-x^{n+1}}{1-x}, x\not=1.$ $c)$ $\prod_{k=0}^{n}(1+x^{2^k}).$  The attempt at a solution: a) part of the problem is pretty easy I guess, it is example of binomial theorem, so the answer would be $(1+x)^{2n}=\sum_{k=0}^{2n}(^{2n}_{k})x^k.$ Answer to part b) would be the following: $$\frac{1-x^{n+1}}{1-x}=\frac{(1-x)(1+x+x^2+\cdots+x^n)}{1-x}=1+x+x^2+\cdots+x^n=‌​\sum_{k=0}^{n}x^k.$$thanks to @DiegoMath's hint. As for part c), we have $$\prod_{k=0}^{n}(1+x^{2^k})=(1+x)(1+x^2)(1+x^4)(1+x^8)\cdots(1+x^{2^n})$$ and I have trouble &quot;converting&quot; this to sum which would be of a form of polynomial. how to calculate earliest leap year in formula field salesforce I am writing a formula where I need a logic for calculating the earliest leap year.     Formula   (Sum(Mort1, Mort2, Mort3)*1.08^(current year-earliest LP year))+water+ECB+Taxes   What logic we can apply for earliest LP year? There is a possibility for our universe to be the surface volume of a (higher-dimensional) hyperspace. So if this possibility is true,then is there also a possibility that the other galaxies we see are our own galaxy after light has completed revolution around the three dimensional boundary (surface volume).  Know that we see different shapes for different galaxies.This can be perhaps due to other reasons like-   distance light travelled, the angle through which we look to see the other galaxy (possibly Milky Way) after     it made any number of revolutions, the part of the other galaxy (possibly Milky Way) which we see,and some other properties of light and space.   Only our Milky Way galaxy is just one possibility  Another possibilities are the number of galaxies are far less than we see because we see the same galaxy several times due to curved space.  Any possibilities for the above statements to be true? MongoDB could not connect local server I had mongdb installed and evrything was working fine. I wanted to delete the mongodb lock. By mistake the directory /var/lib/mongodb/ got deleted.  So, I uninstalled mongo db and installed again. But now i always keep getting this error:  Error: couldn't connect to server 127.0.0.1:27017 at src/mongo/shell/mongo.js:145 exception: connect fail   The error remains same even if I try to login from terminal or rockmongo or my application. I am using ubuntu12.04 and have latest version of mongo. Wordpress speed slow after .5 million single image post via wp-cli Using select by attributes then calculate field on selection in ArcPy? ArcGIS Pro 2.3  I want to create a standalone script which runs outside of ArcGIS Pro (for automation purposes), which selects features (with blank attributes) in a feature class and runs calculate field on those selections.  The code below doesn't work. It updates all fields, not the selected ones.  import arcpy arcpy.management.SelectLayerByAttribute(r"C:\Automation\Categories\Coal\Coal_automation.gdb\CLAIMS", "NEW_SELECTION", "Claim_Spend_in_£ = ''", None)  arcpy.management.CalculateField(r"C:\Automation\Categories\Coal\Coal_automation.gdb\CLAIMS", "Claim_Spend_in_£", '"Unrecorded"', "PYTHON3", None) print ("Done")   How can I write the code to run calculate field on a selection? Here's my proof in my own words, does it stack up?   Showing $A$ is complete implies $A$ is closed. Let $(x_n)$ be a convergent sequence in $A$. $A$ is complete $\implies (x_n) \to p \in A$. Hence $A$ is closed. Showing $A$ is closed $\implies$ $A$ is complete. Let $(x_n)$ be a convergent sequence in $A$. $A$ is closed $\implies (x_n) \to p \in A$. As every convergent sequence is a Cauchy sequence, $(x_n)$ is a Cauchy sequence in $A$ that converges to $p \in A$ and hence $A$ is complete.   That sound ok?  As an aside, it seems to me that the definition of completeness and closed are basically identical, why are there two definitions for the same thing? Am I missing something here? Why is current a scalar quantity? 401k withdrawal abroad and state taxation? From what I know about 401k's, when it's time to retire, we take our 401k money and pay federal and state tax. Some states don't have taxes on 401k's — Florida is a good example. So many people move to Florida for a retirement, not to pay taxes (that's why people call it heaven's waiting room). The question is - how does it work if a US citizen permanently moves to another country for a retirement (retaining citizenship, but not living in any of the US states)? Are there any state taxes? If yes, then why? What is the rule for omitting/including the definite article in the following sentences:     I used to play piano.   I used to play the piano.   I would pick the first sentence, but I've heard people say the second sentence even when they are not referring to a specific piano. Which one is correct? I am very new to R. I am learning machine learning right now. Very sorry, if this question appears to be very basic.  I am trying to find a good feature selection package in R.  I went through Boruta package. It is a good package but I read that it is only useful for classification.  I want to do implement feature selection in R for regression tasks. I went through the caret package documentation but for my level, it is very difficult to understand.  Can any one please point me to a good tutorial or list any good packages or most frequently used packages in R for feature selection.  Any help would be appreciated. Thanks in advance. tail -f equivalent for MySQL logging database Django: manage.py does not print stack trace for errors How do I add a Pokestop to my area?