My question is not related to the  Parse XML to get node value in bash script? Also i cannot install/use any new XML parser as per the company policy. This needs to be achieved using shell/perl/awk/sed  I will try to rephrase my question:  1) We have a process.log file in which we have lot of text data and in between we have some XML data published. 2) There of thousands of different XML published in the logs along with other text data. 3) Now i need to select only the XML files which are published after Outgoing XML: value 4) Also the XML file which must be selected and copied to a new file should be the one which matches the value in the ALERTID tag. 5) The ALERTID value will be provided in the script input. So in our case mGMjhgHgffHhhFdH1u4 will be provided in the input and we need to select the full XML file published for this alertid. Starting tag is from  and ending tag is  5) So i need to select the relevant Outgoing XML file in a new file based on a particular ALERTID so it can be replayed in different environments.     Format of the log:   Info Jan 11 17:30:26.12122 The process is not responding to heartbeats Debug Jan 11 17:30:26.12123  Incoming XML :&lt;xml version "1.0" encoding ="UTF-8"?&gt; &lt;Alert trigger = "true" &gt; &lt;Alerttype&gt;orderReject&lt;/Alerttype&gt; &lt;AlertID&gt;ghghfsjUtYuu78T1&lt;/AlertID&gt; &lt;Order&gt;uusingas&lt;/Order&gt; &lt;Quantity&gt;1254&lt;/Quanity&gt; &lt;/Alert&gt; (CreateInitEventHandler. C:356) Debug Jan 11 17:30:26.12199 The process is going down with warnings Debug Jan 11 17:30:26.148199 Outgoing XML: &lt;xml version "1.0" encoding ="UTF-8"?&gt; &lt;Alert trigger = "true" &gt; &lt;Alerttype&gt;orderheld&lt;/Alerttype&gt; &lt;AlertID&gt;mGMjhgHgffHhhFdH1u4&lt;/AlertID&gt; &lt;Order&gt;uwiofhdf&lt;/Order&gt; &lt;Quantity&gt;7651&lt;/Quanity&gt; &lt;/Alert&gt;(CreateEventHandler. C:723) Debug Jan 11 17:30:26.13214 The process has restarted and thread opened Debug Jan 11 17:30:26.13215 The heartbeat is recieved from alertlistener process   Now the requirement is to take AlertID in the input, scan the process log and extract the matching outgoing XML in a separate file.  Using awk i am able to extract all the outgoing xml files but not sure how to extract the one  related to a particular AlertID.   Eg:  awk '/Outgoing/{p=1; s=$0} P &amp; &amp; /&lt;\/Alert&gt;/ {print $0 FS s; s="" ;p=0}p' 1.log&gt;2.log
I would like to know how I can get the value of a node with the following paths:   config/global/resources/default_setup/connection/host config/global/resources/default_setup/connection/username config/global/resources/default_setup/connection/password config/global/resources/default_setup/connection/dbname   from the following XML:  &lt;?xml version="1.0"?&gt; &lt;config&gt;     &lt;global&gt;         &lt;install&gt;             &lt;date&gt;&lt;![CDATA[Tue, 11 Dec 2012 12:31:25 +0000]]&gt;&lt;/date&gt;         &lt;/install&gt;         &lt;crypt&gt;             &lt;key&gt;&lt;![CDATA[70e75d7969b900b696785f2f81ecb430]]&gt;&lt;/key&gt;         &lt;/crypt&gt;         &lt;disable_local_modules&gt;false&lt;/disable_local_modules&gt;         &lt;resources&gt;             &lt;db&gt;                 &lt;table_prefix&gt;&lt;![CDATA[]]&gt;&lt;/table_prefix&gt;             &lt;/db&gt;             &lt;default_setup&gt;                 &lt;connection&gt;                     &lt;host&gt;&lt;![CDATA[localhost]]&gt;&lt;/host&gt;                     &lt;username&gt;&lt;![CDATA[root]]&gt;&lt;/username&gt;                     &lt;password&gt;&lt;![CDATA[pass123]]&gt;&lt;/password&gt;                     &lt;dbname&gt;&lt;![CDATA[testdb]]&gt;&lt;/dbname&gt;                     &lt;initStatements&gt;&lt;![CDATA[SET NAMES utf8]]&gt;&lt;/initStatements&gt;                     &lt;model&gt;&lt;![CDATA[mysql4]]&gt;&lt;/model&gt;                     &lt;type&gt;&lt;![CDATA[pdo_mysql]]&gt;&lt;/type&gt;                     &lt;pdoType&gt;&lt;![CDATA[]]&gt;&lt;/pdoType&gt;                     &lt;active&gt;1&lt;/active&gt;                 &lt;/connection&gt;             &lt;/default_setup&gt;         &lt;/resources&gt;         &lt;session_save&gt;&lt;![CDATA[files]]&gt;&lt;/session_save&gt;     &lt;/global&gt;     &lt;admin&gt;         &lt;routers&gt;             &lt;adminhtml&gt;                 &lt;args&gt;                     &lt;frontName&gt;&lt;![CDATA[admin]]&gt;&lt;/frontName&gt;                 &lt;/args&gt;             &lt;/adminhtml&gt;         &lt;/routers&gt;     &lt;/admin&gt; &lt;/config&gt;   Also I want to assign that value to the variable for further use. Let me know your idea.
Using 'do' unnecessarily Often when I am on a flight, nearly every sentence I hear from the flight attendants contains an unnecessary emphatic auxiliary in its main clause; that is, an altogether unnecessary do or unnecessary emphasis on other auxiliaries:     We do apologise for the delay, which was due to technical issues, but we will be taking off shortly, and we do hope you enjoy the flight. We do ask you to fasten you seatbelt now, and if you do have any questions, we do hope you won't hesitate to ask us.   What is the purpose of this constant emphasis? My guess is it's supposed to somehow elevate their language to a higher register, but why do flight attendants in particular seem so fond of this? How to handle a lost KeyStore password in Android? This question has come up    ( ), but I'm finding the answers to be generally incomplete. The general question is "Why does/doesn't my job get killed when I exit/kill ssh?", and here's what I've found.  The first question is:  How general is the following information?  The following seems to be true for modern Debian linux, but I am missing some bits; and what do others need to know?   All child processes, backgrounded or not of a shell opened over an ssh connection are killed with SIGHUP when the ssh connection is closed only if the huponexit option is set: run shopt huponexit to see if this is true. If huponexit is true, then you can use nohup or disown to dissociate the process from the shell so it does not get killed when you exit.  Or, run things with screen. If huponexit is false, which is the default on at least some linuxes these days, then backgrounded jobs will not be killed on normal logout. But even if huponexit is false, then if the ssh connection gets killed, or drops (different than normal logout), then backgrounded processes will still get killed.  This can be avoided by disown or nohup as in (2). There is some distinction between (a) processes whose parent process is the terminal and (b) processes that have stdin, stdout, or stderr .  I don't know what happens to processes that are (a) and not (b), or vice versa.   Final question: How can I avoid behavior (3)?  In other words, by default in Debian backgrounded processes run along merrily by themselves after logout but not after the ssh connection is killed.  I'd like the same thing to happen to processes regardless of whether the connection was closed normally or killed.  Or, is this a bad idea?  Edit: Another, important way to keep jobs of being killed, that works (?) in either case is to run them through .  But, the question is more about understanding when things get killed and when they don't: sometimes people want the jobs to be killed on logout, for instance.  More threads: -  -  -  -  -  -  -  - In what order do multiple readied actions with the same trigger resolve? My players have been scheming with rapid entry tactics for the megadungeon I've recently started running. Unfortunately, the monsters are aware of the adventurers, and this has lead to a weird question of priority. Given the following situation (which I'm pretty sure is going to happen next session in some form or another) what happens?     Alice the adventurer readies an action; if her teammate Carlos opens   the door, she's going to throw the alchemists fire through the door,   which should do enough damage to kill any goblins hiding there.      Meanwhile, on the other side of the door, Bob the goblin is lying in   wait. He readies an action; if the door opens, he's going to hit the   switch to open the trapdoor in the next room, which should drop any    pesky adventurers into a pit with spikes at the bottom.      Carlos opens the door.   I know what happens when , but what happens when multiple readied actions get triggered at the same time? My guess would be an opposed reflex save or initiative check of some kind to see who goes first, but that's entirely just intuition speaking. The rulebook doesn't seem to speak to the issue. Replace preg_replace() e modifier with preg_replace_callback Why modules with no variables? Inspired by  which states limb loss as a recurring theme, I started thinking about the final lightsaber battle. After watching The Force Awakens the second time, I was not sure if      Kylo Ren   lost a limb or just lost his lightsaber. We definitely see      Rey slash at Ren’s right hand.   So knowing that context:      Did Kylo Ren actually lose his arm/hand? Jquery load() and PHP variables Number of bitstrings with $000$ as substring I have $F_n$ number of bitstrings that have $000$, How would I prove that for $n \ge 4$ , $a_n = a_{n-1} +a_{n-2}+a_{n-3}+ 2^{n-3}$?  Now there are many  ways to go about this but if I choose starting a $n-3$ bit string and append it with $000$ how would I show that? Split a commit into smaller commits with Git? Overall reputation scores are headed nowhere but up.  Pretty soon there will be thousands of mods.  What to do?  Thoughts on possibilities:   Thousands of mods is fine.  Carry on. Adjust the threshold values for high-level SO privileges. Do a straight-up inflation adjustment.  You had x rep, then at the turn of the year we applied the Consumer Rep Index to all scores, now you have (x / inflation) rep. Implement a rep decay mechanism, so that inactivity sheds some of the overall rep that's built up. ClassNotFoundException: org.eclipse.jetty.util.component.AbstractLifeCycle running inside jetty Keep box-shadow direction consistent while rotating Deriving the inverse of a 2x2 matrix $\sum (-1)^n/n$ fails the p-series test, but passes the alternating series test? Functional equation: $f: \mathbb{R} \rightarrow \mathbb{R}$, $f((x + 1) f(y)) = y (f(x) + 1)$ prove that a connected graph with $n$ vertices has at least $n-1$ edges Show that every connected graph with $n$ vertices has at least $n − 1$ edges.  How can I prove this?  Conceptually, I understand that the following graph has 3 vertices, and two edges:  a-----b-----c  with $a$, $b$ and $c$ being vertices, and $\{a,b\}$, $\{b,c\}$ being edges.  Is there some way to prove this logically?  --UPDATE--  Does this look correct?  Any advice on how to improve this proof would be appreciated.  Thank you. @track vs @api (Lightning Web Components) Let's say we have this code for a LWC:  &lt;!-- helloExpressions.html --&gt; &lt;template&gt;     &lt;div class="slds-m-around_medium"&gt;         &lt;lightning-input name='firstName' label="First Name" onchange={handleChange}&gt;&lt;/lightning-input&gt;         &lt;lightning-input name='lastName' label="Last Name" onchange={handleChange}&gt;&lt;/lightning-input&gt;         &lt;p class="slds-m-top_medium"&gt;Uppercased Full Name: {uppercasedFullName}&lt;/p&gt;     &lt;/div&gt; &lt;/template&gt;   and this is the JS file:  // helloExpressions.js import { LightningElement, track } from 'lwc';  export default class HelloExpressions extends LightningElement {     @track firstName = '';     @track lastName = '';      handleChange(event) {         const field = event.target.name;         if (field === 'firstName') {             this.firstName = event.target.value;         } else if (field === 'lastName') {             this.lastName = event.target.value;         }     }      get uppercasedFullName() {         return `${this.firstName} ${this.lastName}`.toUpperCase();     } }   firstName and lastName have been decorated with @track. Now as per the documentation, decorating a property with @track makes it private and reactive, while to mark a property public and reactive, use @api.  So if I just change the decorator to @api for both these variables, it should work. I am referring these from the same component only. But it's not working.  UPDATE: 27th Feb -------------------- Somehow it's working today. I just changed the decorator of the variables to api.  import { LightningElement, api } from 'lwc';  export default class HelloExpressions extends LightningElement {     @api firstName = '';     @api lastName = '';      handleChange(event) {         const field = event.target.name;         if (field === 'firstName') {             this.firstName = event.target.value;         } else if (field === 'lastName') {             this.lastName = event.target.value;         }     }      get uppercasedFullName() {         return `${this.firstName} ${this.lastName}`.toUpperCase();     } }   So it's working. What is the best introductory Bayesian statistics textbook? Which is the best introductory textbook for Bayesian statistics?  One book per answer, please. Is there an implementable (non-theoretical) way to prove if email address belong to real email account?