{"publication":{"id":"61b9cd4bd2a5c9036e6f22e3","posts":{"edges":[{"node":{"id":"64172d1c660ced2318abd69b","title":"Networking Fundamentals","slug":"networking-fundamentals","publishDate":"2023-03-19T15:41:16.929Z","cuid":"clffkf8jk000509l855brgq0q","url":"https://arunudayakumar.hashnode.dev/networking-fundamentals","subtitle":null,"brief":"What is DNS or domain name system?\n$ nslookup google.co.in\nServer: 127.0.0.53\nAddress: 127.0.0.53#53\nNon-authoritative answer:\nName: google.co.in\nAddress: 142.250.183.227 ->IPv4 uses .\nName: google.co.in\nAddress: 2404:6800:4007:82a::2003 ->IPv6 uses ...","readTimeInMinutes":1,"views":16,"author":{"id":"61b9cca1d2a5c9036e6f22c7","username":"arunudayakumar","name":"Arun Udayakumar","profilePicture":"https://cdn.hashnode.com/res/hashnode/image/upload/v1639566497875/f7Oun1cib.png","followersCount":0,"__typename":"User"},"coverImage":{"url":null,"isPortrait":null,"__typename":"PostCoverImage"},"__typename":"Post"},"cursor":"64172d1c660ced2318abd69b_2023-03-19T15:41:16.929Z","__typename":"PostEdge"},{"node":{"id":"64169f7f22060dc797db204d","title":"Creating Ubuntu Live Server 22.0 in Virtual Box and interacting with Ubuntu 22.0 Client","slug":"creating-ubuntu-live-server-220-in-virtual-box-and-interacting-with-ubuntu-220-client","publishDate":"2023-03-19T05:37:03.836Z","cuid":"clfeyu7h8000909moe2st0t3l","url":"https://arunudayakumar.hashnode.dev/creating-ubuntu-live-server-220-in-virtual-box-and-interacting-with-ubuntu-220-client","subtitle":"","brief":"Following setting as neccessary in virtual box to work:\nIn NAT -> Port Forwarding:\nRule 1:\nName=Apache, Protocol=TCP, Host IP=192.168.1.x, Host Port=8080, Guest IP=10.0.2.x, Guest Port=80\nRule 2:\nName=ssh, Protocol=TCP, Host IP=192.168.1.x, Host Port...","readTimeInMinutes":1,"views":14,"author":{"id":"61b9cca1d2a5c9036e6f22c7","username":"arunudayakumar","name":"Arun Udayakumar","profilePicture":"https://cdn.hashnode.com/res/hashnode/image/upload/v1639566497875/f7Oun1cib.png","followersCount":0,"__typename":"User"},"coverImage":{"url":"https://cdn.hashnode.com/res/hashnode/image/upload/v1679204177349/6b7aa4b7-3b74-47d1-a297-760860ab1cd6.png","isPortrait":null,"__typename":"PostCoverImage"},"__typename":"Post"},"cursor":"64169f7f22060dc797db204d_2023-03-19T05:37:03.836Z","__typename":"PostEdge"},{"node":{"id":"640d8edfb59dc6bb2ae4da3f","title":"Useful and Interesting websites","slug":"useful-and-interesting-websites","publishDate":"2023-03-12T08:35:43.803Z","cuid":"clf5550e3000e0alc8fw9djpa","url":"https://arunudayakumar.hashnode.dev/useful-and-interesting-websites","subtitle":null,"brief":"Locate any place in the world with 3 unique words:\n\nhttps://what3words.com","readTimeInMinutes":1,"views":8,"author":{"id":"61b9cca1d2a5c9036e6f22c7","username":"arunudayakumar","name":"Arun Udayakumar","profilePicture":"https://cdn.hashnode.com/res/hashnode/image/upload/v1639566497875/f7Oun1cib.png","followersCount":0,"__typename":"User"},"coverImage":{"url":null,"isPortrait":null,"__typename":"PostCoverImage"},"__typename":"Post"},"cursor":"640d8edfb59dc6bb2ae4da3f_2023-03-12T08:35:43.803Z","__typename":"PostEdge"},{"node":{"id":"640d8dc30126e8af2d9fbef9","title":"Questions on wxWidgets Understanding","slug":"questions-on-wxwidgets-understanding","publishDate":"2023-03-12T08:30:59.342Z","cuid":"clf54ywwe000g09jqduioccsd","url":"https://arunudayakumar.hashnode.dev/questions-on-wxwidgets-understanding","subtitle":"Learn by Practice and Understanding","brief":"How is the wxWidgets app instantiated?\n\n\n#include \nclass MyApp : public wxApp\n{\npublic:\n virtual bool OnInit();\n};\n\nwxIMPLEMENT_APP(MyApp); //calls MyApp declared above\n\nclass MyFrame : public wxFrame\n{\npublic:\n MyFrame(const wxString ...","readTimeInMinutes":1,"views":15,"author":{"id":"61b9cca1d2a5c9036e6f22c7","username":"arunudayakumar","name":"Arun Udayakumar","profilePicture":"https://cdn.hashnode.com/res/hashnode/image/upload/v1639566497875/f7Oun1cib.png","followersCount":0,"__typename":"User"},"coverImage":{"url":null,"isPortrait":null,"__typename":"PostCoverImage"},"__typename":"Post"},"cursor":"640d8dc30126e8af2d9fbef9_2023-03-12T08:30:59.342Z","__typename":"PostEdge"},{"node":{"id":"63147e4e041b51e1712e40f8","title":"How to call another process in QT","slug":"how-to-call-another-process-in-qt","publishDate":"2022-09-04T10:30:38.873Z","cuid":"cl7n70sok04fsgznvek2m3okm","url":"https://arunudayakumar.hashnode.dev/how-to-call-another-process-in-qt","subtitle":"","brief":"#include \n#include \n\nint main(int argc, char *argv[])\n{\n QProcess OProcess;\n QString Command; //Contains the command to be executed\n QStringList args; //Contains arguments of the command\n\n Command = \"ls\";\n args...","readTimeInMinutes":1,"views":17,"author":{"id":"61b9cca1d2a5c9036e6f22c7","username":"arunudayakumar","name":"Arun Udayakumar","profilePicture":"https://cdn.hashnode.com/res/hashnode/image/upload/v1639566497875/f7Oun1cib.png","followersCount":0,"__typename":"User"},"coverImage":{"url":"","isPortrait":null,"__typename":"PostCoverImage"},"__typename":"Post"},"cursor":"63147e4e041b51e1712e40f8_2022-09-04T10:30:38.873Z","__typename":"PostEdge"},{"node":{"id":"6311758656df9e8e5025e220","title":"How to permenantly add path to LD_LIBRARY_PATH","slug":"how-to-permenantly-add-path-to-ldlibrarypath","publishDate":"2022-09-02T03:16:22.806Z","cuid":"cl7jwmmcf0r6l1unvatqmeugv","url":"https://arunudayakumar.hashnode.dev/how-to-permenantly-add-path-to-ldlibrarypath","subtitle":"","brief":"LD_LIBRARY_PATH=\"$LD_LIBRARY_PATH:/usr/local/lib\"","readTimeInMinutes":1,"views":14,"author":{"id":"61b9cca1d2a5c9036e6f22c7","username":"arunudayakumar","name":"Arun Udayakumar","profilePicture":"https://cdn.hashnode.com/res/hashnode/image/upload/v1639566497875/f7Oun1cib.png","followersCount":0,"__typename":"User"},"coverImage":{"url":"","isPortrait":null,"__typename":"PostCoverImage"},"__typename":"Post"},"cursor":"6311758656df9e8e5025e220_2022-09-02T03:16:22.806Z","__typename":"PostEdge"},{"node":{"id":"625285ec92d73e7055c19377","title":"Create a Process","slug":"create-a-process","publishDate":"2022-04-10T07:23:24.571Z","cuid":"cl1syls8n06sk0wnv3uynb644","url":"https://arunudayakumar.hashnode.dev/create-a-process","subtitle":"","brief":"#include\n#include\n\nint main()\n{\n pid_t pid;\n\n pid = fork();\n\n if(pid<0)\n printf(\"1. Parent process %d\\n\",getpid()); \n else if(pid==0)\n printf(\"2. Child process %d\\n\",getpid());\n else\n printf(\"...","readTimeInMinutes":2,"views":15,"author":{"id":"61b9cca1d2a5c9036e6f22c7","username":"arunudayakumar","name":"Arun Udayakumar","profilePicture":"https://cdn.hashnode.com/res/hashnode/image/upload/v1639566497875/f7Oun1cib.png","followersCount":0,"__typename":"User"},"coverImage":{"url":"","isPortrait":null,"__typename":"PostCoverImage"},"__typename":"Post"},"cursor":"625285ec92d73e7055c19377_2022-04-10T07:23:24.571Z","__typename":"PostEdge"},{"node":{"id":"6209407185b93114aeba58b5","title":"Mini Projects to be done","slug":"mini-projects-to-be-done","publishDate":"2022-02-13T17:31:29.019Z","cuid":"ckzljo2ia08b932s1gkdv33q6","url":"https://arunudayakumar.hashnode.dev/mini-projects-to-be-done","subtitle":"","brief":"Plan: Feb13\nNot urgent:\nproject to learn Asp.net and Microsoft SQL Server\na web-based based project to calculate and keep the tax records of different items as per certain rules for any business.\n1) Practice these:\nAzure Data Studio - Check auto crea...","readTimeInMinutes":1,"views":9,"author":{"id":"61b9cca1d2a5c9036e6f22c7","username":"arunudayakumar","name":"Arun Udayakumar","profilePicture":"https://cdn.hashnode.com/res/hashnode/image/upload/v1639566497875/f7Oun1cib.png","followersCount":0,"__typename":"User"},"coverImage":{"url":"","isPortrait":null,"__typename":"PostCoverImage"},"__typename":"Post"},"cursor":"6209407185b93114aeba58b5_2022-02-13T17:31:29.019Z","__typename":"PostEdge"},{"node":{"id":"62078415d59187113c4c00df","title":"My Learnings in SQL","slug":"my-learnings-in-sql","publishDate":"2022-02-12T09:55:33.810Z","cuid":"ckzjnxwg706jueks1a5277iqu","url":"https://arunudayakumar.hashnode.dev/my-learnings-in-sql","subtitle":"","brief":"Numerical data types:\nbigint - 64-bit representation of an integer. It takes up 8 bytes of storage. (long long int) 2^63\nint - \nsmallint - \ntinyint - \ndecimal(s, d) - 12.50 decimal(4,2)\nCharacter Data types:\nchar(s) - 255 chars. If char(30) ...","readTimeInMinutes":3,"views":34,"author":{"id":"61b9cca1d2a5c9036e6f22c7","username":"arunudayakumar","name":"Arun Udayakumar","profilePicture":"https://cdn.hashnode.com/res/hashnode/image/upload/v1639566497875/f7Oun1cib.png","followersCount":0,"__typename":"User"},"coverImage":{"url":"","isPortrait":null,"__typename":"PostCoverImage"},"__typename":"Post"},"cursor":"62078415d59187113c4c00df_2022-02-12T09:55:33.810Z","__typename":"PostEdge"},{"node":{"id":"61ffd482c755bb5e7f11537a","title":"Gist of Linked List","slug":"gist-of-linked-list","publishDate":"2022-02-06T14:00:34.809Z","cuid":"ckzbc1vtd00a3nzs1g7d7d79t","url":"https://arunudayakumar.hashnode.dev/gist-of-linked-list","subtitle":"","brief":"#include\n#include //malloc\n\ntypedef struct Node{\n int x;\n struct Node* next;\n}Node;\n\nint main()\n{\nNode root;\nroot.x = 15;\nroot.next = malloc(sizeof(Node));\nroot.next->x = -2;\nroot.next->next = NULL;\n\nprintf(\"%d %d\\n\", root.x,...","readTimeInMinutes":1,"views":20,"author":{"id":"61b9cca1d2a5c9036e6f22c7","username":"arunudayakumar","name":"Arun Udayakumar","profilePicture":"https://cdn.hashnode.com/res/hashnode/image/upload/v1639566497875/f7Oun1cib.png","followersCount":0,"__typename":"User"},"coverImage":{"url":"","isPortrait":null,"__typename":"PostCoverImage"},"__typename":"Post"},"cursor":"61ffd482c755bb5e7f11537a_2022-02-06T14:00:34.809Z","__typename":"PostEdge"},{"node":{"id":"61d69b706be3e31286ae76df","title":"Some of the errors faced in GCC","slug":"some-of-the-errors-faced-in-gcc","publishDate":"2022-01-06T07:34:08.176Z","cuid":"cky2nli7t03wmnqs132mc2xvq","url":"https://arunudayakumar.hashnode.dev/some-of-the-errors-faced-in-gcc","subtitle":"","brief":"std::string some_string = \"\\0234567890\";\nchar *ans = some_string;\n\nerror: cannot convert ‘std::string’ {aka ‘std::__cxx11::basic_string’} to ‘char*’ in initialization\n\nSolution:\nstd::string some_string = \"\\0234567890\";\nchar *ans = strdup(some_string....","readTimeInMinutes":1,"views":21,"author":{"id":"61b9cca1d2a5c9036e6f22c7","username":"arunudayakumar","name":"Arun Udayakumar","profilePicture":"https://cdn.hashnode.com/res/hashnode/image/upload/v1639566497875/f7Oun1cib.png","followersCount":0,"__typename":"User"},"coverImage":{"url":"https://cdn.hashnode.com/res/hashnode/image/unsplash/CrhsIRY3JWY/upload/v1641454485375/tZxDlJsym.jpeg","isPortrait":null,"__typename":"PostCoverImage"},"__typename":"Post"},"cursor":"61d69b706be3e31286ae76df_2022-01-06T07:34:08.176Z","__typename":"PostEdge"},{"node":{"id":"61d6952588735812b7f38ee6","title":"Looping through nested map structure in C++","slug":"looping-through-nested-map-structure-in-c","publishDate":"2022-01-06T07:07:17.247Z","cuid":"cky2mmz81036pp3s14utaai6j","url":"https://arunudayakumar.hashnode.dev/looping-through-nested-map-structure-in-c","subtitle":"","brief":"Simple way to loop through the nested map structures.\n map > u;\n u [2][3] = 25;\n u [4][5] = 65;\n\n if(auto it = u.find(4); it != u.end())\n {\n auto second_part = u[it->first];\n if(auto it1 = second_part.find(5); it1 != seco...","readTimeInMinutes":1,"views":25,"author":{"id":"61b9cca1d2a5c9036e6f22c7","username":"arunudayakumar","name":"Arun Udayakumar","profilePicture":"https://cdn.hashnode.com/res/hashnode/image/upload/v1639566497875/f7Oun1cib.png","followersCount":0,"__typename":"User"},"coverImage":{"url":"https://cdn.hashnode.com/res/hashnode/image/unsplash/CdhvGEOHU9w/upload/v1641452764598/DunUkOk7A.jpeg","isPortrait":null,"__typename":"PostCoverImage"},"__typename":"Post"},"cursor":"61d6952588735812b7f38ee6_2022-01-06T07:07:17.247Z","__typename":"PostEdge"}],"pageInfo":{"hasNextPage":true,"hasPreviousPage":true,"endCursor":"61d6952588735812b7f38ee6_2022-01-06T07:07:17.247Z","__typename":"PageInfo"},"__typename":"PostConnection"},"__typename":"Publication"}}