Author Archives: Roopendra - Page 2
How to check if file does not exist in Bash?
Check if file does not exist in Bash Script? You can use -f option in bash script to check if file does not exist. Check if file does not exists…
How to check if a directory exists in a bash script?
How to check if a directory exists in a bash script? In shell script implementation you might come across use case where you need to perform some operation in a…
Find the largest and smallest number in python using for loop
Write a python program to find the largest and smallest number in python using for loop Assign first element of an array to largest(lt) and smallest (st) value the array…
Find two numbers whose sum is equal to a given number in sorted array
Find two numbers whose sum is equal to a given number in sorted array In order to find the sum of the two array elements you need to traverse in array and check the sum of each element. Let's take an example of below sorted array in which we have…
Bubble sort program in python
Write a Program in Python to execute Bubble sort program What is Bubble Sort Program ? Bubble sort is a simple sorting algorithm that compares adjacent elements and swaps them…
Program to print Fibonacci series in python
The Fibonacci numbers, commonly refers as Fibonacci sequence, in which each number is the sum of the two preceding numbers, starting from 0 and 1. The Fibonacci Sequence is the…
Reverse String in Python using Recursion
Let's understand what is the recursion in programming with reverse string in Python program Recursion is a process by which a function calls itself directly or indirectly. The corresponding function is called as recursive…
HDFS Cheat Sheet
List of commands which I use day to day basis to perform my task in HDFS. Checkout below hdfs cheat sheet for reference. In below list I have covered Copy,…
Shell Script Questions and Answers
Please find below list of Shell Script Questions and Answers. Shell Script Questions and Answers 1. Given two integers, X and Y , find their sum, difference, product, and quotient. Constraints X…
Install Elasticsearch on Centos 7
Steps to Install Elasticsearch on centos 7 Prerequisites: Install OpenJDK 8 version sudo yum install Validate the installation java -version If you are installing jdk manually from tar file then…
