In centos Install the required packages with below command yum install whois Then enter the below command to check domain expiry date whois google.com | grep “Registry Expiry Date” | [ … ]
How to clear Memory Cache and Buffer Cache
1)To Clear PageCache only echo 1 > /proc/sys/vm/drop_caches 2)To Clear dentries and inodes. echo 2 > /proc/sys/vm/drop_caches 3) To Clear PageCache, dentries and inodes. # sync; echo 3 > /proc/sys/vm/drop_caches [ … ]
History of Java
Java was developed in early 90’s by James Gosling. The team called Green Team initiated this project to developed a language for electronic appliances such as set-top boxes, televisions etc. [ … ]
Two Dimensional Array
Two dimensional array is used to store the data in the matrix form. Syntax: datatype arrayname[row_size][column_size]; Declaration of Two Dimensional Array: Example: int matrix[3][2]; The above declaration is a two [ … ]
One Dimensional Array
Is the basic form of array in which list of elements are stored in single variable and is accessed using only one subscript.Syntax:datatype arrayname[size]; Declaration of One Dimensional Array:“Array can [ … ]
Reserved Words
In Java some identifiers are reserved to associate some functionalities. Such reserved identifiers are called reserved words. There are 57 Reserved words and they are divided into 2 parts:1. Keywords2. [ … ]