Vikrant Sharma 
We will discuss two operators here that are quite useful in JavaScript: theconditional operator (? 🙂 and the typeof operator. Conditional Operator (? 🙂 The conditional operator first evaluates an expression for a true or false value and then executes one of the two given statements depending upon the result of the evaluation. Sr.No Operator … Read more
JavaScript supports the following assignment operators − Sr.No Operator and Description 1 = (Simple Assignment ) Assigns values from the right side operand to the left side operand Ex: C = A + B will assign the value of A + B into C 2 += (Add and Assignment) It adds the right operand to … Read more
JavaScript supports the following logical operators − Assume variable A holds 10 and variable B holds 20, then − Sr.No Operator and Description 1 && (Logical AND) If both the operands are non-zero, then the condition becomes true. Ex: (A && B) is true. 2 || (Logical OR) If any of the two operands are … Read more
JavaScript supports the following comparison operators − Assume variable A holds 10 and variable B holds 20, then − Sr.No Operator and Description 1 = = (Equal) Checks if the value of two operands are equal or not, if yes, then the condition becomes true. Ex: (A == B) is not true. 2 != (Not … Read more
Let us take a simple expression 4 + 5 is equal to 9. Here 4 and 5 are calledoperands and ‘+’ is called the operator. JavaScript supports the following types of operators. Arithmetic Operators Comparision Operators Logical (or Relational) Operators Assignment Operators Conditional (or ternary) Operators Lets have a look on all operators one by … Read more
JavaScript Datatype One of the most fundamental characteristics of a programming language is the set of data types it supports. These are the type of values that can be represented and manipulated in a programming language. JavaScript allows you to work with three primitive data types − Numbers, 123, 120.50 etc. Stringsof text e.g. “This … Read more
Let us take a sample example to print out “Hello World”. We added an optional HTML comment that surrounds our JavaScript code. This is to save our code from a browser that does not support JavaScript. The comment ends with a “//–>”. Here “//” signifies a comment in JavaScript, so we add that to prevent … Read more
Change your system host-name mail.linuxsolutions.org.in vi /etc/hosts 192.168.1.14 mail.linuxsolutions.org.in save&exit vi /etc/sysconfig/network mail.linuxsolutions.org.in save&exit ======================================================================================================= yum install bind bind-chroot caching-nameserver bind-utils ======================================================================================================= ======================CONFIGURE DNS=============================== cp /etc/named.rfc1912.zones /etc/named.conf vim /etc/named.conf // named.rfc1914.zones: // // Provided by Red Hat caching-nameserver package // // ISC BIND named zone configuration for zones recommended by // RFC 1912 section 4.1 … Read more
Being a network administrator requires a deep knowledge about remote login protocols such as rlogin, telnet and ssh. The one I will discuss in this article is ssh, a secure remote protocol which is used to work remotely on other machines or transfer data between computers using SCP (Secure Copy) command. But, what is OpenSSH and how to install it in your Linux distribution? … Read more