Being A Programmer

In this article we are going to review some of the useful and frequently used Linux or Unix commands for Linux System Administrators that are used in their daily life. This is not a complete but it’s a compact list of commands to refer when needed. Let us start one by one how we can use those commands with examples. 1. Uptime Command In Linux uptime command shows since how long your system is running and the number of users are currently logged in and also displays load average for 1,5 and 15 minutes intervals. # uptime 08:16:26 up 22 min, 1 user, load average: 0.00, 0.03, 0.22 Check Uptime Version Uptime command don’t have other options other than uptime and version . It gives information only in hours:mins if it less than 1 day. [tecmint@tecmint ~]$ uptime -V procps version 3.2.8 2. W Command It will displays users currently logged in and their process along-with shows load averages . also shows the login name ,

Introduction to Probability Probabilities are associated with experiments where the outcome is not known in advance or cannot be predicted. For example, if you toss a coin, will you obtain a head or tail? If you roll a die will obtain 1, 2, 3, 4, 5 or 6? Probability measures and quantifies "how likely" an event, related to these types of experiment, will happen. The value of a probability is a number between 0 and 1 inclusive. An event that cannot occur has a probability (of happening) equal to 0 and the probability of an event that is certain to occur has a probability equal to 1.(see probability scale below). In order to quantify probabilities, we need to define the  sample space  of an experiment and the  events  that may be associated with that experiment. Sample Space and Events The  sample space  is the set of all possible outcomes in an experiment. Example 1:  If a die is rolled, the sample space S is given by S = {1,2,3,4,5,6} Example 2:  If two coins

Google isn't just for hypochondriacs looking up their symptoms or for trying to find a cool new restaurant. By just entering a few simple search terms, you can use Google to help plan and organize your life. It is  amazing . 1.) You can use Google as a timer, just set the time in the search bar as shown here. 2.) Google will also help you calculate your tips. 3.) You can find out what date any holiday falls on. 4.) Google will also find movie release dates for you. 5.) You can find full schedules for your favorite television shows. 6.) Google will also find the songs of your favorite bands. 7.) You can use the search engine to find what books your favorite authors wrote. 8.) It'll look up flight information for you. 9.) Do you know what time the sun rises? It'll tell you. 10.) It'll also give you information on your

Question :  is there any difference between declaring a variable var a = 0 ; //1 and this way a = 0 ; //2 or window . a = 0 ; //3 in global scope? Soloution:      Yes, there are two differences, though in practical terms they're not usually big ones.  three statements explained var a = 0 ; ...creates a variable on the  variable object  for the global execution context, which is the global object, which on browsers is aliased as  window  (and is a DOM window object rather than just a generic object as it would be on non-browser implementations). The symbol  window  is, itself, actually a property of the global (window) object that it uses to point to itself. The upshot of all that is: It creates a property on  window  that you cannot delete. It's also defined before the first line of code runs (see "When  var  happens" below). Note that on IE8 and earlier, the property created on  window  is not  enumerable  (doesn't show up in  for..in