Author: Surendra Anne

Review: Whizlabs Practice Tests for AWS Certified Solutions Architect Professional (CSAP)

Whizlabs is the pioneer in providing online training and practice tests for many leading IT certifications. I have been using this site for a long time to prepare for cloud computing and other certifications. Their online community is also thriving with the latest updates, technical discussion, quiz questions, and user’s experience. I was thinking to write this review for a long time but today I felt like it’s a good time to write this review as Whizlabs AWS Certified Solutions Architect Professional Practice Tests are on Udemy now. I’ve already passed the AWS Certified Solutions Architect Associate exam last year. I decided to go for the AWS Certified Solutions Architect Professional certification exam 3 months back. With the 2 months of exam preparation (self-study) and Whizlabs AWS CSAP practice tests, I passed AWS CSAP certification exam. As Whizlabs practice tests helped me a lot to pass my AWS Certified Solutions Architect Professional exam, I decided to pen my review down on Whizlabs AWS Certified Solutions Architect Professional practice tests for you. My AWS CSAP Preparation Journey On deciding to go for AWS CSAP exam, the very first thing on my mind was how to start my preparation. So, first I went through the exam blueprint on the AWS website and understood all the 8 objectives that constitute the exam syllabus. Then I started my preparation with the AWS Certified Solutions Architect Study Guide, moving to AWS...

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How to use ohai/chef-shell to get node attributes

In this post, we will see two excelent tools to get details on system properties within the Chef ecosystem. Ohai is a tool to collect system information and other information for Chef configuration management tool. This information is used to populate in cookbooks before they compile and execute when check client runs on the chef node. Suppose you want to set some swap size depending on swap details are set or not. The chef will never know what the swap size is, it depends on ohai to collect these system details. This is similar to Factor in Puppet, setup module in Ansible. How to access attributes using Ohai? The simplest way to access system information on the node is just to type ohai on chef-node. Example: ohai Output(clipped): [root@rhel74-kitchen ~]# ohai [2018-07-20T06:13:18+10:00] INFO: The plugin path /etc/chef/ohai/plugins does not exist. Skipping... {   "cpu": {     "0": {       "vendor_id": "GenuineIntel",       "family": "6",       "model": "45",       "model_name": "Intel(R) Xeon(R) CPU E5-2690 v3 @ 2.60GHz",       "stepping": "2",       "mhz": "2593.958",       "cache_size": "30720 KB",       "physical_id": "0",       "core_id": "0",       "cores": "1",       "flags": [         "fpu",         "vme",         "de",      ...

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wget download a file to a directory in Linux/Unix

Wget(Website get) is a Linux command line tool to download any file which is available through a network which has a hostname or IP address. With wget command we can download from an FTP or HTTP site as this supports many protocols like FTP, HTTP, https, ftps etc. By default wget command downloads files to the present working directory where you execute the command. This is a bit annoying as we have to move the downloaded file to a specific folder or we have to go the directory where you want that file downloaded and use wget command. In this post, we will see how to download to a specific location in the system. wget command syntax: wget <URL> To get downloaded file to a specific directory we should use -P or –directory-prefix=prefix. From wget man pages.        -P prefix        --directory-prefix=prefix            Set directory prefix to prefix.  The directory prefix is the directory where all other files and subdirectories will be saved to,            i.e. the top of the retrieval tree.  The default is . (the current directory). The syntax for downloading to a specific directory. wget -P <path> <URL> Example: wget -P /opt/mykernel/ Output: wget -P /opt/mykernel/ --2018-06-02 17:56:52-- Resolving,,, ... Connecting to||:443... connected. HTTP request sent, awaiting response......

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My name is Surendra Kumar Anne. I hail from Vijayawada which is cultural capital of south Indian state of Andhra Pradesh. I am a Linux evangelist who believes in Hard work, A down to earth person, Likes to share knowledge with others, Loves dogs, Likes photography. At present I work at Bank of America as Sr. Analyst Systems and Administration. You can contact me at surendra (@) linuxnix dot com.