Complete guide of BlockChain Certification Courses Tutorials and Training


In the simplest terms, Blockchain will be delineated as an information structure that holds transactional records and whereas making certain security, transparency, and decentralization. You’ll additionally think about it as a chain of records keep within the types of blocks that are controlled by no single authority.

What is BlockChain?

Blockchain can be defined as a chain of blocks that contains information. The technique is intended to timestamp digital documents so that it’s not possible to backdate them or temper them. The purpose of blockchain is to solve the double records problem without the need for a central server.

The blockchain is used for the secure transfer of items like money, property, contracts, etc. without requiring a third-party intermediary like a bank or government. Once data is recorded inside a blockchain, it is very difficult to change it.

Why blockchain is important?

Business runs on data. The quicker it’s received and also the more accurate it’s, the better. Blockchain is ideal for delivering that data as a result of it provides immediate, shared and fully transparent data keep on an immutable ledger which will be accessed only by permission network members. A blockchain network will track orders, payments, accounts, production, and far more and since members share one view of the reality, you’ll be able to see all details of a transaction end-to-end, providing you with greater confidence, also as new efficiencies and opportunities.

How does it work?

Blockchain could be a system of recording data in an exceedingly means that produces it tough or not possible to vary, hack, or cheat the system. Each block within the chain contains a variety of transactions, and each time a brand new dealing happens on the blockchain, a record of that dealing is supplementary to each participant’s ledger.

Blockchain used for

Blockchain could be a system of recording data in a very method that creates it tough or not possible to change, hack, or cheat the system. A blockchain is basically a digital ledger of transactions that are duplicated and distributed across the complete network of computer systems on the blockchain.

Benefits and needs of Blockchain:

Resilience: Blockchains are often replicated architecture. The chain is still operated by most nodes in the event of a massive attack against the system.

Time reduction: In the financial industry, blockchain can play a vital role by allowing the quicker settlement of trades as it does not need a lengthy process of verification, settlement, and clearance because a single version of agreed-upon data of the shared ledger is available between all stack holders.

Reliability: Blockchain certifies and verifies the identities of the interested parties. This removes double records, reducing rates, and accelerates transactions.

Unchangeable transactions: By registering transactions in chronological order, Blockchain certifies the unalterability, of all operations which means when any new block has been added to the chain of ledgers, it cannot be removed or modified.

Fraud prevention: The concepts of shared information and consensus prevent possible losses due to fraud or embezzlement. In logistics-based industries, blockchain as a monitoring mechanism act to reduce costs.

Security: Attacking a traditional database is the bringing down of a specific target. With the help of Distributed Ledger Technology, each party holds a copy of the original chain, so the system remains operative, even a large number of other nodes fall.

Transparency: Changes to public blockchains are publicly viewable to everyone. This offers greater transparency, and all transactions are immutable.

Collaboration: Allows parties to transact directly with each other without the need for mediating third parties.

Decentralized: There are standards rules on how every node exchanges the blockchain information. This method ensures that all transactions are validated, and all valid transactions are added one by one.

BlockChain applications to know:

  • Secure sharing of medical data
  • NFT marketplaces
  • Music royalties tracking
  • Cross-border payments
  • Real-time IoT operating systems
  • Personal identity security
  • Anti-money laundering tracking system
  • Supply chain and logistics monitoring
  • Voting mechanism
  • Advertising insights
  • Original content creation
  • Cryptocurrency exchange
  • Real estate processing platform

Blockchain Course

In this course, we tend to are going to focus on the basics of Blockchain development and also the popular implementation of the technology referred to as Ethereum. By the top of this course, you may understand everything you would like to know to be productive with blockchain development as well as the way to created and put together your development environment from scratch.

Advantages of BlockChain

Here are some advantages of…

  • With blockchain, your business process will be better protected with the help of a high level of security.
  • The hacking threats against your business will also be reduced to a greater extent.
  • As blockchain offers a decentralized platform, there is no need to pay for centralized entities or intermediaries’ services.
  • Enterprise blockchain technology enables organizations to use different levels of accessibility.
  • Organizations can do faster transactions with the help of blockchain.
  • Account reconciliation can be automated.
  • The transactions done are transparent and hence, easy to track.

What is the “Blockchain” Certification?

This certificate can give you with the chance to create a foundation towards turning into a strategic business partner inside your organization and together with your clients.

You may have heard of individuals implementing blockchain in several industries and taking this technology a lot of seriously in varied use cases, however, hardly you’ve got heard regarding the benefits of certification and a career in blockchain.

Scope of Blockchain:

Blockchain, internet of things and lifestyle people using connected devices and touch screen interfaces, robots and smart industry

Blockchain may be defined as a decentralized and distributed digital ledger that’s used to record transactions across several computers. In easy terms, we are able to contemplate any record inside Blockchain technology as a document shared with a group of individuals. (computers/servers that are also known as blocks).

Here you can see the Agenda of Blockchain:


In the Age of Technology, this is what democracy is supposed to look like. Not a day goes past that we do not hear laments about the stranglehold that big technology firms like Apple, Google, and Facebook have over our online identities. The Bitcoin is that the 1st productive implementation of blockchain. Today, the globe has found applications of blockchain technology in many industries, wherever trust while not the involvement of centralized authority is desired.

If you wanna learn about related this course, then I would suggest you go through DevOpsSchool courses which is a great platform to learn.

Thank you!

Tagged : / / / /

How to Become an Android App Developer?

Android is an open-source operating system, based on the Linux kernel and used in mobile devices like smartphones, tablets, etc. Various applications like games, music player, camera, etc. are built for these smartphones for running on Android. Google Play Store features quite 3.3 million apps.

You must admit that learning Android app development isn’t easy as it look. For the non-programmer there are several steps in the process, and even experienced programmers have quite a bit to learn when adopting Android. If you’re interested in developing new and innovative applications for the world’s #1 mobile platform – here are my six steps to becoming an Android app developer.

Now the questions arise are, Why Android? How to start? Where to start? And many more Question like this. So in this particular blog we will discuss in all this topics and I will try best to answer them all. Let’s start-

Who is an Android App Developer?

An Android App Developer is a Software Developer expertise in designing applications for the Android for mobile platform. This is the only competitor to Apple’s app store. Their job revolves around creating the apps we use on our smartphones and tablets. It is a skilled, entry-level position.

According to the recent studies, demand for Software Developers, which includes Android Developers, is expected to rise a whopping 21 percent through 2024. As an Android developer, you need to be very clear with your job posting and your responsibilities. So, here are some key roles and responsibilities of an Android Developer, that define who can be a successful developer.

These roles and responsibilities define who can be a successful developer.

There are several of specific tasks that an Android app Developer execute to develop Android applications. There are some of the following duties of Android app Developer-

Design and Build Advanced Applications for the Android Platform

In this an Android Developer dedicates most of their time. This development includes of using C / C++, JavaScript and a few other tools to write program code. It requires extreme attention, because one mistyped line of code can spoil the whole program.

Collaborate with Cross-Functional Teams to Define, Design and Ship New Features

An Android App Developer works with Product Development, User Experience and several other departments to define and design new features that users actually want.

Troubleshoot and Fix Bugs in New and as well as on Existing Applications

An Android App Developer’s job isn’t done after an application is completed. In fact they are also responsible for troubleshooting bugs that arise when the app is shipped to users in near future.

Continuously Discover, Evaluate and Implement New Development Tools

Android App Developers have to be up to date by latest trends in mobile application. They have to discover new tools as they hit the market. This requires the ability to adapt to an ever-changing environment.

Work With Outside Data Sources and APIs

An Android App developer spends so much amount of time working with outside data sources and APIs that provided.

How to become an Android App Developer?

Android App Developers can follow an easy pathway to become a successful Android App Developer as they already have an idea about how the applications work.  However, If you are someone, want to start your journey towards becoming an Android App Developer and really gain an advantage in the job market, then start working on these advanced skills many employers prefer in their Android App Developers career-

  • Should have strong knowledge of Android SDK and different versions of Android.
  • Proficient in programming languages like Java/Kotlin.
  • Strong knowledge of Android UI design principles, patterns, and best practices.
  • Decent knowledge with SQL.
  • Proficient understanding of code versioning tools, such as Git.
  • Familiarity with RESTful APIs that connects Android applications to back-end services.
  • Experience working with offline storage, threading, and performance tuning.
  • Possess the ability to design applications around UI such as touch.
  • Ability to understand business requirements and translate them into technical requirements.
  • Familiarity with cloud message APIs and push notifications.
  • Understanding of Google’s Android design principles and interface guidelines.
  • Familiarity with continuous integration.

At last, mastering these skills will definitely help you grow as a successful Android App Developer. And also do note that Android is one such domain where jobs are never out of stock. So start now to be an amazing developer.

Job roles

  • Mobile App Developer
  • Android Engineer
  • Mobile Architect
  • Embedded Software Engineer – Mobile
  • Lead Software Engineer- Mobile
  • Android Developer
  • Android Engineer
  • Mobile Developer

Why you should choose Android App Developer as a Career?

There are so many reasons why you should go for Android Development. Some notable ones among them are listed below:


According to the recent studies, the national avg. salary for Software Developers, which includes Android Developers, is $109,300. Those in the bottom 10 percent make less than $57,300, while those in the top 10 percent make more than $183,700. The three states with the highest median salary for Android Developers are California at $128,700, Washington at $123,400 and Massachusetts at $113,600.

Android is an evolving platform

Applications that are created are gaining lot of popularity and are rated top on the Google play store. With the time, Google keeps changing certain functionalities and releasing the new versions. So, you get updates yourself on a regular basis to improvised features that are added to your application. This is also a challenging task to develop, something that can catch the eye of any user.

Easy to learn

The developers out there will definitely feel that the time invested in learning how to develop an Android application is comparatively less than what they invest in other technologies. Have the knowledge of Java and scripting languages like Perl, PHP, and the job is done.


By learning Android development in 2021, you open up for many career opportunities such as freelancing, becoming an indie developer, or working for high profile companies like Google, Amazon, Facebook and more. The demand for native Android developers is still very high, and learning Android development has never been easier thanks to increases in online learning materials. Choosing Android App Developer as Career is a good option in 2021, If you want to learn or want to become an Android App Developer than I would like to suggest you DevOpsscool, One of the best option for this course, provide you best learning experience with in-hand practices, Experts are there to solve your query. Don’t wait for the right time to come, Start your learning today.

I Hope this blog is helpful for you and enough knowledge of Android App Developer.

Thank you!!

Tagged : / / / / / /

List of Top 5 Web servers in 2021

  1. Apache
  2. Nginx
  3. Cloudflare Server
  4. LiteSpeed
  5. Microsoft-IIS
  1. Apache: The most popular web server is Apache HTTP Server, which is used by 34.1% of websites in 2021. The BuiltWith Internet services corporation has 62,624,313 live websites that use Apache. 

2. Nginx: Is the second most prominent server, accounting for 33.7% of all active websites in 2021. The web server is distributed under a BSD-style license.

3. Cloudflare Server: Supports web protocols, including SPDY and HTTP/2 and acts as a reverse proxy for web traffic. It is getting more and more popular over years with 18% in 2021.

4. LiteSpeed: Uses the same configuration format as Apache HTTP Server and is compatible with most Apache features. An open source variant is also available. As of April 2020, LSWS was used by 47.6% of websites using HTTP/3. It also sees an increasing trend and takes 18% of the total web server usage.

5. Microsoft-IIS: Supports HTTP, HTTP/2, HTTPS, FTP, FTPS, SMTP and NNTP. It took by about 7% of the total web servers in 2021.

What means web server?

  • A Web server is a program that generates and transmits responses to client requests for Web resources.
  • A Web server is a program to satisfy client requests for web resources.

What are Web servers examples?

Web servers examples are: Apache web server, IIS, NGINX, Tomcat, PWS.

What are the different types of Web servers?

The most prominent types of Web Servers available in the markets are:

  1. Apache HTTP Server Web Server
  2. Internet Information Services (IIS) Web Server
  3. Lighttpd Web Server
  4. Sun Java System Web Server
  5. Jigsaw Server Web Server
  6. LiteSpeed server Web Server
  7. Node.js Web Server

What are the functions of Web server?

  • Read any data sent by the user.
  • Look up any other information about the request that is embedded in the HTTP request.
  • Process the request.
  • Generate the result.
  • Format the result inside a document.
  • Set the appropriate HTTP response parameters.
  • Send the document back to the client as HTML file.

Tagged : / / / / / / / / / / / /

Jetty – Java-based HTTP server

Jetty is a 100% pure Java-based HTTP server and servlet container (application server). Jetty is a free and open source project under the Apache 2.0 License. Jetty is used by several other popular projects including the Geronimo application server and by the Google Web Toolkit plug-in for Eclipse.
Jetty deployment focuses on creating a simple, efficient, embeddable and pluggable web server. Jetty’s small size makes it suitable for providing web services in an embedded Java application.

In January 2009, Webtide announced that Jetty would be moving to Eclipse Foundation. The Jetty project has been created, and the initial Jetty 7 code (with a refactored org.eclipse.jetty package) was checked into Jetty Subversion at Eclipse.
The Java support in Google App Engine is built on Jetty.

Jetty provides an HTTP server, HTTP client, and javax.servlet container. These components are open source and available for commercial use and distribution.
Jetty is used in a wide variety of projects and products. Jetty can be embedded in devices, tools, frameworks, application servers, and clusters. See the Jetty Powered page for more uses of Jetty.

The core Jetty project is hosted by the Eclipse Foundation. The codehaus provides Jetty accessories , integrations, and extensions, as well as hosting older versions of Jetty. See the About page for information about the project structure.

Features Jetty

  • Full-featured and standards-based
  • Open source and commercially usable
  • Flexible and extensible
  • Small footprint
  • Embeddable
  • Asynchronous
  • Enterprise scalable
  • Dual licensed under Apache and Eclipse



Tagged : / /

Top 5 Log Monitoring Tools | List of Log Monitoring Tools | scmGalaxy

These days there are various kinds of tools used by professionals in Software industry. From CI tools to Virtualization, to Issues, bug tracking tools to various others tools, the lists goes on and on. Thus, it’s really a tough task for them to select best tools as per their needs. So, today I am going to help System Administrators and operations by providing them the lists of top log monitoring tools.
But before that lets see, what is log monitoring ?
Log monitoring is a process of monitoring and understanding the state of the system, server, network, security devices and different applications and how they are working. Actually when these servers and different applications runs, they generate log files and events like Errors, problems, and more information is constantly logged and saved for analysis as text or binary files in the system. System admin keep reviewing these log files on daily basis so they can understand the condition and functioning of systems and different applications. But reviewing all those log files on daily basis is not an easy task, to do this laborious task log monitor needs to be set on those logs which automatically
monitor, review, analyze and generate reports as per the instructions set by System Admin.
As you saw how helpful this is for system admin but to find a good tool for this process is not an easy task. So, without wasting any time let’s check out the top 5 monitoring tools.
1. Logstash
  • Extended functionality via plugins.
  • Free and open source.
  • Filters are code.
  • Great integration with other Elastic products.

2. Fluentd
  • Handles up to 50,000 messages per second at peak time
  • Data filtering and alerting
  • Apache 2.0 License project
  • Simplify and scale data pipeline management with tags
  • More than 200 community-contributed plugins
  • Real-time monitoring and alerts system
  • Store data in multiple systems
  • Collect and correlate web server access logs and application error logs


3. Loggly

  • Text-based logs from any source
  • Custom source groups
  • Point-and-click trending graphs
  • Automated filters and event parsing
  • Full-system RESTful API to integrate with other applications
  • Unlimited saved searches and users
  • Adaptable interface with multiple views, pages and workspaces
  • Unlimited custom dashboards based on any search
  • Built-in customizable alerts with triggers

4. Graylog2
  • Leverages Java, Scala and ElasticSearch technologies
  • Central syslog monitoring
  • Interactive API browser
  • Application debugging
  • Exception monitoring
  • API analytics
  • Intuitive search interface
  • Comprehensive dashboard

5. Splunk
  • Works with Hadoop & NoSQL
  • Setup standard searches as real-time alerts
  • Trigger automatic responses
  • Scale from a single server to multiple data centers
  • Deployable to on premise sites, hybrid-cloud, and/or private and public cloud based infrastructures
  • Securely make data available
  • Supports various use cases including log consolidation/retention, security, compliance reporting, and more
  • Perform ad hoc queries
So, this is the list my top log monitoring tools, I hope you find this useful and if not than feel free to share your thoughts in comment section below.
Tagged : / / / / / / / / / / / / / / /

How to Setup SVN Server with Apache2 in Ubantu?


This tutorial is to setup the SVNServer from base using Apache2 in Ubantu only.

> sudo apt-get update

> sudo apt-get install subversion apache2 libapache2-svn apache2-utils

> sudo addgroup subversion

> sudo mkdir /home/svn

> sudo chown -R www-data:subversion /home/svn

> sudo chmod -R g+ws /home/svn

> sudo svnadmin create /home/svn/myWebsite

sudo vim /etc/apache2/mods-available/dav_svn.conf

& add the following entry at the end of file.

<Location /svn/myWebsite> DAV svn SVNPath /home/svn/myWebsite AuthType Basic AuthName "myWebsite subversion Repository" AuthUserFile /etc/subversion/passwd <LimitExcept GET PROPFIND OPTIONS REPORT> Require valid-user </LimitExcept> </Location>

sudo htpasswd -c /etc/subversion/passwd rajesh

sudo chown -R www-data:subversion /home/svn/myWebsite

sudo chmod -R g+rws /home/svn/myWebsite

sudo /etc/init.d/apache2 restart

sudo htpasswd /etc/subversion/passwd user1

sudo /etc/init.d/apache2 restart


Now you can access the SVN Server using….

If you are still not able to open the url, that means you have IPtables services running and stopping you to access the server. For testing, you can stop the sudo ufw stop

Tagged : / / / / / / / / / / / / / /

Server configuration monitoring and diagnostics


ScriptRock’s GuardRail

As DevOps gets more agile, infrastructure needs unit tests too. Enterprise startup ScriptRock offers cloud-hosted testing configuration tools to get you started.

Tagged : / / / / / /




Step to setting subversion server for administrator:-
1. Check to see if subversion is installed:-
# rpm -q subversion
#svn –version
svn, version 1.5.2 (r32768)
compiled Oct 4 2008, 02:48:59
If you see “package subversion not installed” you will need to install subversion before
proceeding. Otherwise you should see something similar to “ subversion-1.4.4-1.fc7”
2. Login in as root:-
3. Create a directory to hold all your repositories:-
#mkdir /home/svnserver/svn
4. Create a repository. In this example we will create a repository called “repositories”:-
# svnadmin create /home/svnserver/svn
5. list the repository files and directory :-
conf db format hooks locks README.txt
6. Create a SVN user
6.1 vi /home/svnserver/svn/conf/svnserve.conf
In that file add these three lines:
Note:- Do not leave space before this three lines.
6.2 Create a password file.
vi /home/svnserver/svn/conf/passwd
In that file add a line for your user:
# add users in the format : user = password
user = mypassword
7. Create a directory to hold all your project in repositories:-
# mkdir /home/svnserver/svn/myproject
8. Try importing source code into the repository. Change to a directory containing the files you want to
check in.
# svn -m “Intailly importing” import /home/svnproject/source/myproject file:///home/svnserver/svn/myproject
9. Start the SVN Server as Daemon:-
#svnserve -d
10. Try checking it out of the repository:- (Check out)
home/user/source# svn co svn://
11. Try checking it in of the repository:- ( Check in)
#svn ci -m “log message” /home/user/source/myproject/

Introduction of CGI | What is Common Gateway Interface (CGI)?


Any Server will (mostly) do   

  • CGI will not work without a server
  • Your Server must allow CGI
  • Your CGI application must be written in a language supported by your server
  • You can use probably your existing web server
  • If you need to test on your local computer, you may install WAMP/XAMPP
  • Each Server has a particular requirements about running  CGI Applications

Experience in relevant programming language

  • Perl
  • Php
  • Unix Shell
  • c/c++

What is CGI
Common Interface Gateway

  • How web browsers submit forms and interact with programs on the server
  • Used for simple interaction applications
  • Can be used with any programming language
  • Often called “CGI Scripts”
  • Can be written in any language
  • Run in the server, not in a web browser
  • Must follow server requirements for running applocations


  • CGI will not work without a web server
  • Your Server must allow CGI
  • Your CGI application must be written in a language supported by your server
  • You can use  your existing web server
  • If you need to test on your local computer, you may install WAMP/XAMPP

Some Guidelines for Unix/Apapche users

  1. Permission – 755 ( aka rwxr-xr-x)
  2. Filename associates
  3. .cgi, .pl, .php …etc
  4. .httaccess
  5. Options+ExecCGI
  6. AddHandle cgi-scripts .cgi
  7. SetHander cgi-script
  8. Access to server log

Some Guidelines for Windows Servers
Many Windows servers do not support perl or PHP
May require ASP or C#
Usually require specific filename extension
.pl for perl
.php for php
.asp or .aspx for ASP
Access to error log
Check with your server web site or support staff

How CGI works

  1. Browser Communicates with server over HTTP
  2. Browser sends a request to the server consisting of header and optional body
  3. Server sends information to the CGI application
  4. Environment variables
  5. Body may be sent in the STDIN stream
  6. Server sends a response consisting of a header and a body
Tagged : / / / / / / / / / / /

Oracle RAC Cheat Sheet | Oracle RAC Guide | Oracle RAC Reference


Check CRS Status

[root@racnode1 ~]#crsctl check crs
Check Clusterware Resources
[root@racnode1 ~]# crs_stat -t -v
Stopping the Oracle Clusterware Stack on the Local Server
[root@racnode1 ~]# /u01/app/11.2.0/grid/bin/crsctl stop cluster
CRS-2673: Attempting to stop 'ora.crsd' on 'racnode1'
Stop Oracle Clusterware stack on all servers in the cluster
[root@racnode1 ~]# crsctl stop cluster -all
Starting the Oracle Clusterware Stack on the Local Server
[root@racnode1 ~]# /u01/app/11.2.0/grid/bin/crsctl start cluster
CRS-2673: Attempting to start 'ora.crsd' on 'racnode1'
Start Oracle Clusterware stack on all servers in the cluster
[root@racnode1 ~]# crsctl start cluster -all
Check Cluster Nodes
[oracle@racnode1 ~]$olsnodes -n
Confirming Oracle ASM Function for Oracle Clusterware Files

If you installed the OCR and voting disk files on Oracle ASM, then use the following command syntax as the Grid Infrastructure installation owner to confirm that your Oracle ASM installation is running:

[oracle@racnode1 ~]$srvctl status asm -a
Check Oracle Cluster Registry (OCR)
[oracle@racnode1 ~]$ocrcheck
Check Voting Disk
[oracle@racnode1 ~]$crsctl query css votedisk
Check Status Oracle Enterprise Manager
[oracle@racnode1 ~]$emctl status dbconsole
Start Oracle Enterprise Manager
[oracle@racnode1 ~]$emctl start dbconsole
Stop Oracle Enterprise Manager
[oracle@racnode1 ~]$emctl stop dbconsole
All Oracle Instances – (Database Status)
[oracle@racnode1 ~]$ srvctl status database -d racdb
Single Oracle Instance – (Status of Specific Instance)
[oracle@racnode1 ~]$ srvctl status instance -d racdb -i racdb1
Start/Stop All Instances with SRVCTL
[oracle@racnode1 ~]$ srvctl stop database -d racdb
[oracle@racnode1 ~]$ srvctl start database -d racdb
Node Applications – (Status)
[oracle@racnode1 ~]$ srvctl status nodeapps
Node Applications – (Configuration)
[oracle@racnode1 ~]$ srvctl config nodeapps
List all Configured Databases
[oracle@racnode1 ~]$ srvctl config database
Database – (Configuration)
[oracle@racnode1 ~]$ srvctl config database -d racdb -a
ASM – (Status)
[oracle@racnode1 ~]$ srvctl status asm
ASM – (Configuration)
[oracle@racnode1 ~]$srvctl config asm -a
TNS listener – (Status)
[oracle@racnode1 ~]$ srvctl status listener
SCAN – (Status)
[oracle@racnode1 ~]$ srvctl status scan
SCAN – (Configuration)
[oracle@racnode1 ~]$ srvctl config scan
VIP – (Status of Specific Node)
[oracle@racnode1 ~]$ srvctl status vip -n racnode1
[oracle@racnode1 ~]$ srvctl status vip -n racnode2
VIP – (Configuration of Specific Node)
[oracle@racnode1 ~]$ srvctl config vip -n racnode1
[oracle@racnode1 ~]$ srvctl config vip -n racnode2
Configuration for Node Applications – (VIP, GSD, ONS, Listener)
[oracle@racnode1 ~]$ srvctl config nodeapps -a -g -s -l
Verifying Clock Synchronization across the Cluster Nodes
[oracle@racnode1 ~]$ cluvfy comp clocksync -verbose
Tagged : / / / / / / / / / /