Javarevisited

Hello guys, if you are preparing for Developer and DevOps interview and looking for Linux questions for interviews then you have come t...

The netstat command is one of the most essential and useful networking command for Linux users. It is a general, all purpose network infor...

Hello guys, if you want to learn Linux but not sure how to start then you have come to the right place. Earlier, I have shared  best place...

Hello guys, you might have read many articles about popular Linux commands on the internet but this article is a bit different. In this art...

Linux is the #1 operating system for hosting real world production application. Most of the real world Java application in big IBs are host...

SED command in UNIX stands for stream editor and it can perform lots of functions on file like searching, find and replace, insertion or d...

Symbolic links, Symlink or Soft link in Unix are a very important concept to understand and use in various UNIX operating systems e.g. Lin...

chmod command in UNIX or Linux is used to change file or directory permissions . This is one of many UNIX basic commands which a UNIX or...

The telnet is one of the most useful Linux networking commands , which is used to check if a server is listening on a particular port and ...

Sorting is one of the essential tasks we always need to perform and UNIX or Linux has great support for sorting by using sort command. No m...

In Linux, many times, you want to find out the PID of a process that is listening on a port e.g. if multiple tomcat servers are running o...

Whenever we execute ls command in UNIX you might have observed that it list file name with lot of details e.g. stock_options:~/test ...

Vim or VI editor tutorial in UNIX  VI Editor is like notepad in UNIX but it’s extremely powerful and has a sophisticated feature to work...

JAVA_HOME is a system environment variable that represents the JDK installation directory. When you install JDK in your machine (Windows, ...

Both TCP/IP and UDP are very popular networking protocol and in this era of the internet and a connected world, they become even more impor...

Hello guys, if you want to master the  VI editor or Vim and looking for the best online courses then you have come to the right place. Earl...

Hello guys, if you are preparing for CompTIA Linux+ certification and looking for the best online courses and practice tests to pass this c...

Hello guys, if you want to learn the Red Hat OpenShift platform and looking for the best OpenShift courses then you have come to the right ...

Hello guys, if you want to learn Linux and Ubuntu Operating system in 2025 and looking for the best resources like books, online courses, an...

I have been sharing programming books in this blog for a long time, starting with core Java ; I moved to other related technology, like  Sp...