Example of linux find command Find Command is one of the most important and frequently used command command-line utility in Unix-like operating systems. Find command is used to search and locate the list of files and directories based on conditions you specify for files that match the arguments. Find can be used in a variety of … Read more
In July 1992, Tim Berners-Lee introduced a new Internet protocol, the Hypertext Transfer Protocol (HTTP), to improve the efficiency of document retrieval on the World Wide Web. HTTP is based on the concept of hypertext, a term coined by information theorist Ted Nelson. Its origins can be traced to Vannevar Bush’s utopian vision for a … Read more
In January 1969, the Advanced Research Projects Agency of the Department of Defense (ARPA) awarded a contract to Bolt, Beranek and Newman (BBN) to design and construct a communications network. By the end of 1969, an experimental ARPANET was operational between four university nodes. This system was the forerunner of the Internet. The idea for … Read more
On 19 February 1946 in London, England, computing pioneer and World War II code-breaker Alan Turing delivered the complete design of the Automatic Computing Engine (ACE), a stored-program computer. Turing may be the first to conceive of the electronic computer as a universal machine, with the flexibility to logically manipulate symbols to solve a variety … Read more
The summer of 1959 was an exciting time for electrical and computer technologies. On June 3rd, President Dwight Eisenhower sent a message to Canadian Prime Minister John Diefenbaker by means of a radio signal bounced off the moon. At the time, this technological tour de force evoked smiles for the absurdity of sending a message … Read more
Sublime Text is one of the powerful text editor available for CentOS 7. Sublime Text can be used as text or source code editor for web and software development. You can also extend the functionality of Sublime Text using plugins. Prerequisites Before you start to install Sublime Text 3 on CentOS 7. You must have … Read more
Change is the only constant. This applies in your professional life as well. Up-scaling yourself is a need nowadays, the reason is pretty simple, technology is evolving very quickly. I have listed top 10 trending technologies, which is expected to acquire a huge market in 2020. So, let’s make a new year resolution to master any … Read more
shell embedding Shells can be embedded on the command line, or in other words, the command line scan can spawn new processes containing a fork of the current shell. You can use variables to prove that new shells are created. In the screenshot below, the variable $var1 only exists in the (temporary) sub shell. You … Read more
In this post we learn to manage environment variables in the shell. These variables are often needed by applications. $ dollar sign Another important character interpreted by the shell is the dollar sign $. The shell will look for an environment variable named like the string following the dollar sign and replace it with the … Read more
In this post we put more than one command on the command line using control operators. We also briefly discuss related parameters ($?) and similar special characters(&). ; semicolon You can put two or more commands on the same line separated by a semicolon ; . The shell will scan the line until it reaches … Read more