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I am Harshal, a passionate and creative developer from 🇮🇳 with a strong interest in MERN and DevOps.
Full stack developer with experience in developing and managing web applications. Reactjs, Nextjs, Nodejs, Expressjs, CSS, HTML, JavaScript, MongoDB, Docker, and AWS .
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Callback Function A function passed as an argument to another function, which is then executed inside that function.Callbacks are commonly used in asynchronous programming, where operations (like I/O tasks) are completed without blocking the main thr...
JavaScript is a language that excels at handling asynchronous operations. Its ability to manage tasks like API calls, file reading, and timers without blocking the main thread is powered by a fundamental concept known as the event loop.In this blog p...
Introduction An AWS IAM role is a set of permissions that define what actions and resources a user, service, or application can access within the Amazon Web Services (AWS) environment. Let's Create IAM Role: Go to the AWS Management Console at aws....
Introduction An AWS IAM role is a set of permissions that define what actions and resources a user, service, or application can access within the Amazon Web Services (AWS) environment. Let's Create IAM Role: Go to the AWS Management Console at aw...
Introduction 1> IAM allows you to create and manage individual users within your AWS account. 2> Each user is assigned unique security credentials, such as a username and password or access keys.3> This level of granularity ensures that each entity a...
Linux is an open-source Operating system based on Unix. It was first developed by Linus Torvalds in 1991 and is now widely used in various computer systems, from desktop computers to servers, and even in mobile devices.
One of the main advantages of Linux is its flexibility and customizability.
It has many flavors like Ubuntu, CentOS, Kali-Linux, Fedora, etc.
1> pwd : - Show your current directory.
2> ls :- It is used to list all files and folders present in a directory.
ls -a :- It is used to list all files and folders including hidden files and folders.
ls -R :- It is used to list the contents of the subdirectories recursively.
3> cd :- This command is used to change the directories.
cd <path> :- To change the directory to the provided path.
cd .. :- To change the directory to one step back.
cd ~ or cd :- Used to bring the user to the home directory.
4> mkdir :- This command is used to create the directory.
5> mv :- This command is used to rename file or directory.
mv Original_name New_name
6> rm :- This command is used to remove/delete files.
rm -r :- Delete a non-empty file directory and all the files within it.
rmdir :- Delete a directory.
7> cp :- This command is used to copy a directory.
cp -r dirname new_dirname
8> cat :- This is used to display content inside the file.
9> touch :- This command is used to create a file.
touch file_name
10> clear :- This command is used to clear the terminal.
10> sudo :-This is used to allow a regular user to run programs with the security privileges of the superuser or root user.