How to install GoAccess web log analyzer with Nginx on Linux or Unix

G oAccess is a real-time Apache/Nginx/Lighttpd web log analyzer and interactive viewer that runs in a terminal and provides fast and valuable HTTP statistics for system administrators that require a visual report on the fly.…

How to run multiple commands in sudo under Linux or Unix

I am a new Linux user. How do I run two commands from a bash shell? I need to run apt-get update and apt-get -y upgrade without typing sudo command two times from a command…

How to run command or code in parallel in bash shell under Linux or Unix

How do I run commands in parallel in a bash shell script running under Linux or Unix-like operating system? How can I run multiple programs in parallel from a bash script?   bash shell,  You…

How to install and use vtop graphical terminal activity monitor on Linux

T he vtop is a graphical activity monitor for the command line written in Node.js. How do I install vtop on my Linux server?   From the project page: Command-line tools like “top” make it…

How to analyze Nginx configuration files for security misconfiguration on Linux or Unix

H ow do I install Gixy for Nginx configuration static analyzer on GNU/Linux operating system to to prevent security misconfiguration and automate flaw detection?   From the project page: Gixy is a tool to analyze…

How to get domain name from URL in bash shell script

H ow can I extract or fetch a domain name from a URL string (e.g. https://www.cyberciti.biz/index.php) using bash shell scripting under Linux or Unix-like operating system?   You can use standard Unix commands such as…

How to ping and test for a specific port from Linux or Unix command line

I wanted to see if a specific port of a desktop computer or server is open from a Linux or Unix command line shell. How do I ping a specific port? Is it possible possible…

How to use sed to find and replace text in files in Linux / Unix shell

I am a new Linux user. I wanted to find the text called “foo” and replaced to “bar” in the file named “hosts.txt.” How do I use the sed command to find and replace on…

How to unzip a zip file using the Linux and Unix bash shell terminal

I grabbed a master.zip file from the Github public repo on my Linux VPS hosted at AWS. How do I unzip the file using bash ssh terminal? How can I unzip a file on Ubuntu/CentOS/Debian…

How to use the cURL command to do a POST data to fields on Linux or Unix

H ow do I use the cURL command on Linux or Unix to post data i.e. upload something on Linux or Unix? How do I make a POST request with the cURL Linux command-line to…