The ip command is a versatile tool for managing and querying network interfaces and IP addresses on a Linux system. Here are some common examples of using the ip command: Display information about all network interfaces: $ ip addr show Display information about a specific network interface: $ ip addr show eth0 Replace eth0 with … Read more
You can restart the Iptables firewall on a CentOS Linux server by executing the following steps: Stop the Iptables firewall service: $ sudo service iptables stop Flush all current Iptables rules: $ sudo iptables -F Start the Iptables firewall service: $ sudo service iptables start Alternatively, you can restart the Iptables firewall service by executing … Read more
You can reload the Squid proxy server configuration without restarting the Squid daemon by sending a SIGHUP signal to the Squid process. This will cause Squid to reread its configuration file, squid.conf, and apply any changes. Here’s how to reload the Squid proxy server on a Linux system: Find the process ID (PID) of the … Read more
The sed command is a powerful tool in Linux and Unix for text processing and manipulation. You can use the sed command to substitute multiple patterns, or to find and replace text within a file. Here’s how you can use sed to substitute multiple patterns in a file: Substitute multiple patterns in place To substitute … Read more
You can check the version of PHP installed on a Linux or Unix server by using the following methods: From the command line: You can run the following command in your terminal or shell to display the version of PHP installed on the server: $ php -v PHP 7.3.22-1+ubuntu18.04.1+deb.sury.org+1 (cli) Copyright (c) 1997-2021 The PHP … Read more
The id command in Unix-like systems is used to display the user and group information for the current user or a specified user. It can display information such as the user ID (UID), group ID (GID), and the groups that the user belongs to. Here are some examples of how to use the id command: … Read more
The logname command in Unix-like systems is used to display the login name of the user running the command. Here’s how to use it: Open a terminal or shell window. Type the following command: $ logname Press Enter. The logname command will display the login name of the current user, for example: user Note that … Read more
The bg command in Unix-like systems is used to continue executing a job in the background, after it has been stopped. When a job is stopped, it is said to be in the “stopped” state, and it will not continue executing until it is either resumed in the foreground (using the fg command) or in … Read more
To install the MySQL database server on Debian Linux, you can follow these steps: Update the package list: sudo apt update Install the MySQL server package: sudo apt install mysql-server During the installation process, you will be prompted to set a root password for the MySQL server. Choose a strong password and remember it, as … Read more
To install the memcached high-performance distributed memory object cache server on RHEL/CentOS 6 Linux, you can follow these steps: Install the memcached package using the yum package manager: sudo yum install memcached Start the memcached service: sudo service memcached start Verify that the memcached service is running: sudo service memcached status This will display the … Read more