Linux systems rely on a multitude of services to perform a wide range of tasks, from networking and security to system monitoring and application support. In this comprehensive guide, we will delve into the heart of Linux service management, demystifying the process of checking whether a service is enabled on your Linux system. Understanding systemd …
Linux
The systemctl command is a powerful tool in Linux systems that serves as the interface to control and manage the systemd init system. It is a central component responsible for initializing, managing, and maintaining various system processes and services during the boot process and while the system is running. With systemctl, users can start, stop, …
The “too many logins for user” error occurs when a user attempts to log in to a Linux system but is denied access due to reaching the maximum allowed number of concurrent (simultaneous) login sessions. Here’s an example scenario: Let’s say we have a user named “alice” on a Linux system, and the system administrator …
The “wget failed: Connection timed out” error occurs when wget is unable to establish a connection to the server within the specified timeout period. This can happen due to various reasons, such as network issues, firewall settings, or problems on the server-side. Here are some steps you can take to troubleshoot and fix this issue: …
The error message “wget: command not found” is a common response you may encounter when attempting to run the wget command in your terminal or command prompt. This error occurs when the system cannot find the wget command because it is not installed or not available in the system’s PATH.. Here’s what the error message …
The “unable to resolve host address” error in wget occurs when the tool is unable to resolve the domain name of the host you’re trying to access. This could be due to various reasons, such as DNS server issues, network connectivity problems, or incorrect URLs. 10 ways to fix unable to resolve host address in …
The error “Unable to locally verify the issuer’s authority” means wget cannot verify the SSL certificate of the website you’re trying to connect to. This usually happens when wget doesn’t have access to the necessary CA certificates to verify the website’s certificate. Here are a few possible ways to resolve the issue: Install/Update the CA …
Network command in Linux Command Description ifconfig Display network interface configuration. ip addr Show IP addresses and network interfaces. ip route Display the routing table. ping Test network connectivity to a host. traceroute Trace the route packets take to a host. netstat Show network statistics and connections. ss Similar to netstat, show socket statistics. nslookup …
In the realm of IT automation, Ansible has emerged as a powerful tool for streamlining various administrative tasks. Among these tasks, user management stands out as a common and often repetitive process. Ansible provides two primary approaches for creating users: ad-hoc commands and playbooks. This article aims to shed light on both ad-hoc commands and …
The error message “curl: (60) SSL certificate problem: unable to get local issuer certificate” typically indicates a problem with the certificate of the server you’re trying to connect to or the certificate chain leading up to a trusted certificate authority. To establish a secure connection, curl tries to verify the server’s certificate against a list …