Introduction The error “No space left on device: Couldn’t create accept lock” in Apache usually indicates that system semaphore limits are exhausted. This can be resolved by clearing unused semaphores and increasing kernel limits. Prerequisites Implementation Step 1: Remove unused semaphoresfor semid in ipcs -s | grep apachec | cut… Continue Reading No space left on device: Couldn’t create accept lock

Introduction This script automatically rotates IP addresses for a cPanel account at regular intervals (e.g., every 5 or 10 minutes). It reads IPs from a file and updates the account IP sequentially. Prerequisites Implementation Script: #!/bin/bash #List of IP’s in file /root/mydomain/iplist.txt CHANGEIP=/usr/local/cpanel/bin/setsiteip #This is a cPanel user account USERNAME=mail23… Continue Reading IP changing script

Introduction Monitoring root access is critical for maintaining server security. By enabling root login alerts, you can receive instant email notifications whenever someone logs in as the root user. This helps in detecting unauthorized access and improves overall system auditing on your Linux server. Prerequisites Before proceeding, ensure the following:… Continue Reading How to Enable Root Login Alerts on a Linux Server

Introduction Mozilla Thunderbird is a free and open-source email client that allows you to manage multiple email accounts efficiently. This guide explains how to configure an email account on macOS using Thunderbird. Prerequisites Before starting, ensure you have: Implementation Follow the steps below to configure your email account: Step 1:… Continue Reading How to configure Mozilla Thunder bird in MAC OS for the email account?

Mail might tell you this, even when you’re using the correct password: “The server {server name} rejected the password for user {username}. Please re-enter your password, or cancel.”Products Affected This message may appear several times while trying a correct password. This can happen if the mail server is not available… Continue Reading Mac OS X Mail: “The server rejected the password” alert, even with correct password

Introduction Mozilla Thunderbird is a popular email client that allows you to manage your emails from your desktop. This guide explains how to configure a cPanel email account in Thunderbird using standard mail settings. Prerequisites Before starting, ensure: Implementation Step 1: Open Thunderbird Step 2: Add New Account Step 3:… Continue Reading How to set up Mozilla Thunderbird for the E-mail account created with cPanel

Instructions The code below is a simple HTML form which you can copy and paste in your website. Then you just need to adjust the values in red based on your requirements. Cart checkout will not work with your sandbox accounts. Instructions The code below is a simple HTML form… Continue Reading Shopping cart source codes

Introduction Logical Volume Manager (LVM) is widely used in Linux environments for flexible storage management. While creating and managing LVM is straightforward, real-world production issues require strong troubleshooting skills. In interviews and real-time environments, you are expected not only to know commands but also to diagnose problems quickly and fix… Continue Reading LVM, How can i add it.

Introduction Connecting to a NAS backup is simple and allows you to access your backup storage over the network using standard protocols like SAMBA/CIFS and FTP. The NAS can be accessed directly from your server or mounted as a local drive. Prerequisites Implementation Connect via FTP Mount NAS on UNIX… Continue Reading How do I connect to my NAS backup?

Introduction This script helps you receive an email alert whenever a user logs into your Linux server. It is useful for monitoring access, especially for root logins. Prerequisites Implementation Step 1: Log in to the server Step 2: Open .bash_profilevi .bash_profile Step 3: Add the below scriptecho ‘ALERT – Root… Continue Reading Shell script – Logged in mail