If you’re getting an error like “cd: Permission denied” when trying to change directories in Bash, don’t worry, you’re not alone. This is a common issue that can be fixed fairly easily. In this blog post, we will discuss two ways to fix the cd: Permission denied error. Hopefully one of these methods will work …

The SSH option StrictHostKeyChecking is a security feature that affects how SSH verifies the identity of a remote computer when connecting to it. It determines whether strict host checking is enabled or disabled.  When this option is enabled, the client will automatically reject any key from the server that does not match the one stored …

If you’ve been getting the error message “ssh: Could not resolve hostname Name or service not known,” don’t worry, you’re not alone. The error message “ssh: Could not resolve hostname [name]: Name or service not known” indicates that the SSH client is unable to resolve the hostname of the remote server you are trying to …

What are the performance tools you would use on Linux Machine uptime dmesg | tail vmstat 1 mpstat -P ALL 1 pidstat 1 iostat -xz 1 free -m sar -n DEV 1 sar -n TCP,ETCP 1 top   Detailed Answer is available here How would you troubleshoot a High I/O Issue Troubleshoot high iowait issue …

Landing a job in the tech industry can be difficult. If you are looking to break into this field, you need to be prepared for the technical interview. This can be a daunting task, but don’t worry – we are here to help! In this blog post, we will discuss 4 proven strategies that will …

As a Linux administrator, I often find myself troubleshooting and resolving networking issues. One particular experience that sticks out in my mind was when I had to debug an issue with our DB server’s access. The symptoms of the problem indicated that our new application machine wasn’t able to connect to the DB server, but …

Recently, the network at my workplace went down for a few minutes. I was tasked with investigating the issue and found that one of the network cards had failed. Step by Step guide to Troubleshooting network issue I started by checking the status of the network interface: ifconfig eth0 The output showed that the interface was …

I was recently tasked with solving a tricky disk performance issue on a Linux server. At first, I thought it would be a straightforward task. After all, I had been working in IT for several years and had seen my fair share of disk performance issues. But as soon as I started looking into the …

Troubleshooting a problem related to Linux networking can be a challenging experience, but it doesn’t have to be. By understanding the basic principles of Linux networking and having an organized approach, you can quickly identify and resolve any issue that arises. In this article, we will dive into this issue using the following commands. Network …

The “ifconfig: command not found” error typically means that the ifconfig binary is not installed or the path of the binary file is not under the $PATH. So we can use the following 3 ways to fix this issue. install ifconfig command through net-tools  package run ifconfig command with full path add the directory path …