About DNS resolution DNS resolution is pivotal for seamless internet functionality for end-users. For instance, imagine the inconvenience of entering the IP Address directly instead of typing "google.com" into the…
Occasionally, when comparing dates (e.g., 2021-08-09) within a Bash script, unexpected errors may arise, such as 'value too great for base (error token is "08")' or 'value too great for…
Suppose we want to clone a GitHub repository using SSH authentication. In this case, we need to ensure that the corresponding private key is available on the server where we…
Symbolic links: -> A symbolic link (also known as a symlink) is a file that points to another file within the system.-> These links are analogous to shortcuts in Windows.->…
This post will guide you through extending the ext4 partition (/) with and without LVM using parted. While there are other methods for extending the root partition, such as fdisk…
NLB (Network Load Balancer) Network Load Balancers (NLBs) function at layers 3 and 4 of the OSI model, while ALBs (Application Load Balancers) operate at layer 7. When a request…
The 'getopts' command is a built-in tool in shell scripting. It helps in handling different types of input when working with scripts. It can process information in two ways: It…
madhu@madhu-Inspiron-5567:~$ sudo cd /root [sudo] password for madhu: sudo: cd: command not found If you encountered the mentioned error after running sudo with the "cd" command, it occurred because: The…
Imagine having millions of small files within a directory. When attempting to delete files in the directory that match a specific pattern using the "rm -rf" command, or to remove…
Script to change a common password of all the ESXIs in a vCenter: #need to enter the current root password at command line $rootpswd = read-host "Please enter the current…