If you’re encountering the “Your account has expired” message in Linux, it typically means that the account’s expiration date has passed, preventing access. You’ll need superuser privileges to resolve this issue. Solution for “Your account has expired” in Linux Here’s a general method to address this problem: To ensure accuracy before making changes, it’s prudent …
Linux
To ensure a user’s password never expires in Linux, leverage the chage command—a tool specifically designed for altering user password expiration settings. As a root user, execute the following command: chage -I -1 -m 0 -M 99999 -E -1 <username> Replace <username> in the command with the actual username. Breaking down this command: chage: Command …
The SSL: SSLV3_ALERT_CERTIFICATE_EXPIRED error suggests that the SSL certificate used by the server you’re trying to connect to has expired. The best and most secure solution is to update the expired certificate with a new, valid one. This usually involves generating a new certificate and configuring the server to use it. If you don’t control …
A subnet, or subnetwork, is a logical subdivision of an IP network. It’s essentially a smaller network within a larger network, created by dividing the network address space into smaller segments. This division is achieved through a process called subnetting. By dividing the network into smaller segments, subnet allows for more efficient management of network …
“Practical Linux System Administration” by Kenneth emerges as a remarkably comprehensive guide for anyone aspiring to master the intricacies of Linux administration. This book is a treasure trove of practical knowledge, seamlessly blending fundamental concepts with advanced techniques. From the outset, Kenneth’s expertise shines through. He meticulously introduces the Linux operating system, making it approachable …
The noexec option in /etc/fstab (File System Table) in Linux is a mount option that specifies how a filesystem should be mounted, particularly with regard to the execution of binaries. When a partition is mounted with the noexec option, it means that you cannot execute any binaries that are stored on that partition. Understanding /etc/fstab …
To fix the “no matching host key type found” error in SSH, you need to modify your SSH client configuration to accept the host key types offered by the SSH server. This error typically occurs when your SSH client does not support or is not configured to accept the host key types provided by the …
In the world of Linux and Unix-like operating systems, the “Permission Denied” error is a common occurrence that stumps many users, particularly when encountered in situations where file permissions seem to be correctly set. One less obvious but significant cause of this error is the `noexec` mount option. Understanding how this option works is key …
Ever encountered the cryptic message “Remote Host Key Has Changed” while connecting to a server using SSH (Secure Shell)? This seemingly technical error notification actually serves as a vital security safeguard. Each server in the SSH world has a one-of-a-kind identifier called a host key, similar to a digital fingerprint. When you connect for the …
In Linux, getting the SSH host key fingerprint is crucial for verifying the identity of an SSH server before establishing a connection. Here are the methods to retrieve the host fingerprint: Method 1: Using ssh-keygen Local Server: To find the fingerprint of a local SSH server’s host key, use: ssh-keygen -lf /etc/ssh/ssh_host_rsa_key.pub The -l option …