The “barrier-based sync failed” error message in JBD (Journaling Block Device) can occur when the file system encounters an issue with writing data to disk. Barriers are used to ensure that data is written to disk in the correct order and to prevent data loss in the event of a system crash. When a barrier-based … Read more

To mount and access an NTFS partition on a Red Hat Enterprise Linux (RHEL) or CentOS system, you will need to install the NTFS-3G driver, which provides support for NTFS file systems. Here’s how you can do it: Install the required packages: sudo yum install ntfs-3g Create a mount point directory, where the NTFS partition … Read more

The “No such file or directory” error when mounting an NFS4 file system typically indicates that the client is unable to access the NFS server or the shared directory on the server. This error can be caused by several factors, including: Incorrect server address: The client may be using an incorrect IP address or hostname … Read more

Here’s how you can set up an NFSv4 file server on a Debian-based Linux system (such as Debian or Ubuntu): Install the necessary packages: sudo apt-get update sudo apt-get install nfs-kernel-server Create a directory that will be shared over NFS. This directory will be the root of the NFS file system. For example: sudo mkdir … Read more

You can use the tty command to find out what terminal you are currently using in a Linux or Unix-like system. The tty command returns the name of the terminal that is connected to the standard input (stdin), standard output (stdout), and standard error (stderr) of the current process. Here’s how you can use the … Read more

You can use the find command in a bash shell to search for matching files, including files that start with a dot (.), which are considered hidden files in Unix-like systems. To find all dot files (files starting with a dot) in the current directory, you can use the following command: find . -name “.*” … Read more

In Linux, you can move a folder from one location to another using the mv command. The basic syntax for moving a folder using the mv command is: mv source_folder destination For example, if you have a folder named myfolder in your current directory and you want to move it to the /tmp directory, you … Read more

The error message “Agent admitted failure to sign using the key” occurs when you try to use an SSH key that has been added to your SSH agent, but the agent cannot use the key to sign the connection. This can happen for several reasons, including: The key is passphrase protected: If the key has … Read more

To change the hostname (computer name) on a Debian Linux system permanently, you can follow these steps: Open the /etc/hostname file: sudo nano /etc/hostname Replace the existing hostname with your desired hostname. For example: mynewhostname Save and close the file. Open the /etc/hosts file: sudo nano /etc/hosts Find the line that contains your current hostname … Read more

In Korn shell (KSH), you can import variables and functions from a file using the . (dot) command. The . command reads the contents of a file and executes it as if it were part of the current shell. Here’s an example of how you can use the . command to import variables and functions … Read more