Redis is an open-source, in-memory key-value data store. You can install Redis on Ubuntu Linux by following these steps: Update the package lists and upgrade the system using the following command: sudo apt-get update sudo apt-get upgrade Install the Redis server package by running the following command: sudo apt-get install redis-server Once the installation is … Read more
n Bash, you can repeat a character ‘n’ times using the printf command. The syntax for repeating a character ‘n’ times is as follows: printf “%*s” n character Where: n is the number of times you want to repeat the character. character is the character you want to repeat. It can be enclosed in single … Read more
The Adaptive Replacement Cache (ARC) is a component of the ZFS file system that stores frequently accessed data in memory to improve performance. On FreeBSD, the ARC size can be set using the “kern.vm.zfs.arc_max” sysctl. You can check the current ARC size by running the following command: sysctl kern.vm.zfs.arc_max You can set the ARC size … Read more
Updating the firmware on a Samsung SSD drive on Linux can be done using the “samsung magician” software, which is a command line tool provided by Samsung to manage and maintain their SSD drives. To update the firmware on a Samsung SSD drive, you will need to follow these steps: Download the latest firmware for … Read more
The “df” command in Linux and Unix is used to display the amount of disk space used and available on the file system. The command can be used with various options to display the information in different formats. Some examples of how to use the “df” command are: To display information about all file systems … Read more
To upgrade a ZFS storage pool version on FreeBSD, you can use the “zpool upgrade” command. The command will upgrade the specified pool to the most recent version supported by the system. For example: zpool upgrade poolname It is recommended to backup your data before upgrading. And also you may need to take the pool … Read more
To install lftp on a FreeBSD system using the command line interface (CLI), you can use the pkg package manager. First, update the package index by running the following command: sudo pkg update To install lftp, you can use the install command. This command will download and install the package and its dependencies: sudo pkg … Read more
There are several ways to find and replace all IP addresses with a new one in a Linux system. One way is to use the sed command, which is a powerful text processing tool. First, you will need to find all of the IP addresses in the files you want to modify. You can use … Read more
There are several ways to find the number of RAM slots in a Linux system. One of the most common methods is to use the dmidecode command, which retrieves hardware information from the BIOS. Open a terminal window and run the following command: sudo dmidecode -t memory This will display information about the memory installed … Read more
In Ansible, the when statement is used to conditionally execute a task based on the outcome of a test. You can use multiple when statements in a task by using the and and or operators to join multiple tests. To use multiple when statements with the and operator, you can use the and keyword followed … Read more