How to Force fsck on Reboot
Fsck command is used to check filesystem consistency in Linux and Unix-like operating systems. On the system, fsck runs either automatically or manually. The filesystem shouldn’t be mounted while running …
How to Find the IP Address in Linux
An IP address is a unique address that identifies a device on the internet or a local private network. Every computer in the network requires its own unique IP address to get …
Convert to Uppercase or Lowercase on Linux
There are many ways to convert a string to uppercase or lowercase in Linux. Most commonly used commands to change case are tr, sed and awk. Tr is the simplest …
How to List Disks in Linux
Linux system administrators generally list disks to check the whole disk space and its usage. Listing disks also helps see the attached disks to the system, partitions and filesystem the …
How to Check Disk Queue Length in Linux
The average disk queue length is the average number of read and write operations that were queued during a selected interval for the chosen device. It’s important to watch them …
How to Check TLS/SSL Expiration Date Using OpenSSL
TLS/SSL certificates are used for encrypting websites or web applications. They provide much-needed privacy and confidentiality to users who are interacting with the webserver via a browser or on command-line. …
How to Change UUID in Linux
It essentials to use UUID to mount storage device if the system uses many disks which are very regularly switched or moved. UUID is integrated with the filesystem and it …
How to List USB Devices in Linux
Nowadays, many computer peripherals such as webcams, mice, scanners, printers, hard drives, USB (Pendrive) now come as USB devices. Once these devices are connected to the Desktop or server it’s …
How to Generate UUID in Linux
UUID (Universally Unique identifier) is a 128-bit unique number standardized by the Open Software Foundation. This number is universally unique and really impossible for a user to guess. This tutorial shows …
Duf – Check Disk Usage on Linux
Written purely in Go programming language, duf ( Disk Usage Free utility) tool is a free and opensource command-line tool that is an alternative to the df command. It intuitively …