Linux

DMA (Direct memory access) is an alternative method of communication to I/O ports that permits the device to transfer data …

I/O (Input/Output) ports (also referred to as I/O addresses) are unique locations in memory reserved for communications between the CPU and …

An interrupt request (IRQ) is a hardware signal sent to the processor instructing it to suspend its current activity and …

The /proc directory in on a Linux system contains information about system resources. It is a virtual filesystem that is created dynamically by Linux …

You can use the chattr command to change file attributes in Linux. You can secure your files by modifying their …

By default, when you create a file as a regular user, it’s given the permissions of rw-rw-r–. You can use the …