Everything in Unix is either a file or a process.
Process
When you run a program, a process is created. Every process is identified by a number called process ID. To check the processes you are running, execute "ps" command on the shell. You can think of the process ID to be a sequence number given by the operating system. It may be different at different execution of the same program.
File
A file is a sequence of data. A file could be created by users using word processors or text editors or by the program to keep the information. A program is kept in the form of a file and when it is run by the kernel, it loads as a process.
A file is generally written on the disk so that it exists even after the computer restarts. It is saved in a disk - either hard disk drive (HDD - cheaper and slower) or solid state drive (SSD - faster but costlier).
A file is identified by a name called file path. In Unix, everything is represented as file:
Devices such as Mouse, Keyboard
Programs are saved as file
Disk and Monitor
Taking you to the next exercise in seconds...
Want to create exercises like this yourself? Click here.
No hints are availble for this assesment
Answer is not availble for this assesment
Loading comments...