UNIX & Linux University Tutorial (iv): UNIX file system, process, and job control

Chapter 23rd UNIX File System

Named pipe Mkfifo:mkfifo [-M mode] pipe. Named pipes must be created explicitly and will not disappear (the RM command can be removed).

The proc file is a pseudo-file used to access kernel information. For example, if a process ID is 1952, the process-related information can be found in a file in the/proc/1952 directory.

The VFS (virtual file system) implements the details of file processing.

24th Directory Operations

~ Represents the home directory; CD-you can switch to the last access directory.

UNIX & Linux University Tutorial (iv): UNIX file system, process, and job control