One of the Linux summary applications

(i) hierarchical structure of the file system:

In Linux, there are two kinds of files, one kind of ordinary file, the other is special file, ordinary files usually exist in various directories, and special

Directories are generally stored in/dev.

(ii) List of roles for the main catalogue:

/bin binary Executable command

/dev Device Special files

/etc system administration and configuration files

The base point of the/home user start directory

/lib Standard Programming Library

/sbin System Administration Commands

/tmp Common temporary file storage point

/usr/x11 x-windows System files

/USR/ADM system Management, data files

/usr/bin Other executable commands

/usr/lib configuration files for libraries and packages

/usr/local/bin Local Add-on command

/usr/local/lib local additions to the library

/USR/LOCAL/SRC source files for local commands

/usr/man System United Operator album

/usr/src/linux Linux kernel source program files

/var default overflow area for large files

(iii) How to find the appropriate files on the disk:

There is a file in the disk partition, regardless of what type of file it is, assign it a number, called its index node number

, it is actually the index number of the entry that exists on the disk of an array. Each element of an array is an index node that holds the

Management information for a file.

(iv) How to establish a connection between the pathname of a different file system:

Use In-s to create symbolic connections between the two

(v): Process: View the process's command PS

Each process in the system identifies a process ID number by using a unique integer value called the process identifier number.

The common ancestor of all other processes in the system is the INIT process.

You can use the TTY command to view the virtual terminal

You can kill a process with kill.

(vi): Check DF command for commonly used disk space and memory space

The du command can see how much space is used for a particular partition, and how much space is used for its subdirectories.

free to view the memory area information.

one: Linux can accommodate more processes than memory, because it leaves a memory overflow on disk

area, commonly called swap space.

Second: Speed up disk access, Linux has made such arrangements, once the disk file read into a piece of data

It puts it in the buffer of memory and keeps it in memory for as long as possible, so that when it is used again

Data, it can be read from a buffer in memory. Instead of having to read the disk.

One of the Linux summary applications