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What this article shares with you is about what the system security device file in Autoconf is. The editor thinks it is very practical, so I share it with you to learn. I hope you can get something after reading this article. Let's take a look at it with the editor.

Discuss security issues from the point of view of system administrators. The system administrator is the person who manages the system: start the system, stop the system running, install new software, add new users, delete old users, and complete the daily tasks of keeping the system developing and running.

Autoconf tutorial about device Fil

Autoconf tutorials about the communication between the UNIX system and various devices on the system are realized through special files. As far as the program is concerned, the disk is a file, the MODEM is a file, and even memory is a file. All devices connected to the system have a file corresponding to it in the / dev directory. When performing the Ithumb O operation on these files, the UNIX system converts it into the actual device action. For example, the file / dev/mem is the memory of the system. If the file cat, it actually displays the memory of the system on the terminal. For security reasons, this file is not readable to ordinary users. Because at any given time, the memory area may contain the user login password or the password to run the program, the edit buffer of some part of the file, the buffer may contain the command with ed-x

The decrypted text and all kinds of information that the user does not want others to access.

Files in / dev are often called device files, and you can look at some of the devices in the system with the ls / dev command:

Acuo call automatic dialer

Console system console

Operating disk partitions in dsknn block mode

Kmem core memory

Mem memory

Lp printer

Mto block operation of magnetic tape

Disk partitions operated by rdsknn streams

Tape operated by rmto stream

Swap exchange area

Syscon system terminal

Ttynn terminal port

X25 network port

The above is what the system security device files in Autoconf are, and the editor believes that there are some knowledge points that we may see or use in our daily work. I hope you can learn more from this article. For more details, please follow the industry information channel.

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