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This article will explain in detail which Linux commands are reminiscent of demons and ghosts. The editor thinks it is very practical, so I share it with you for reference. I hope you can get something after reading this article.

Crypt

Well, we've always had crypt. As the name implies, crypt is not a crypt or grave where junk files are stored, but a command to encrypt the contents of a file. Today, "crypt" is usually implemented as a script: it works by calling a binary program called mcrypt to simulate older crypt commands. Using the mycrypt command directly is a better option.

Note that the mcrypt command creates a second file with the extension ".nc". It does not overwrite the file you are encrypting.

The mcrypt command has options for key size and encryption algorithms. You can also specify the key as an option, but the mcrypt command discourages it.

Kill

And the kill command-- not murder, of course, but the commands we use to terminate the process, depending on what is needed to terminate them properly. Of course, Linux doesn't stop there. Instead, it has a variety of kill commands to use on your command line. We have kill, pkill, killall, killpg, rfkill, skill (see es-kill), tgkill, tkill and xkill.

Shred

The Linux system also supports a command called shred. The shred command overwrites files to hide previous contents and ensures that they cannot be recovered using the hard disk recovery tool. Remember: the rm command basically removes file references from directory files, but does not necessarily erase or overwrite content from disk. The shred command is the content of the overwritten file.

Zombies

Although zombies (zombie process) is not a command, it is deeply ingrained on Linux systems. Zombies is basically the wreckage of a death process that has not been completely removed.

Processes should not run in this way-- allowing dead processes to linger, rather than just letting them die and enter digital paradise, so the existence of zombies indicates that there is some flaw in the process that left them.

An easy way to check to see if any zombie processes remain on your system is to look at the title line of the top command.

How scary! It shows three zombie processes.

At midnight

The souls of the dead wander from sunset until late at night. Linux allows users to track whether they have left or not with the "at midnight" command. At is used to schedule tasks that will be run at the next specified time, similar to one-time scheduled tasks (cron).

Daemons

Linux systems are also highly dependent on daemons (daemon), which run in the background and provide many of the system's functions. The names of many daemons end with "d" This "d" stands for "daemon" and indicates that the process is running all the time and supports some important function. Other daemons spell the word "daemon".

This is the end of the article on "which Linux commands remind people of demons and ghosts". I hope the above content can be helpful to you, so that you can learn more knowledge. if you think the article is good, please share it for more people to see.

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