Shulou(Shulou.com)06/01 Report--

This article mainly introduces what are the scary commands that haunt the linux terminal, which have a certain reference value, interested friends can refer to, I hope you can learn a lot after reading this article, the following let the editor take you to understand.

Demigod (daemon)

Without the various daemons lurking in the system, daemon, then Unix is no different. Daemons are processes that run in the background and provide useful services to users and the operating system itself, such as SSH, FTP, HTTP, and so on.

Zombie (zombie process)

The zombie process that appears from time to time is a process that is killed but refuses to leave. When it appears, there is no doubt that you can only choose the tools you have to drive it away. A zombie process usually indicates that there is something wrong with the process that produced it.

Kill (kill)

Not only can you use kill to kill a zombie process, you can also use it to kill any process that has a negative impact on your system. Is there a process that uses too many RAM or CPU cycles? Kill it with the kill command.

Cat (cat)

Cat is not related to cats, but it has to do with file manipulation: cat is an acronym for "concatenate". You can even use this convenient command to view the contents of the file.

Tail (tail)

The tail command is useful when you want to view the * * n lines in the file. When you want to monitor a file, it's also great.

Wizards (which)

Oh, no, it's not a kind of witch. Instead, the command prints the location of the file where the command passed to it is located. For example, which python will print the location of each version of Python on your system.

Basement (crypt)

The crypt command, formerly known as mcrypt, is handy when you want to encrypt the contents of a file so that no one can read it but you. Like most Unix commands, you can use crypt alone or call it in system scripts.

Shredded (shred)

The shred command is handy when you not only delete a file but also want to make sure that no one can restore it. It is not enough to delete files using the rm command. You also need to overwrite the space previously occupied by the file. This is the opportunity for shred to use his talents.

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