Linux

Although Linux is more secure than Windows, some simple security configurations are necessary. There are a lot of tools on the Internet to scan your admin password with a dictionary, we can create some trouble and increase the possibility of being

uniq [Options] File Description: This command reads the input file and compares the adjacent rows. Under normal circumstances, the second and more repeated rows will be deleted, and the row comparison is based on the sort sequence of the character

GNU GRUB (Grand Unified bootloader "Grub") is a multiple operating system startup program from the GNU Project. Grub is an implementation of the multiple-boot specification, which allows users to have multiple operating systems in the computer at

Let's review the basic usage of the passwd command: The Linux passwd command is used to change the user's password Grammar passwd [-K] [-l] [-u [-f]] [-d] [s] [username] Necessary parameters: -D Delete Password -F Enforcement -K updates can

One, help Command Apply to internal commands Example: The code is as follows: # Type cd CD is a shell builtin # Help CD # type LS LS is aliased to ' LS--color=auto ' # Help LS -bash:help:no Help topics match ' ls '. Try ' help help ' or '

In UNIX system maintenance, system engineers sometimes want to be able to record the process of a session. When testing a system function, the engineer would like to record the steps of the test. To use this data for follow-up analysis in the case

When using a USB disk under Linux, every time you see a file like auto, it is suspected to be a virus. But the input ls-l command found that the attribute is not completely? The result is that it won't be erased. After a multi-party query that

first, the production of RPM package The process of making a rp-pppoe-3.10 column. 1. Download rp-pppoe-3.10.tar.gz [Root@localhost home]# pwd /home [Root@localhost home]# 2. Decompression # tar ZXVF rp-pppoe-3.10.tar.gz 3. #

How can I quickly navigate to concurrent high because of the large disk IO overhead? There are three ways to: 　The first: Using CPU information in the top command to observe The CPU information that top can see is: The code is as follows: tasks:2

This article mainly introduces the Linux command to view the system average load method, for the server administrator is very useful, the need for friends can refer to the 　　1, the concept of the average load of Linux systems Sometimes we feel

If your computer is a Linux system, so for the installation of Linux VNC service is very convenient, for VNC is a very good remote control tool, so the installation and configuration of Linux VNC service, for netizens useful to this function is very

If you make a general backup, on a daily basis (at least for the most frequent user profiles), you will help reduce the loss of the file and increase the level of resilience. The safest backup method is to record them in different media, such as

General article: First, look at the process with PS by using the following methods: The code is as follows: $ ps-ef ...... Smx 1822 1 0 11:38? 00:00:49 gnome-terminal Smx 1823 1822 0 11:38? 00:00:00 Gnome-pty-helper Smx 1824 1822 0 11:38 pts/0

General Process: 1. Add header file Dirent.h Declares the structure body pointer struct dirent * PTR; Declares a dir pointer dir * FD; 　　2. Analysis command line 3. Open catalog File Using the Opendir () parameter to parse the second parameter

For DBAs, it's often the case for the upgrade database or apply patch, and sometimes a lot of scripts need to be run. For these operations we want the files that are now being printed on the screen to be exported at the same time as the steps or

Types of attacks that Linux network systems may receive "Denial of service" attack The so-called "denial of service" attack means that hackers take destructive methods to block the resources of the target network, temporarily or permanently

Function Description: Sort the contents of the text file. Syntax: Sort [-bcdfimmnr][-o][-t][+-][--help][--verison][file] Supplemental Note: Sort can be sorted against the contents of a text file in units of behavior. Parameters -B ignores the

Want to test the cache server to run 2G of traffic to see. Try to let your IP scheduler to the server on the original basis, add 20% weights, so the request will be more on the original base of more than 20% of the amount. Originally the whole

A very simple command, pgrep, can quickly locate the PID of a process that contains a keyword; using this command, no longer use PS aux to go to which process PID Usage: Pgrep-l XXX Description -l parameter, which can display PID and process

What is SSH? The English full name of SSH is secure SHell. By using SSH, you can encrypt all transmitted data so that the man-in-the-middle attack is not possible and can prevent DNS and IP spoofing. An additional benefit is that the data being