Linux

Vulnerability Description: ImageMagick is an extensive and popular image processing software. Recently, the software has been a burst of remote code execution vulnerabilities, numbered cve-2016–3714. This vulnerability allows an attacker

The operating system in our virtual machine is a CentOS without a graphical interface. In the absence of a network configuration, it is now necessary to copy the files to the Linux system on the virtual machine, I use the U-disk mount on the way to

Recently VPS Nginx don't know why, will turn off for no reason. It may be that the hen was killed by the high load. But to keep the site online, you've written a daemon: The code is as follows Copy Code Aa= ' Pgrep-f

Ntpdate Synchronization Time failure problem, put on hold for a long time, today is solved, not yet the problem is not clear.ntp.fudan.edu.cn time server has been used before, I do not know when the start can not be used.This time, the decision to

The root cause of the problem is the use of. * When matching files and directories under Linux, the parent directory acts as. will be matched to. And even then, that doesn't cause problems, does it? But this is not the case, because. * Does not

Author: He Zhiqiang [hhzqq@21cn.com]Date: 2000-08-10Version: 1.0I. Software downloadJDK

The top command is a common performance analysis tool in Linux. It can display the resource usage of various processes in the system in real time. It is provided by default in the linux operating system.Directly press the top key in the command line

Run the quotaon command to enable the per-second and per-year space limit for users and groups. The file system root directories of each partition must have the quota. user and quota. group configuration files.SyntaxQuotaon [-aguv] [file

Mdeltree deletes all files and directories under the specified directory and directory. If the specified file or directory does not exist, an error message is returned.SyntaxMdeltree [-v] msdosdirectory [msdosdirectories...]Parameter description:

By default, edquota uses vi to edit the disk quota settings of users or groups.SyntaxEdquota [-p ] [-ug] [user or group name...]OrEdquota [-ug]-tParameters: -U sets the user's disk quota, which is a preset parameter. -G: Set the disk quota of

Execute this command to check the number of FTP logon users and the maximum number of FTP logon users.SyntaxFtpcountParameter description: -F : specifies the path of the set file. -H, -- help: displays help information.InstanceFtpcount can

The let command is a tool used in BASH for computing. It is used to execute one or more expressions. You do not need to add $ to variable calculation. If the expression contains spaces or other special characters, it must be caused.Syntax formatLet

Continuous updates. If you have any questions, leave a message and try to collect more common and simple commands.Enter a folder commandCd/home/wwwroot/111cn.net/Exit the folder and return to the root directory.Cd/Return to parent directoryCd

The Linux loadkeys command can be used to modify the keyboard input process of the linux keyboard driver based on a keyboard definition table. For more information, see dumpkeys.SyntaxLoadkeys [-d -- default] [-h -- help] [-q -- quiet] [-v --

The Linux cut command is used to display the text from num1 to num2 in each line starting from the beginning.SyntaxCut [-bn] [file]Cut [-c] [file]Cut [-df] [file]Instructions for use:The cut command cut bytes, characters, and fields from each line

Slocate itself has a database that stores information about files and directories in the system.SyntaxSlocate [-u] [-- help] [-- version] [-d ] [searched file]Parameters:-D or -- database = specifies the directory where the database is located.-U

The Linux mdel command is used to delete files in MSDOS format.A prompt will be generated before the read-only deletion.SyntaxMdel [-v] msdosfile [msdosfiles...]Parameters: -V displays more messages.InstanceDelete autoexec. bat from the root

You can use chattr to modify the attributes of a file or directory and run the lsattr command to query its attributes.SyntaxLsattr [-adlRvV] [file or directory...]Parameters: -A displays all files and directories, including the additional

Less is similar to more, but less can be used to browse files at will, while more can only move forward, but cannot move backward, and less will not load the entire file before viewing.SyntaxLess [parameter] fileParameter description:-B set the