Linux

Using the Magic SysRq key for Linux security restart Magic SysRq is a key combination in the Linux kernel. It allows users to execute some low-level commands regardless of the system status. It is often used to recover from the frozen state of the

In the access log file access_log of the httpd service, a large amount of client access information is recorded. By analyzing this information, you can know the access to the WEB site in a timely manner. For experienced administrators, you can write

In CentOS linux, the iptables firewall is the iptables component under the linux server. When some software is installed, the iptables firewall will block some necessary connections, when an overseas server, such as a Dutch server, is in the initial

Linux File Permissions related issues I feel that the linux foundation is not solid, so I want to read "laruence's Linux private house dish" (do not despise me ...) Read the file permission chapter, chmod, and found a problem:As you can see, chmod +

You can modify/etc/fstab to automatically mount Windows partitions under Fedora. Add the following code: # fs_spec fs_file fs_type fs_options fs_dump fs_pass/dev/sda2/mnt/d ntfs umask = 0000, rw, exec, auto, user, sync 0 0 1, fs_spec: the device or

Add an FTP user in Linux and set the permissions to add an ftp user in linux, and set the corresponding permissions as follows:1. Environment: ftp is vsftp. The Restricted User Name is test. The restricted path is/home/test2. Create a user: Under

Common vi command collection 1. INSERT command a after the cursor append text A at the end of the cursor line I insert text before the cursor I insert text at the beginning of the line o Insert new lines under the cursor O Insert a new line on the

In UNIX, the multi-process zombie process in the process learning pipeline and Message Queue linux has been terminated, but has not been cleared from the Progress table. If the child process is terminated before the parent process, and the parent

Apache HTTP Server (III)-configure the basic container of the clip it is applied only when the command line parameters have corresponding definitions. For example, Redirect/http://otherserver.example.com/ is applied only when started with The

CentOS installation and configuration of minicom (serial port to USB) 1. install minicom and the file transfer tool sudo yum install minicom lrzsz2. Check whether your computer supports usb-to-serial communication before using the serial port. If

For ubuntu Chinese folders, you must first create several corresponding English folders, such as Desktop, Documents, Music, Pictures, Videos ...... Then edit the configuration file: gedit ~ /. Config/user-dirs.dirs points the folder to change, for

Centos_5 Chinese Language Pack Installation 1: Chinese Language Pack:Centos 5 was installed on a machine, but I didn't expect it to use Chinese at the beginning. So I chose the English package for the system language during installation. who knows

[Linux] su: cannot set user id: Resource temporarily unavailable solve today ssh mysql db test server, switch into Mysql account to report the following error: Login mysql error: [xxx @ xxx-c003db2 ~] $ Mysql-uroot-ERROR 1135 (HY000): Can't create a

Click "Next" and the system restarts. The "start" menu appears for the first time after startup, as shown in Figure 22. The first option is to enable the GUI normally, the second option is to enter the safe mode, the third option is to enter the

Ps: View processes in the system. In Linux, you can use ps-aux to view all processes. The w parameter indicates the command line for widening display. The w parameter can be written multiple times. Generally, it can be written three times at most,

Linux User-related commands Passwd command For the sake of system security, in Linux, each user has a user name and password. Therefore, when you use the useradd command to add a new user, you also need to use the passwd command to set a password

Directory: 1. programs and processes; 1.1 process classification; 1.2 process attributes; 1.3 Parent and Child processes; 2. Process Management;2.1 ps process monitoring tool;2.1.1 ps parameter description;2.1.2 ps application example;2.2

Currently, the most installed systems on servers are Windows, Linux, and FreeBSD. In terms of security:Windows is a familiar and easy-to-install and configure system, but its security is relatively poor. Once attacked, the entire operating system

Backup is an important task, but many people do not. Once data is lost due to improper use, backup becomes a real life-saving person. This article will discuss how to set backup policies and how to select backup media, and introduce tar and cpio

First, you have a top-level domain name with wildcard domain name resolution, such as: domain.com Next, enable mod_rewrite in httpd. conf. Add the following content at the end of httpd. conf: RewriteEngine on RewriteMap lowercase int: