Linux

Linux file permissions except R, W, X and S, T, I, a permissionS: The file owner and group settings suid and GUID files are executed as root after the S permission has been set. When setting the S permission, the file belongs to the main, the group

| Pipe symbolmkdir Creating a DirectoryTouch to create a fileMkdir-p is a recursive parameter such as: mkdir home/1/2/3/4/ -P continuous creation of multi-level directory when you need to add PRmDir is to delete the empty directoryRM is a file that

In daily operations, for security reasons, it is often necessary to make white list restrictions on the IP server landing. The main ways to restrict server access to IP are:1) Restrictions on SSH ports in iptables2)/etc/hosts.allow

1, modify the Ulimitvi/etc/security/limits.confIncrease* Soft Nofile 65535* Hard Nofile 65535*-Nofile 65535 Modify Linux kernel file sysctl-p errorError: "Net.bridge.bridge-nf-call-ip6tables" is an unknown keyError:

Sometimes we have to send information such as SQL slow query to operations personnel or other related responsible person. The default mail sending method under Linux is often treated as junk mail by various mail servers.So we'd better do it

Linux package Management (2)Centos:yum, DNFurl:ftp://172.16.0.1/pub/Yum:yellow Dog, Yellowdog Update ModifierYum Repository:yum RepoStores a number of RPM packages, as well as the relevant metadata files for packages (placed in a specific directory:

Centos6.5 installation nginx-1.8.0, nginx-1.8.0 1. Nginx installation environment: Gcc: to install nginx, you must first compile the source code downloaded from the official website. The compilation depends on the gcc environment. If there is no

Three methods for adding environment variables to CentOS After installing MATLAB on the Linux CentOS system, you need to add the matlab command to the system command for ease of use. If you execute the "matlab" command before adding it to the

Configure a wireless network in LinuxGuideIwconfig is one of the User-layer configuration tools for Linux Wireless Extensions (LWE. LWE is a tool for wireless network configuration in Linux, including Kernel support, user-layer Configuration tool,

Centos Mac Modification Add a line in the file/etc/sysconfig/network-scripts/ifcfg-eth0 similar to the following MACADDR = 00: 04: AC: 33: 1C: 3B A: The MAC address is the physical address of the NIC. You can change the MAC address in Linux:1) Close

CentOS configuration user program boot self-start I. Background: * platform: centos6.5 * objective: to configure the user program to start automatically Ii. steps: 1. Compile the boot script Cd/etc/rc. d/init. d # init. d directory

How to fix USB flash drives in LinuxGuideU disk must have been indispensable in everyone's daily life and work. It makes it easier for us to maintain and transfer documents. However, with frequent use, file system errors, Bad blocks, and bad sectors

Linux Kernel 4.7.2 is released!GuideGreg Kroah-Harman, a Linux Kernel developer and key Maintainer of Multiple Kernel branches, today announced the second maintenance version of the Linux Kernel 4.7 series. This well-known open-source project is

11 highlights of Windows 10 CreatorsGuideMicrosoft recently announced a large number of features related to Windows 10 update next year, but the company quietly hides more than 11 new features in its Creators update version. In fact, this update

Kaspersky released the operating system Kaspersky OSGuideKaspersky, a well-known network security and antivirus software company, launched a new security operating system: Kaspersky OS. Kaspersky CEO Eugene Kaspersky showed a black box at the

Ubuntu provides new patches to update the kernel without restarting.GuideYou may remember that the Linux 4.0 kernel released a year and a half ago brought about a new feature that allows you to update or patch the kernel without restarting it. This

Microsoft released the latest Cognitive Toolkit 2.0 beta deep learning Toolkit!GuideMicrosoft released its open-source deep learning Toolkit 2.0 beta version today. Previously, this software was called Computational Network Toolkit (CNTK). In this

Microsoft joined the Linux Foundation as a "platinum member" In recent years, Microsoft has been strengthening its relationship with the Linux community. In the past few months, the company also sent ChakraCore and Skype to the Linux platform.

Let's Encrypt promotes the popularization of HTTPSGuideToday's Internet is surging, with countless traps. HTTPS can help you resist some traps. However, the HTTPS ecosystem is heavily dependent on CA, and CA has many criticized problems: Expensive

ORWL: a powerful micro-open source computerGuideIn today's information age, Lightbot security is the most important thing. I'm afraid no one will want their important data to fall into the bad guys. However, even hardware without security protection