Linux

1 Special Permissions Set_uid[[email protected] ~]# ls-l/usr/bin/passwd when s appears on the file owner's X permission description is set_uid-rwsr-xr-x. 1 root root 27832 June 2014/usr/bin/passwdset_uid is an ordinary user who temporarily owns the

Server Installation PipResources:1, first say what is PIPPip is "A tool for installing and managing Python packages.", which means Pip is a Python software Installation tool2, the following describes how to install PIP under LinuxDownload Pip to/usr/

1. Basic SceneThe basic scenario is that you want to log in directly from one server to another, or copy the server server's data without password authentication directly to the client server, the following is the server server S (the data file to

In Linux systems, firewalls (Firewall), url translation (NAT), packet records, traffic statistics, these functions are provided by the NetFilter subsystem, and iptables is the tool for controlling netfilter. Iptables organizes many complex rules

How to use the Useradd command in a detailed Linux commandOriginal: http://blog.csdn.net/u011537073/article/details/51987121Linux System is a multi-user multi-tasking time-sharing system, any user who wants to use system resources must first request

Overview of VirtualizationVirtualization Resource Management–x a physical resource--y logical resource– Degree of implementation: full, partial, hardware-assisted (CPU)To create a new virtual machine manually:Virtual machine Name: ExampleNetwork

Linux Basic network SettingsBasic information of network, setting up basic information of network; DHCP Automatic management network basic information1. View of the basic information of the network:Ip/netmask/gateway/dns/mac/hostname/hosts Network

1. ls commandLS: Lists the contents of the current directory or specifies the directory usage: LS [option] [files_or_dirs] Option:-A: List contains hidden files-L: Show additional Information-r: Directory recursion list -LD: Lists information about

Increase timing Detection Linux memory, timely cleanup functionOriginal: http://www.voidcn.com/article/p-wnmannom-boa.htmlFree-m view, found the memory ran full.Top, and then press Shift+m, that is, by the percentage of memory occupied, found in the

Common compression formatsWindows:.rar,. zip,. 7zLinux:. zip,. gz,. bz2,. XZ,. Tar,. GZ,. tar.bz2,. Tar.xzGzip Compression ToolUsed to compress files (common)Gzip 1.txt Compression 1.txtgzip-d 1.txt.gz decompression 1.txt.gz650) this.width=650; "Src=

First, &At the end of a command, you can put this command in the background to execute, asWatch-n sh test.sh & #每10s在后台执行一次test. Sh scriptTwo, CTRL + Z (the task is placed in the background and in a paused state)You can place a command that is being

Turn http://blog.itpub.net/23135684/viewspace-668924/Unix general use Method 3, for deploying OSWMethod One:Edit/etc/rc.d/rc.localJoin the command you want to execute.Such as:[email protected] rc.d]# cat rc.local#!/bin/sh## this script. 'll is

Linux under setuid Command!reproducedEvery ordinary user in a Linux system can change their own password, which is a reasonable setting.The problem is: the user's information is saved in the file/etc/passwd, the user's password is saved in the

1. Turn off the firewall or open the SSH login port (default 22) to the firewall.2, set the hostname temporary: hostname XX Permanent: Modify the corresponding hostname value in the/etc/sysconfig/network, and then restart the network card3, set the

In the 64-bit Linux installation of 64-bit Oracle, there are sometimes "Libxext.so.6:cannot open Shared Object file:" Errors. Or sometimes appears libxp.so.6 is needed by openmotif21-2.1.30-11.el ... Error.This is mainly due to the fact that Oracle

I believe we have heard these words more or less: Big data, artificial intelligence, Internet of things. This is the fire in recent years a few hot concepts, can be said to be the future development of science and technology direction. But behind

In the previous section we studied:Network card driver Introduction and production of virtual network card driver: http://www.cnblogs.com/lifexy/p/7763352.htmlNext , learn the NIC Chip dm9000c, how to write the porting dm9000c NIC driver. 1.

Search for files with spaces after processing file names in CentOSIn Linux, when there is a space in the file name, how can I find or confirm that there is a space in the file name? How can we replace and process these spaces in batches?Method 1:

Common commands for viewing system configurations in Linux I. linux CPU sizeCat/proc/cpuinfo | grep "model name" & cat/proc/cpuinfo | grep "physical id" Note: in Linux, you can view detailed information about each cpu in/proc/cpuinfo. However, for

Smokeping configuration, Reference: This article briefly introduces how to install and configure smokeping.I. Environment 1. OS Server: 10.11.4.250/CentOS-7-x86_64-15112. Smokeping version Smokeping-2.6.11: