viewing logs and system information in Linux systems

CatTail-fLog file description/var/log/message system startup information and error log, which is one of the most commonly used logs in red Hat Linux/var/log/secure Security-related log information/var/log/maillog message-related log

Linux host NFS File share service configuration

Network file system sharing is a simple File sharing service in Linux system, it is characterized by simple configuration, easy to use, the disadvantage is that there is no security authentication mechanism, the security is relatively low.A small

The fork function under Linux

之前只是了解到linux中的fork函数是用来创建进程,并没有太多的去学习,这里学习记录如下。Writing is not easy, reprint need to indicate the source: http://blog.csdn.net/jscese/article/details/44401389 This article from the "Jscese" blog!Defined:Explanation from the Encyclopedia: thefork

Linux File Operations Command

Directory Operations CommandCommand Format command [-option][-parameter]Ls-la/etcCan be combined when there are multiple optionsls command:-A (all) displays all files, including hidden files, that are used. Files that begin with.Why hide (This is a

Linux display row display column totals

Linux display row display column totals[Email protected]:~$ free-t Total used free shared buffers cachedmem: 3103064 1608344 1494720 7872 67432 652132-/+ buffers/cache: 888780 2214284Swap:

"Device eth0 does not seem to be present, delaying initialization" caused by a Linux clone virtual machine

Virtual machine vmware Cloning a red Hat Enterprise Linx startup found that the network card could not find the NIC, as shown below, if you start the Web Service in the command window will encounter "Device Eth0 does not seem to be present, Delayin

FTP linux-500 oops problem Solving-jooyong-chinaunix Blog

FTP linux-500 oops problem Solving-jooyong-chinaunix Blog Just solved 530 of the problem, and came to a linux-500 oops:cannot change directory:/root, what is the reason, the Internet to check a bit, the main reason is that the system enabled

Use of the SED command for Linux

Linux system maintenance process, often through automatic script to deal with operations, and as the most commonly used language is the shell to complete the script. When it comes to substitution we often use SED to do the replacement work.Here is a

How to view Linux versions

How to view Linux versionsOne. Three commands to view the Linux kernel version number:1. Cat/proc/version results are as follows:[Email protected] ~]# cat/proc/versionLinux version 3.10.0-123.el7.x86_64 ([email protected]) (GCC version 4.8.2 20140120

Universal bidirectional circular linked list in Linux kernel

The development of contact with Linux more and more, rest and relax, inevitably look over the mysterious Linux kernel. See the two-way linked list, I think it is very interesting, this article noted.As a member of many basic data structures, the

VirtualBox install Linux system below how to share directory

Background:The system is Win+virtualbox the LinuxMint system is installed in the virtual machine.How do I share a directory?The first step:Installing enhancements in virtual machines2, set the shared directory in VirtualBox3, create a shared

Use Emacs+cscope to read kernel source code in Linux

1. The prerequisite is that Emacs is already installed2. Installing Cscopesudo Install Cscope3. Add cscope support in Emacs config file. emacs(Require ' Xcscope)4. Generate the kernel source index fileIn the top-level directory of the kernel source

Windows and Linux dual system installation

Practice yourself on a desktop computer Windows and Linux dual system installation1. System Selection:(1) Windows is WinXP or Win7;(2) Linux is RHEL6.5 or oraclelinux 6.5;2, installation step:(1) Partitioning the hard diskcapacity less than2Tof

Disable ip segments and icmp packets in centos

Disable ip segments and icmp packets in centos Supplement :: The command for a single IP address isIptables-I INPUT-s 124.115.0.199-j DROP The command for sealing IP segments isIptables-I INPUT-s 124.115.0.0/16-j DROPIptables-I INPUT-s 124.115.3.0

View raid information and disk information in CentOS

View raid information and disk information in CentOSSometimes you want to know how many disks are on the server. If raid is not performed, you can simply use fdisk-l to see it.But after raid, we can't see it. So how can I check whether raid is

Common Linux commands

Common Linux commandsCommand [Option] [parameter]------------------------ Positioning ------------------------Cd webapps/-- locate webappsCd .. -- return to the parent directoryCd--- return to the last directoryCd -- return to the home directory--

Red Hat Enterprise Linux 6.6 installation experience, hat6.6

Red Hat Enterprise Linux 6.6 installation experience, hat6.6 Red Hat Enterprise Linux 6.6 has five options on the first installation interface, which is different from the previous Red Hat Enterprise Linux 5.x installation interface. Install or

Install and configure GNOME in Ubuntu 14.04

Install and configure GNOME in Ubuntu 14.04 On Ubuntu 14.04, the classic GNOME interface is basically supported. The installation and configuration steps are as follows: 1. Install gnome-session-flashback Sudo apt-get install

PCRE configuration shared library

PCRE configuration shared library Problem information: ./Nginx: error while loading shared libraries: libpcre. so.1: cannot open shared object file: No such file or directory Cause: the PCRE Library is not installed, or the PCRE Library is

9 key notes for in-depth understanding of computer systems

9 key notes for in-depth understanding of computer systemsIntroduction A deep understanding of computer systems is a big part for me. To be honest, I did not finish the entire process from start to end. Instead, I selectively read some chapters that

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