Linux

The Vmstat command is the most common Linux/unix monitoring tool that can show the status of a server at a given time interval, including server CPU utilization, memory usage, virtual memory exchange, IO Read and write situations. This command is I

This article basically introduces all: http://www.2cto.com/os/201308/238733.htmlSome simple memo:1. Apt-get can be installed under Ubuntu;2. configuration file/etc/rsync.conf Default does not exist, need to create manually;3. You can start rsync

1.MAC Media access Controlis a solution to resolve the underlying data traffic conflict. Thus, for each host that accesses such a network an ID identifier, this ID identifier is called the MAC address.2.CSMA/CD (Carrier sense Multipath access

NAMERhn_check-check for queued actions on the portal and execute themSynopsis/usr/sbin/rhn_check [-v] [--verbose]DESCRIPTIONRhn_check is a client program this connects to the Red Hat Network backend servers and retrieves Informa tion associated with

through the most learning, I deepened the understanding of LVM, here, I write it blog, one is to facilitate their own memory, and the second is to let the Linux beginners learn together. First we introduce the concept of LVM, and expand the detailed

The shell I'm using for Ubuntu comes with bash.quotation marks in 1.bash': (single quote) What is the output of a strong reference?"; (double quotes) Weak references are variable substitution·; (Anti-quote) command replacement2.echo-N No Line

My erroneous understanding of Linux high-end memory is derived from this article, the article saidPhysical Address = Logical Address –0xc0000000: This is the address translation relationship for the kernel address space.This sentence suddenly

First, the Process Control theory FoundationProcess: is a running activity of a program with a certain independent function. The program is static and the program runs as a process.1, the characteristics of the process:Dynamic: Distinguishing

1. Fix a MAC address, especially when using multiple virtual machinesIn the Linux environment:Log in as root and add these three sentences to the/etc/rc.d/rc.local.Ifconfig eth0 Downifconfig eth0 hw ether 00:0c:18:ef:ff:edIfconfig eth0 upThis

1, check that the port is occupied by that processExample: NETSTAT-ANP | grep 1160PS: View Port 1169 is occupied by that process.2, finding the processExample: Ps-ef | grep ' Tomcat 'PS: Find process with Tomcat in process name3, terminating the

DF is the acronym for disk filesystem, mainlyYou can also add a lot of useful tags behind it.Df-h is displayed in a format that is suitable for human reading, that is, how many grams (giga bytes) and how many m units of capacity are displayedDf-a is

The first type: Use the command to modify (direct immediate effect, restart failure)#ifconfig eth0 192.168.0.1 netmask 255.255.255.0 upDescriptionEth0 is the first Nic, and the others are eth1,eth*192.168.0.1 is the IP address configured for the

1, learn to use the TAR command compression (decompression). tar.gz file tar zxvf *.tar.gz tar jxvf *.tar.gz22, learn the simple copy CP command CP Yuan Mudi3, the ordinary user to switch to the Super User command su– su-root4, view the current

Gradually feel the decline of windows, at least in the Chinese market. Personally think two reasons: one, semi-mandatory changes in user habits, Windows 8 Integration of Windows RT, people are a little overwhelmed, or "can not play with you happily",

Linux tomcat one-click maintenance script (worthy of favorites), linuxtomcat #! /bin/sh a="/usr/share/tomcat7/webapps/ROOT"b="/usr/share/tomcat7/webapps/ROOT.war"c="ROOT.war"tomcat_stop="/usr/share/tomcat7/bin/shutdown.sh"sh "$tomcat_stop"ps aufx |

Precautions for running Linux for loop commands: If the for loop command contains some symbols, you must use(). For I in {1 .. 4}; do(Python/data/UGCRobot/manage/Scheduler. py 1.log>/dev/null 2> & 1 &); Done Linux: execution sequence of the

Start IDLE in Python3.4 under Ubuntu14.04 and ubuntu14.04 1. python has been installed in Ubuntu14.04 LTS. You can enter ls/usr/bin | grep python in Terminal (CTRL + ALT + T. To run python2.7, enter python on the terminal. To run python3.4, enter

Linux compression tool competition on CentOS 6.5 x86-64 (1) Bkjia: this year, I want to forward an interesting article by Gionatan Danti, which was first published on my blog http://www.ilsistemista.net. File compression is an old trick: One of the

Autotools induction, autotools Recently, many linux projects are used for compiling autotools. Autotools is an automated compilation tool. The main function of Makefile is to generate Makefile. Because Makefiel is directly written, its dependency is

Test the accidental deletion of data during linux recovery and test the accidental deletion of data during linux recovery What we need to do immediately after accidentally deleting the data: Do not write, do not save, detach the disk where the