Linux

Details about common options of netstat-N: the IP address and port are directly displayed without resolution.Otherwise, the port will be parsed to: 80 to www, 22 to ssh, and 13 to daytimeResolve the IP address to 127.0.0.1 localhost, and 0.0.0.0 *-L

Sh codeLast login: Sat Sep 10 14:57:04 2011 from 192.168.0.142[Root @ oplinux ~] # IfconfigEth0 Link encap: Ethernet HWaddr 00: 0C: 29: 3A: 22: CAInet addr: 192.168.91.128 Bcast: 192.168.91.255 Mask: 255.255.255.0Inet6 addr: fe80: 20c: 29ff: fe3a: 22

Assume that the system is centos. First downloadFtp://ftp.mrunix.net/pub/webalizer/webalizer-2.23-05-src.tgz Then,Yum install gdYum install gd-devel Tar zxvf webalizer-2.23-05-src.tgzCd webalizer-2.23-05./Configure -- with-language =

In bash, background tasks are used to implement multi-process tasks ". In the uncontrolled mode, all tasks are executed in the background no matter how many tasks exist. That is to say, in this case, the "process" of each task is executed

Using the cygdrive command, you can upload local files to the target linux server in the cygwin window ,,, In the cygwin window, run the following command: Test @ test ~ $ Cd/cygdrive/f/20110929Test @ test/cygdrive/f/20110929 $ Ls Upload All tar.gz

Auto Start ORACLE serviceFor oracle users:Vi Start_ORA.sh--------------------------------Echo "Begin to start the oracle! "Lsnrctl startSqlplus/nolog Connect/as sysdbaStartupExitEOFEcho "Oracle just have been started! "Exit Auto disable ORACLE

1. instance 1What kind of shell can make the $2 of file1 and file2 different and get the global $0?Note: When comparing the $2 files, you must compare them only when the first column is the same.1.1 Operating Files# Cat file100001 2000002 3100003 040

Use the. htaccess file to control users' access# Vim/etc/httpd/conf/httpd. confAllowOverride authconfig# Mkdir/var/www/html/tips# Cd/var/www/html/tips# Vim. htaccessAuthName "htaccess"AuthType "basic"AuthUserFile/var/www/html/tips/wwwpasswd // use

A simple dd script is written for testing. #! /Bin/shFor (I = 1; I & lt; = 5; I ++); do{Dd if =/mnt/ufstest/test $ I. ts of =/dev/null bs = 480 K}DoneDuring execution, I found that dd can only read one file at the same time, not achieving my effect.

  I used to use SSH to log on to the company's server! However, today it went on strike.   Enter commands on the terminal to log on to the server as usual:   Sudo ssh-l root 192.168.0.88   Sorry, which prompts the following information:   @ WARNING:

  Seeing that it was about to end with the release of Ubuntu 11.10, taking advantage of the time available on the 11th and the download peak, I was anxious to taste the fresh, and upgraded my laptop from 11.04 to 11.10, the upgrade was smooth, much

Echo the STRING (s) to standard output. -N do not output the trailing newlineOutput text does not wrap-E enable interpretation of backslash escapesThe Escape Character and the special character behind it are interpreted as special meanings.-E

Q1. What is a physical address? What is a virtual address? What is a linear address? A: 1) define the memory space provided by the physical memory stick on the motherboard as the physical memory space. The actual address of each memory unit is the

Vi and vimThe vi editor is a standard editor for all Unix and Linux systems. It is equivalent to notepad in windows systems. It is not as powerful as any latest text editor. It is an indispensable tool for Linux. The vi editor is identical for any

A CentOS server has been deployed recently. The requirement is that disks other than the system will be automatically mounted after startup. This should be a common requirement ~~ Online implementation is relatively simple, but there is a problem!

Linux scheduled task system Cron entryCron is a linux scheduled execution tool that can run jobs without human intervention. Since Cron is a built-in service in Linux, but it does not automatically get up, you can use the following methods to start

Q1. What is interruption? What is an exception? What is the difference between the two?A: 1) interrupt control is generated to overcome the low processor efficiency caused by the use of the program query Control Service for I/O interfaces, its main

To install Tomcat, you must first install JDK. If CentOS updates the software package, an openJDK is installed by default, but it does not feel as good as SunJDK when dealing with some problems.Here, we first unload the default JDK of the system,

I. Linux partition Concept First, I would like to introduce the partition concept in linux, but it hurts me from the beginning. In Linux, it is stipulated that each hard disk device can have a maximum of four primary partitions (including the

Probe, disconnect, id_table, the first of the three elements to appear is id_table. What is it? We have said that a device can only bind one driver, but the driver does not support only one device. The principle is very simple. For example, if I