Linux

Is there a method for batch inspection? Some. We use NC to quickly detect the openness of the port.The use of the NC detection portNc-z-W 10-u%ip%%PORT%-Z indicates detection or scanning of ports-W indicates time-out-U means that the UDP protocol is

Vim Editor Basic operation (very basic, Vim function is very powerful ~)There are three modes of VIM: Command mode, insert mode, ex mode.Press ESC in any mode to enter the command mode, press the I key to enter the insertion mode, press: Enter the

Vi : W Save the file without exiting VI : W File Save the modification to file without exiting VI : w! Forced to save, do not launch VI : Wq Save the file and Exit VI

1. Set the agent:. ~/.proxyenv1#!/bin/SH2 3# forTerminal4Export proxyserveraddr=123.123.123. 1235Export proxyserverport=80876Export http_proxy="/HTTP $PROXYSERVERADDR: $proxyserverport/"7Export https_proxy="https://$proxyserveraddr: $proxyserverport/

#test. sh #!/bin/bash dir=/home/test while read line do host= ' echo $ line| awk  ' {print $1} '  passwd= ' echo  $line  | awk  ' {print $2} '   $dir/expect_ssh.sh  $host   $passwd  & done This article is from the "-= lake-side Bamboo =-" blog,

Explanation of common Linux Performance Detection commands and linux commands 1. uptime [Root @ smgsim02 ~] # Uptime15:08:15 up 98 days, 2 users, load average: 0.07, 0.29, 0.14 The number of times the system has been running since the current time

Linux Server restricts FTP user access, linuxftpFile Transfer Protocol (FTP) is a Protocol used to upload and download files between computers. FTP works in Client/Server mode. The FTP server continuously monitors FTP requests from distant clients.

Shell sed instance details 1. sed (Stream Editor) 1. Locate the row: Sed-n' 12 ,~ 3 P 'pass # Starting from 12th rows until the next 3 multiple rows 12-15) Sed-n'12, + 4p' pass # Starting from 12th rows, 4 rows 12-16 rows in a row) Sed-n' 12 ~ 3 P

Linux kernel Crash analysis (1) During work, we often encounter some kernel crash situations. This article analyzes the crash output information based on the kernel. The kernel version used is Linux2.6.32. The lifecycle of a process ranges from

Use Apache in Linux to implement domain name Forwarding (Tomcat/JBOSS) Install and configure JDK in Linux. There is a lot of information on the Internet; When installing apache, you may encounter many problems, such as APR not found and pcre-config

Process Management in Linux (1) In the operating system, process is a very important concept. I. Knowledge about processes in Linux 1. What is a process? Generally speaking, a process is a running program. The process descriptor PID is used to

Distributed Control System github skills Ignore spaces when diff Some modifications only add or remove spaces. Add? W = 1 can be ignored.View the submission history of an author Add? In URL? Author = username, for example:

Use redis proxy twmproxy in linux (1) Twemproxy, also known as nutracker, is a fast and lightweight proxy program that supports memcache and redis protocols. It is mainly used to reduce the number of connections of the backend cache server. The

VPS back up website files and shell script tools from databases to cloud storage The tool shared today is also related to backup and remote backup. This tool is boring, although WordPress already has a backup plug-in such as wp2pcs. I believe that

Explanation of common Linux Performance Detection commands   1. uptime [root@smgsim02 ~]# uptime 15:08:15 up 98 days, 2 users, load average: 0.07, 0.29, 0.14 The number of times the system has been running since the current time the number

Compile and install the memcached service instance tutorial in linux and the memcached instance tutorial Let's take a look at how to compile and install the memcached service in linux. System: Ubuntu 13.10Step 1: Install libevent-dev$ Aptitude

Vim buffer and window operations, vim window ############# Buffer zone : E (: open) open the New Buffer: Ls (: buffers) list all buffers in the list/Bs/bv/be (BurExplore shortcut): Buffer 2 switch buffer: Bnext/bn (Ctrl 6) Next Buffer: Bprevious/bp

Manually add CentOS self-starting service1. write scripts and modify execution permissions.Vim myservice. sh, chmod + x myservice. sh#! /Bin/bashCase "$1" inStart)Echo "Starting myservice ...";;Stop)Echo "Shutting down myservice ...";;Restart)Echo

Create partitions in CentOS 1. Disk Partition Basic knowledge: Hard Disk classification, MBR, disk partitioning, fan, track, and sector of the Disk 2. Create partitions in Linux Fdisk-l Fdisk/dev/sda View help by m View partition

Three methods for using help in CentOS 1. Three ways to use help: Command -- helpMan command Info command 2. Differences: -- Help, fast and efficient Man, summaryInfo, complete, detailed ** Usually, -- help and man are used. Eg: