essential system administration

The interface of educational administration system is more like the interface of chatting with friends, lacking certain function buttonAlthough it seems concise but to a certain extent, it should limit its function to play.Freshman in the elective class to ask me how to use the public number of elective courses, and even many sophomore students do not know the specific role of the public.In fact, the public

Curl crawls the data of the educational administration system. you have come to consult with us again. I have encountered this situation again. The code is like this. lt ;? Phpheader nbsp; ( nbsp; "content-Type: nbsp; text/html; nbsp; charset = utf-8" nbsp;); nbsp; re curl crawls educational administration system

Recently discovered that the LOSF command is particularly useful in system administration, summarizing the information I have collected as follows1. When there are no parameters behind lsof, the command will list all files that are open by all processes in the current system#lsof |NL #nl命令打印出行号2. The following commands indicate the process of opening a file#lsof

includes a file system of size 0 blocks -B,--block-size= size block with specified -H,--human-readable file system size in an easy-to-understand format (e.g. 1K 234M 2G) -H,--si similar to-H, but takes 1000 of the time instead of 1024 -I,--inodes displays inode information instead of block usage -K is--block-size=1k -L,--local only displays the native file

: DMESG | grep CPU3. View Memory Usage Status: Free [-b|k|m|g]-B in bytes-K in kilobytes (default)-M in megabytes-G in GB4. View CPU Information: Cat/proc/cpuinfo5. View System version: Cat/etc/redhat-release6. Display system start time and average load: uptime7. View system-to-kernel information: uname [Options]-A view all relevant information about the

time (if the URL value is the real-time view of the address). Return the entire page back and we'll see how to parse this page: Document content = Jsoup.parse(doc.toString()); divs=content.select("#ctl00_ContentPlaceHolder1_ASPxRoundPanel1_BZ"); String res = divs.text().trim(); LogUtil.e"----------> res = " + res.toString());It's easy to choose by selecting the method we care about the content, and we just need to care about the balance to the information, and after our analysis above, the ID o

the TCP/IP protocol and grab packet, so has not been able to update it.By now a week more seems to forget that there is something interesting to talk about, so let it end, devote yourself to the new study.-----------------End--------------------Thursday, August 21, 2014Attached: Which originally wanted to be funny, but now has forgotten the fun of the topicshare is () shared with the installation path of the Windows operating system. A)admin$b)ipc$

debugs, no problem. Finally I use Firefox browser, Firefox login to see the request information, it is strange that unexpectedly found no cookies,This is very strange, in the group of Httpclent asked, some said debugging tools, I think it is also, then try Httpwatch,firebug, Google Browser, there is a big brother introduced the use of Fiddler2. The result is still no cookies, a wry smile, but found Fiddler2 this tool good, analytical very detailed, interested can be downloaded to use.Usually is

The Telnet component is a remote administration tool component from the WINDWOS system, because there is a certain security privacy hazard, so the Windows system does not carry it by default and does not start the Telnet component service! Of course, if you like this feature, you can also perform the open! Then look at how to open the Telnet component service for

View network configuration information ifconfig View system Resource information (like win system Explorer) Top (ps:load average load Task process Cpus/mem Swap swap partition similar to win system virtual memory) View Memory usage Free-m #-m represents the default KB in megabytes View System Processes Ps-ef Vi

Stat Displays details of the specified file, more detailed than LSWho shows online loginWHOAMI Show current Operation userHostname Display host nameUname Display System InformationTop dynamic display currently consumes the most resources process informationPS Display transient process status Ps-auxDu view directory size Du-h/home with units display directory informationDF View disk size df-h with unit display disk informationIfconfig Viewing network c

Written in front: After using python for reptiles, found that it has not used my old line of PHP crawl, plus a senior dog has just started to meet the so-called pit * training, and can not go out to find an internship, so can only entertain themselves, just see the recent school operation of the public number, there are binding school number, Then query the functions of various things, and then want to imitate this function to do. Functional interface with the use of TP development, but also rel

ChkconfigFunction: Update (open, close) or query the system service RunLevel information, on indicates on, off indicates offCommon parameters--list View all system service run level information[Email protected] ~]# chkconfig--list[Email protected] ~]# chkconfig--list Crond # #指定系统服务名Crond 0:off 1:off 2:on 3:on 4:on 5:on 6:off--level setting a system service at a

Into the main interface, see so long menu, I felt a hint of malice, and then I want to use this system to query my public elective class, I put the menu to the end, found that I need to play five letters, I think it's OK, just follow the fight.So I clicked on the input field and was ready to start typing. But what?The menu unexpectedly jumps to the top, which makes me have to pull the long menu to the bottom again, and then remember the five letters.

-----------------------------------------------------------------------------------wget--Can download files on some serversSCP-Remote File copy programSCP index.htlm [email protected]/:root --Copy the native INDEX.HTLM to the root directory under the remote 172.16.45.220 host, log in as rootHostename bob.com--temporarily change the hostname, currently in effect, restart to restore the previous host nameVim/etc/hostname--Change the hostname profile to take effect permanentlyVim/etc/hosts--Modify

Login box of the strong intelligence educational administration system SQL Injection File: \ logs GL \ logincheck. asp\ Shortxs \ LoginCheck. asp\ Login admin \ LoginCheck. asp Multiple login boxes are injected. Here I only paste the code of the first file. OpenWindow = trim (Request ("OpenWindow") '= "" Response. cookies ("OpenWindow") = trim (Request ("OpenWindow") 'response. write OpenWindow 'response. w

After the verification code is enabled for logon, The Zhengfang educational administration system can change the logon page address to bypass the verification code, so as to write a script to brute force crack the jwc01 password, or scan weak passwords in the student ID segment to steal student data.By default, you need to enter the verification code. After changing default2.aspx in the address bar to defa3

80/tcpBased on C/S modelLoading httpd/var/www/html/ETC/HTTPD/CONF/HTTPD.CONF Master configuration fileSELinuxAn access model developed by the U.S. Security ServiceEnableDisabledEnforing: Mandatory mode if our actions violate selinux, force a refusalPermissive: If you violate SELinux, you will only be warned that you can still accessFiles can be set up with permissions called DAC active access controlSELinux mac for files or directories, mandatory access controlTwo important elements related to S

Cd Ls Pwd Clear chmod Chown Chattr Useradd Userdel Groupadd Vi/vim Cat More Less Mv Cp Rm RmDir Touch Ifconfig IP addr Ping Route Echo Wc Expr Bc ln Head Tail W.H.O. Hostname Top Df Du Netstat Ss Kill Alias Mans Tar Zip Unzip Jar Fdisk Free Uptime Lsof Lsmod Lsattr Dd Date Crontab Ps Find Awd Sed Grep Sort Uniq Service:DhcpSambaDnsApacheMysqlNginxZabixSquidVarnishLvsKeepalivedEL

() #调用函数 disk_func () main () #调用主函数3, oriented to the image programming[[emailprotected]opt]#vimpyserverclass.py#!/usr/bin/env Python#_*_coding:utf-8_*_classserver (object): #class关健字, name of the Server class, The object class, the name of the object class, is the parent class def__init__ (Self,ip, hostname): #定义构造器 self.ip=ip self.hostname=hostnamedef Set_user (Self,user): self.test=userdefping (SELF,IP_ADDR): print "pinging% sfrom%s (%s) useris%s "% (ip_addr,self.ip,self.hostname,self.t