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52416 52404 1%/sdblabel/dev/sr0 0 0 0-/media/rhel_6.4 i386 Disc 1Du command:Du does not add parameters, the size of files and directories under the current path is listed by default-S: Only the total size is listed[Email protected] ~]# du-s/root/43700/root/-H: Displayed in a human-readable way[Email protected] ~]# du-sh/root/43m/root/--max-depth: Specify the maximum depth[email protected] ~]# du--max-depth=1-h/Only the bottom level of the root path occupies space, which is commonly used to anal

Check the Persistence.xml.unit name="***" transaction-type="RESOURCE_LOCAL">Note that we did not find the persistence unit we declared.The line:vider>org.hibernate.ejb.HibernatePersistenceDoes not exist in the system and needs to go to hibernate websiteHttp://hibernate.org/30.htmlDownload Hibernate entitymanager Import into the projectNote:Hibernate 3.2 and later releases support JPA, with three sub-projects involving JPA,Each of them is:-hibernate the core implementation of the Core:hibernate f

1 //Study of Virtual destructor function2 //If an external program uses the new operator to define a dynamic object, the delete operator is used to delete the dynamic object when the external program ends.3 //However, if the external program takes advantage of the assignment compatibility principle, assigns the address of the derived class object of the dynamic request to the base class object pointer, because the delete operator implies the automatic invocation of the destructor4 //so at this p

Title Description:Given a linked list, swap every, adjacent nodes and return its head.For example,Given 1->2->3->4 , you should return the list as 2->1->4->3 .Your algorithm should use only constant space. Modify the values in the list, only nodes itself can be changed.Problem Solving Ideas:I just want to say that recursive Dafa is good.The code is as follows:/** * Definition for singly-linked list. * public class ListNode {* int val; * ListNode Next; * listnode (int x) {val = x;}}}

#上课的时候咩有听太懂, Blur and learn one sideOriginal fileGlobalLog127.0.0.1local2 Daemon Maxconn256Log127.0.0.1local2 infodefaults LogGlobalmode HTTP Timeout connect 5000ms timeout client 50000ms timeout server 50000ms opt Ion Dontlognulllisten Stats:8888stats enable stats URI/Admin Stats Auth admin:1234frontend oldboy.org Bind0.0.0.0:80option httplog option httpclose option forwardfor logGlobalACL www hdr_reg (host)-i www.oldboy.org use_backend www.oldboy.orgifwwwbackend www.oldboy1.org Server101.1000.

);//initialized thread attribPthread_attr_setdetachstate (attr, pthread_create_detached);pthread_t Tid;Pthread_create (tid, attr, (void*) print_selfattr, NULL);Pthread_attr_destroy (ATTR);Pthread_join (Tid, NULL);Return}int main (){Create_demo ();Test_threadn ();Test_threadattr ();return 0;}Attention:Using Gcc–g–wall Main.c–o main will make an error.Undefined reference to ' pthread_create 'Undefined reference to ' Pthread_join 'Collect2:error:ld returned 1 exit statusHowever, using gcc–g–wall-c

Small part of the recent determination to say goodbye to XP, finally changed to Win7, but compared to Windows XP system "Fast", Windows7 still difficult to match. Quick more than 50 seconds, slow 1-2 minutes, is not a headache without words?! There are some related Win7 system optimization tools on the Internet, which can solve some problems. But if you use some of the tools with virus Trojan, it is more cup! In fact, we can use these optimization tools, the following methods for simple optimiz

1, use the Win+i key to pull out the control Panel, and then click on the Control Panel "time, language and area", click "Change time Date and number format"; 2, then in the Open Area window, the "short time" at the time modified to hh:mm; 3, and then the "long time" at the time modified to "HH:mm:ss", and then click the OK button to save; 4, the completion of the setup, we can see the taskbar time area has been modified to 24-hour sy

17.01: Simple Configuration Controller1, a ControllerProtected Modelandview handlerequestinternal (HttpServletRequest request,HttpServletResponse response) throws Exception {return new Modelandview ("reg.jsp");}2. Web. XML found SPRINGMVC file3. SPRINGMVC Find Controller17.02: Parameter Mapping Controller1. No controller2. Ibid.3. Return directly to that pageclass= "Org.springframework.web.servlet.mvc.ParameterizableViewController" >17.03: File Name Mapping controller1. No controller2. Web. XML

工欲善其事, its prerequisite. Today, we will provide 24 selected software for our designer friends, and recommend the top designers from the FastCompany to visit HUGE, ZAPPOS, UsTwo and Okfocus to see what software they usually use to help with the work. Master are inseparable from the artifact, the students see which is suitable to quickly take home. The App described below may be as mundane as gamil, and it can be wonderful, full of good tools to help y

What is a process pool?When a master process needs to create a child process to complete multiple tasks during execution, if fork is used to create and then recycle,When you create a recycle, the performance of the main process is reduced. Therefore, the process pool is created beforehand.When you need to create a few sub-processes, you can directly take advantage of multiprocessing in the process of dynamic genetic multiple processes, but if it is hundreds or even thousands of targets, manually

16550aserial8250.1 1:ttys3 at MMIO 0x30000018 (IRQ = 16550A) are a few useful commands: view the resources of each serial port, if not normal initialization has a problem cat/proc/tty/driver/serial read out the data from the serial port (baud rate is on CAT/DEV/TTYS0 View Iomemcat/proc/iomem Reference: 1, "UART driver analysis of the Linux device model" http://blog.chinaunix.net/u1/51562/showart.php id=11109032, "The experience I've been driving for st16c554 transplant under Linux-2.6.32.2," HT

;} catch (IOException e) { E.printstacktrace ();}}}}(c) Regular expression advanced use:Find a child stringString S1 = "123-45678-987-11"; Pattern pattern = Pattern.compile ("\\d{3,5}"); Match five numbers Matcher matcher = Pattern.matcher (S1); System.out.println (Matcher.matches ());//Falsematcher.reset ();//Reset the match, set its add position to zero System.out.println (matcher.find ());//True, because the match is reset, the System.out.println (Matcher.start () + "-" + matcher.end ()) is f

, there is a possibility of deadlock4, multi-threaded implementation of two different waysImplementation principle:Inherit thread: Because the subclass overrides the thread class's run (), when Start () is called, the Run () method of the subclass is searched directlyImplement runnable: A reference to the runnable is passed in the constructor, the member variable remembers it, and the start () call to the run () method internally determines whether the reference to the member variable runnable i

); } } } Else{Getbean (beanname); } } } //Trigger Post-initialization callback for all applicable beans ... for(String beanname:beannames) {Object singletoninstance=Getsingleton (beanname); if(singletoninstanceinstanceofSmartinitializingsingleton) { FinalSmartinitializingsingleton Smartsingleton =(Smartinitializingsingleton) singletoninstance; if(System.getsecuritymanager ()! =NULL) {accesscontroller.doprivileged (privilegedaction{

Connection Session = Con.createsession (false, Session.auto_acknowledge); MessageProducer messageproducer = session.createproducer (destination); Set Object TextMessage message = Session.createtextmessage (); Message.settext ("Hi"); Messageproducer.send (message); Messageproducer.close (); Session.close ();} catch (Namingexception e) {//Todo auto-generated catch Blocke.printstacktrace ();} catch (JMSException e) {//Todo Auto-ge Nerated catch Blocke.printstacktrace ();} Finally {//close resource

type in the method.4). Anonymous Inner class:Example:Class anonymousclass{@SuppressWarnings ("deprecation") public void print (Date data) { System.out.println ( Data.tolocalestring ());}} public class Anonymousclasstest {public static void main (string[] args) {Anonymousclass a = new Anonymousclass (); an.print (new date ()); An.print (new Date () {@Override @deprecatedpublic String tolocalestring () {//TODO auto-generated method Stubreturn "HAHA";}});}}Results:2015-3-17 21:28:11HAHAAn

Main content: Segment error, type promotion, sizeof ' A '#include Output:Program Ape---C language details 24 (segment error, type promotion, sizeof ' A ')

The previous section says how to create and run a project using Django, which says how to add a blog app.The relationship between a project and its applicationBefore adding an app, let's look at what's different between the project and the app.A project is a combination of configurations and their applications that are related to a particular Web site. A project can contain multiple apps.An app is a WEB app that provides functionality-for example, a blogging system, a database of public records,

::error_code compute_file_checksum (std::string file_name) {HANDLE file =:: CreateFile (File_name.c_str (), generic_read, 0, 0, Open_always, File_attribute_normal | file_flag_overlapped, 0); Windows::random_access_handle h (service, file); Long buff[1024]; checksum = 0; size_t bytes = 0, at = 0; Boost::system::error_code EC; while (bytes = Read_at (h, in, buffer (buff), EC)) > 0) {at + = bytes; bytes/= sizeof (long); for (size_t