honeypot trap

A. Trap1.trap is a shell built -in command used to specify how signals are handled in the script. For example, pressing CTRL + C causes the script to terminate execution, in fact the system sends a SIGINT signal to the script process, and the default processing of the SIGINT signal is to exit the program. If you want to do not quit the program in CTRL + C, then you have to use the trap command to specify ho

X. The type of the System Segment Descriptor field type is still 4 bits, and the type of encoding and representation is listed in the following table, which has a different meaning than the type of the bucket descriptor. System segmentType Type encoding Description 0 Not defined 1 Available in 286TSS

PHP, you may also fall into the trap of being asked today: $ var = 'test'; if (isset ($ var ['somekey']) {echo 'reachhere !!! ';} Will output 'reachhere !!! '? --- You may also fall into a trap when using PHP. Asked today: $ Var = 'test'; if (isset ($ var ['somekey']) {echo 'reach here !!! ';} Will it output 'reach here !!! '? --- Of course not. I want to answer the question without thinking about

performed.TrapStatements capture these sequences and can be compiled to execute a series of commands when these signals are not active. TrapThe statement syntax is as follows: trap [COMMANDS] [SIGNALS] MeaningTrapThe command is captured inSignalsThe list may contain or does not containSIGPrefix signal or signal number. If a signal is0OrExit, ThenCommandsRun the command when the shell exits. If one of the signals isDebug,CommandsThe list is executed a

...... However, for your "hard work" and positive work, it seems that others do not appreciate it. Instead, they may doubt your talents and character. In general, they think that you are a person who knows how to make a show and has a vanity. Do you feel helpless and sad when you hear these arguments? You will think, "How can I reveal my heart to everyone? Is it true that the customer is actively opposed to being mistaken? " The subtle interpersonal relationships in the office are a prism-the

Example 1:[Email protected] example]$ more trapping#!/bin/sh# scriptname:trapping# Script to illustrate the trap command and SignalsTrap ' echo ' ctrl-c would not terminate $. "' 2Trap ' echo ' ctrl-\ would not terminate $. "' 3echo "Enter any string after the prompt."echo "When is ready to exit, type \" Stop\ "."While TrueDoEcho-n "Go ahead...>"Read replyIf ["$reply" = Stop]ThenBreakFiDone[Email protected] example]$ sh trappingEnter any string after

Once a C + + expert said: see a C + + programmer is hard enough, let him write an assignment overload function can be seen! In my opinion, this is not an exaggeration. Because it really needs a solid foundation to write the operator= function well, there are a lot of pitfalls. Trap one: Don't know how to avoid self-copying Look at the code firststring string::operator= (const string RHS) { if (m_pstr! = NULL) delete [] m_pstr;

(as long as you have the address of this block of memory). Therefore, some functions use the static feature, that is, do not use the memory on the heap, nor need the user to pass in a buffer and its length. Therefore, the use of their own functions are very beautiful and easy to use. Here, I want to discuss some of the third method. Using the static memory method looks good, but it has a trap that you can't imagine. Let's use a case that actually hap

The difference between the interruption of the gate and the transfer through the trap door is only the processing of the IF sign. For the interrupt door, the if is placed 0 in the transfer process, INTR interrupts are shielded during the execution of the handler (of course, in the interrupt handler, you can open the interrupt by artificially setting the IF flag so that the response is allowed to be masked during the execution of the handler); for the

-13SIGRTMAX-12 53) SIGRTMAX-11 54) SIGRTMAX-10 55) SIGRTMAX-9(56) SIGRTMAX-8 57) SIGRTMAX-7 58) SIGRTMAX-6 59)(60) SIGRTMAX-4 61) SIGRTMAX-3 62) SIGRTMAX-2 63)64) sigrtmax-Bash-3.00 #Generally, we need to ignore four signals: Hup, Int, quit, tstp, that is, signal 1, 2, 3, 24 The following statement can be used to ignore these interrupt signals:Trap""1 2 3 24 or trap""Hup int quit tstpUse trap: 1 2 3 24 or

Non-malicious spider trap is a site of a hidden danger, belong to the slow heat of the symptoms, perhaps the first search engine will not punish it, but a long time to trap spider traps on the site is very bad. We all know that disease to enter the hospital, but often a lot of symptoms at first do not pay attention to finally found that the terminal is terminally ill, at that time the pain of physical and