1. Graceful exit of the process 1.1.kill-9 PID problemsIt is easy and efficient to force a process to be killed by Kill-9 PID on Linux, so many program stop scripts often choose how to use the kill-9 PID.Whether the Kill-9 PID of Linux or the
Reis essentially a small language.The object to manipulate is a string.Re.findall (): A list is returned. Matches all elements that meet the criteria.Re.search (): An object is returned. Matches only the first element found, and if the match
Process ExitThe process exit of Linux is divided into two types: normal exit and abnormal exit.1. Normal exitA. Execute return in the main () function.B. Call the exit () functionc. Call the _exit () function 2. Abnormal exitA. Calling the About
1. Finish () method
This method can end the current activity, but if your app has many activities, it seems a little too slow to use this method.In addition, there is also a method finishactivity (INT requestcode). For this method, first look at the
Event:Because each thread is running independently, if a thread's run needs to run its own next operation through the running state of another thread. The event object is required to support this operation. It runs the thread waiting for some time
Processes are like human beings, and we create a process through the fork () function, so how do we abort the process?Process exit1. In Linux any let a process exitProcess exit indicates that the process is about to end. In Linux, process exits are
This article mainly introduces the detailed Python process and process pool (processing library), very practical value, the need for friends can refer to the following
Environment: win7+python2.7
Always want to learn multi-process or
Re (cont.):The re defaults to greedy mode.Greedy mode: Matches the string as long as possible when matching matches are met.ImportRes='ASKLDLAKSDABCCCCCCCCASDABCCCALSDACBCCCACBCCCABCCC'Res= Re.findall ('abc+', s)Print(res) Res= Re.findall ('abc+?',
Botnets
In the previous article, we have understood the concepts of parent and child processes, and have mastered the usage of System Call exit, but few people may realize that, after a process calls exit, it does not disappear immediately, but
Description in Unix, all processes except process 0 (that is, the pid=0 exchange process, swapper process) are created by other processes using the system call fork, where the process called fork creates a new process is the parent process, and the
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