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1) Tomcat is not properly shut down via script (viaport: Shutdown command sent via 8005 Port)Because normal shutdown (Viaport) will have such a sentence before pause warn log: org.apache.catalina.core.StandardServer await A valid shutdown

From Sysvinit to SystemdIn recent years, the Linux system init process has undergone two major evolution, the traditional sysvinit has faded out of the historical stage, the new system upstart and SYSTEMD each have the characteristics, but more and

VI Edit Command1.VI [file_name]  //Edit files2.h, J, K, L //Move cursor3.ctrl+f  //Page Down4.ctrl+b  //PAGE UP5.ctrl+d  //Upside down half page6.ctrl+u  //Turn up half a page7.n+  //n represents a number, jumps to the n characters of the current

Orphan process and Zombie process: if the parent process exits first and the child process does not exit then the parent process of the child process becomes the INIT process (any process has a parent process) if the child process exits first and

Linux VIM command: 1.vim# enter vim on the command line, enter the VIM editor 2.i# Click the i key, the lower display--insert--#插入命令, in Vim may have any character 3. esc# exit I (insert) command for other commands to use 7.:! Command temporarily

Orphan process and zombie processIf the parent process exits first and the child process does not exit then the parent process of the child process becomes the init process. (Note: Any process must have a parent process)If the child process exits

Service httpd Restart restart ApacheService mysqld Restart restart MySQL[-] [RWX] [R-x] [r--]1 234 567 890421 421 421CHGRP: Change the file group example: CHGRP root (user group) testing (directory)Chown: Change File owner example: chown cent (user)

On-line search for a long time have no results, the same problem is quite a lot, are not resolved, and some end process to solve the way. Although I did not completely solve, but may be able to help meet the same problem of friends, the operation of

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++Until cycleWhile CONDITION; When the Docondition-turedone is true, enter the cyclic until CONDITION; Do loop body when done is false, enter the loop++++++++++++++++++++++++++++++++++++++++++++

2017 the latest enterprise face Test shell (iv)First, the draw script (1) requires the following:1, write a script execution, enter the name, generate a random number 01-99 between the number;2, after entering the name, the screen output information,

The volatile reminder compiler can change the variables that are defined later, so the compiled program reads the data directly from the variable address each time it needs to store or read the variable. Without the volatile keyword, the compiler

WEB projects often encountered problems are the same user name multiple landing problems, the corresponding solution is also a lot, summed up is nothing more than these solutions: the login after the user name into the database table; login username

1 Basic implementationsThread (target= function name, args= (argument passed as tuple, add ","))th = Threading. Thread (target=run,args= (i,)) is the instantiation of a threadTh.start () is the start function called on the instance.Internally, the

A new process created by Fork is called a subprocess (child process). The function is called once, but returns two times. The difference of two returnsis that the return value of the child process is 0, and the return value of the parent process is

People who have used Linux will know that there are really a lot of commands in Linux, but people who have played Linux have never bothered by the fact that Linux commands are so many, because we only need to master the commands we use most often.

1.Execute File:./File: Execute the fileSH startup.sh Execute the file2.Vi Edit VI Command:: w save file but do not exit: W file saves the modification to file and does not exit: w! Force save, not eject: Wq save File and exit: wq! Force the file to

Before writing the IF condition to judge, generally in writing the shell script may use the dead loop at this time need while statement, it is the best way to do the dead loop, before the while loop need to tell the file test, because it is often

This is the failure of the shutdown function or an abnormal failure. How to solve this kind of trouble? , shutdown process and fault reason The Shutdown program for Windows will perform the following functions during shutdown: Complete all disk

There are many ways: Exit VI When you are finished editing a file, you are ready to exit VI when you return to the shell, you can use one of the following methods. In command mode, even press two Capitals Z, if the currently edited file has been

Zombie Process: In the case of a child process does not exit, the parent process exits, the child process is taken over by the Init process, but the child process will not exit normally, and will not be withdrawn after the process's resources, so