Halt Command

Function Description: Shut down the system. Syntax: halt&http://www.aliyun.com/zixun/aggregation/37954.html >nbsp; [-DFINPW] Supplemental Note: Halt will first detect the runlevel of the system. If the RunLevel is 0 or 6, shut down the system, or call shutdown to shut down the system. Parameters:-D don't remember in wtmp ...

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When you are finished, it is not a good way to turn off the power directly. This may cause the updated files to be corrupted or even corrupt the file system directory structure. Linux has a number of secure shutdown and restart systems, which are outlined in this section. Terminating or shutting down the System init command allows you to modify the current runlevel, the RunLevel value is 0 for shutting down the system, the following is an example: [Root@bigboy tmp]# init 0 Fedora also uses the shutdown command to do the same function. Often ...

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If you only want to see the first 5 lines of the file, you can use the Head command, such as: Head-5 passwd If you want to view the last 10 lines of a file, you can use the tail command, example: [Root@localhost software]# head-5/etc/ Passwdroot:x:0:0:root:/root:/bin/bash &http://www.aliyun.com/zixun/aggregation ...

System security has always been our attention in the server http://www.aliyun.com/zixun/aggregation/18665.html "> Application field of the more important links, after all, normal production environment for system security level is also relatively high, Now many server operating systems choose Linux, and in this field platform is undoubtedly CentOS Linux is the industry leader, CentOS based on red Hat Enterprise Li ...

With the popularity of the Internet and the continuous development of network technology, the confidentiality requirements of data are more and more high. In the usual server/client mode mis development, because the program to maintain the connection with the database server, for the flexibility and extensibility of the program, the join parameters (user ID and login password) can not be written in the program death (in fact, writing death is not a good way), There are two kinds of general methods: one is to store the join parameters in the registry, and the other is to read the INI file directly. And the safety of several methods are not very good, give people the opportunity. Myself...

The system default boot level is set in the file/etc/inittab, variable Initdefault. When set to 3 o'clock, the system starts in text mode, and when it is set to 5 o'clock, the system will start in a graphical interface mode. This is part of the file (delete the Initdefault line you don't need): # Default RunLevel. The runlevels used by RHS are:# 0-halt (does not set Initdefaul ...

After editing the/etc/inittab file, how do we not start the server and take effect directly? [Root@localhost usr]# Vi/etc/inittab # Inittab is only used by upstart for the ' default runlevel.## adding other revisit Here would HAVE NO multiplying on YOUR ...