The numbers before the dates in the first two lines of Example 3-1 are the major and minor device numbers that help the kernel identify the device. Similar devices usually have the same major number, such as sda3 and sdb1 (both of which are hard disk partitions). 示例3-1的前两行中日...
your bytes leave the application layer on Host A and travel through the transport and network layers on Host A; then they go down to the physical medium, across the medium, and up again through the various lower levels to the application layer on Host B in much the same way. If...
sudo apt-get install stress #ubuntu系统 yum install stress #Centos系统 然后进行 CPU 和内存的测试...
After creating a shell script and setting its permissions, you can run it by placing the script file in one of the directories in your command path and then running the script name on the command line. You can also run ./script if the script is located in your current working directory,...
容器技术发展历程 操作系统容器技术最早出现在FreeBSD上叫做 jail(虚拟化技术),2000年,freebsd4.0版本发布的技术,将一个进程放入jail(监狱)中运行,不管这个进程在其中发生怎样的错误都不会影响到系统上其他进程的运行 jail技术在Linux中的实现叫做vserver,vse
# columns, lines per column (max 15), "spill" (this is how many # entries must be in the first column before the next begins to # be used. We don't specify it here, as there's just one column. bmp-table = 60,6,1,16
struct irqaction { irq_handler_t handler; void *dev_id; ... unsigned int irq; unsigned int flags; ... const char *name; struct proc_dir_entry *dir; } ___cacheline_internodealigned_in_smp; handler:设备驱动里的中断处理函数 dev_id:设备 id irq:中断号 flags:中断标志,注册时设置,比如上...
-t 如果 name 是别名、shell函数、内建命令、磁盘文件、shell保留关键字, 则会分别输出“alias”、“function”、“builtin”、“file”、“keyword”, 如果未找到,则不会有任何输出,并返回失败状态 -p 返回执行文件的路径,如果使用-t不返回“file”则不返回任何内容。 -P 强制返回执行文件的路径,即使使用-t...
Most other editors, throughGCC error compatibility. In your build or test suites While ShellCheck is mostly intended for interactive use, it can easily be added to builds or test suites. It makes canonical use of exit codes, so you can just add ashellcheckcommand as part of the process. ...
Each table has a set of default chains that can be used to modify or inspect packets at different points of the path through the switch. Chains contain the individual rules to influence traffic. Each table and the default chains they support are shown below. Tables and chains in green are ...