I,W commandThis command is used to display the users logged on to the system. W command is powerful. It not only shows who logged on to the system, but also shows the current work of these users, the statistical data is more detailed and scientific
ls [-ALIHD] file directory query the contents of the directory:-A: Show all files, including hidden files;-L: Show file details;-I: Display inode;-h: humanized display file size;-d: View Directory propertiesDirectory processing commandsmkdir [-MP]
Process-related conceptsfunction of kernel : Process management, file system, network function, memory management, driver, security function, etc.Process: A copy of a running program that is a collection of instructions that is loaded into
1 overviewLinux jobs have two ways, one is working in the foreground, the other is working in the backgroundFront-end operation: Through the terminal start, and after the start has occupied the terminal;Background jobs: Can be started through the
Shell Features--Linux has a variety of shells to use, the default for Bash,bash has the following key features.1. Command Memory AbilityPress the up and down keys on the command line to find a pre/Post input command. These commands are recorded in ~/
I. Process definitionProcess is the work that the CPU does not completeTwo 2.ps commandsPsA # #关于当前环境的所有进程X # #与当前环境无关的所有进程F # #显示进程从属关系E # #显示进程调用环境工具的详细信息L # #长列表显示进程的详细信息U # #显示进程的用户信息650) this.width=650; "Src=" https://s5.51cto.com/wyfs02/M01/8F/
I. Overview of the process1. Documentsfile: a marked storage space on a disk, essentially a stream of data, called a file nameThe file name can refer to this piece of datafile storage format :Binary format:Text Format (ASCII code):executable :
There is also a very useful feature in Bash's operating environment, which is the wildcard character (wildcard)! It's even easier for us to use bash to process data! Below we list some commonly used wildcard Fu Yi:
Symbol
Linux process and Job management (2)CentOS 6:http://172.16.0.1/fedora-epel/CentOS 7:http://172.16.0.1/fedora-epel/Process Management class Commands:Htop command:Options:-D #: Specify the delay interval;-U UserName: Displays only the process of the
Htop ToolsHtop is an enhanced version of the top tool that provides a more aesthetically pleasing interface to the administrator, supports interactive commands and supports mouse selection, and is included by Red Hat in the high-quality software
System and Management commandsUsers and Groups class commandsUsersDegree of importance: MediumDisplays all logged-on users. This command is basically consistent with the who-q.GroupsDegree of importance: MediumLists the current user and the group to
1) SIGHUPThis signal is issued at the end of the user terminal connection (normal or abnormal), usually at the end of the control process of the terminal to notify the same session of the various jobs, when they are no longer associated with the
LINUX Signal Concept DetailedWe run the following command to see a list of supported signals from Linux:# kill-l1) SIGHUP 2) SIGINT 3) Sigquit 4) SIGILL5) SIGTRAP 6) SIGABRT 7) Sigbus 8) SIGFPE9) SIGKILL (SIGUSR1) SIGSEGV) SIGUSR213) sigpipe)
Linux Process signal SIGHUP terminate process terminal line hang up SIGINT terminate process interrupt process Sigquit build core file terminate process and generate core file Sigill build core file non- Sigtrap Set up core file tracking
How to start the Linux daemonNanyiDate: February 28, 2016The daemon (daemon) is the process that is running in the background (daemon).This article describes how to start a Web app as a daemon.First, the origin of the problemAfter the Web
Process GroupA process group is a collection of one or more processes. Each process belongs to a process group in addition to a process ID. Each process group has a unique process group ID. Each process group can have a leader process. (Generally,
1. Foreground work and background work(1) ConceptForeground job: Start with terminal and Occupy terminal after startup. Background jobs: It is not related to the terminal at startup, or it is run in the background after the terminal is started (that
Xi. functionsThe shell function is defined by the description of the shell grammar above and holds a series of commands waiting to be executed later. When the shell function name is used as a simple command name, a series of commands associated with
The Pkill command kills the process according to the process name. Pkill and Killall application methods are similar, but also directly kill the running program, if you want to kill a single process, kill it.The Pkill command kills the process
you can see a list of supported signals from Linux:$ kill-l1) sighup 2) sigint 3) sigquit 4) Sigill 5) sigtrap 6) SIGABRT 7) sigbus 8) SIGFPE 9) sigkill sigusr1 ) sigsegv 12) SIGUSR213) (sigpipe
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