pipe file

1. Edit     x: Delete the character      #x at the cursor: Delete the # characters that begin at the beginning of the cursor      D: Delete command         dd: Delete the entire line at the cursor           #d: Delete the # line         2 the cursor

LS Common short optionsLS is an external command (external command: There is an executable file corresponding to the command name under a path under the file system)Short options-L #长格式650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M01/7E/3B/

1. Shutdown command:Halt;reboot;shutdown can use man shutdown to see its detailed explanationshutdown [option] TimeOption-h:halt-r:reboot-c:cancleTime:hh:mmNow+#2 users: Get credentials for a resource or serviceLinux path:/home/caseyLinux file types1

"View Folder Size"#/lib Directory size du-sh/lib#/lib subdirectory size du-sh/lib/* # View/lib directory normal file size Find/lib-type F | Xargs Ls-la | Awk-f ' begin{sum=0} {sum+=$5} end{printf "%d bytes\n", sum} '"Number of statistical files"#

File type: the-: Normal fileD: CatalogueC: Character devices, such as display keyboard and mouseB: Block device, disk, USB drive, etc.L: Soft Connection file, similar to the shortcut in win, only records the path of a fileS: Inter-process

Linux file LookupFindFile LookupLocateFile Lookup: Find eligible files on the file systemLocateRely on the pre-built Index library query system on the prebuilt file Index database/var/lib/mlocate/mlocate.db system automatic implementation, periodic

Find command: Used to look up files in the file tree and make the appropriate processing1, the format of the Find command;Find Pathname-options [-print-exec-ok ...] {}\2, the parameters of the Find command;The directory path that the Pathname:find

1. File typesList:lsLists, listsDirectories: Files, path mappingsPath: The location from the specified starting point to the destinationFileSystem: File SystemList files under the specified pathCatalog: Working directory,current

First, prefaceThe various modules of the operating system have been introduced before, and now we will learn more about process management in the operating system.Ii. Basic concepts of the processIn systems that do not have an OS configured, the

Pipeline Popen start shell command Call pipe file* popen (const char* command, const char* open_mode)//mode represents read or write. Pipe Pipe (int file_descriptor[2]) With the

The output and interpretation of LS ls -L: Long format -H: Do unit conversion -A: Displays hidden files that begin with. represents the current directory: represents the parent directory -A: Show hidden files but not

A basic knowledge of Linux1.1 ls Displays the current directory or file Ls-l view the details of the file Ls-ld view the directory details-rw-r--r--. 1 root root 969 2 months yum.confFirst field: file type; the types of files in Linux have the

I. Directory management commands (mkdir, rmdirThe types of Linux files are:-: ordinary file case; d: directory file; b: block device file; C: Character device file; l: Link file; s: Socket file; p: Pipe file.1. mkdir: Create directory (used for path

Basic Linux Knowledge1. Interface1) GUI: Graphical interface Interface gnome is a visual interface, a beginner is best to start with this interface, written in C language;2) CLI: Command line interface, when a Linux minimum installation is only this

Linux the philosophical Thought1 , all documents;Organize almost all resources, including hardware devices, into file formats;2 , consisting of numerous single-purpose small programs;A program to implement only one function, and to do a good job,

First, the operating system structure:First, the lowest layer is the hardware, on a single CPU system platform, the hardware resources are independent. In order to be able to run multiple software simultaneously on the same computer, so the common

Shell script Detailed definitionA "program" written using the shell's function, which is a plain text file, can write some shell syntax and commands (including external commands) in it, with regular expressions, pipe commands, and data flow

This article goes from http://bbs.chinaunix.net/thread-3668921-1-1.html, where I thank the author for sharingA Fill in the blanks questions:1. In a Linux system, access the device as a file.2. When booting from the Linux kernel, read the file system

Just contact Linux, is 0 basic learning, feel some things very interesting, some things more boring, so it is not studious. Just because you are not eager to learn, so you have to work hard, give life to hobbies to add a beautiful scenery.Through

PS: For its 10 days or so the Linux training is coming to an end, ahead of schedule, in order to better pass after the exam, read more exam questions and knowledge points in advance. This is a post that you see in the Chinaunix forum, posted to