Linux Learning Notes (10)--Command Learning (file creation)

Linux File Creation command

We often have to create some documents to add content or to create a file directory to organize the file collation, so we need to get familiar with the command created, the Linux file Creation command basically has the following:

mkdir rmdir touch rm CP Move command:

Note: Before we learn to use the Create command, the first thing to know is that the file naming requirements in Linux

1, the file name is similar to the length of windows, up to 256 characters (it is recommended to be as short as possible)

2, in addition to the \ symbol, everything else can be used as a file name, which is more than the width of Windows (we recommend that you do not use special characters to do file names)

3, the case is extremely sensitive.

4, avoid using-+ and so on as the first character of the file name, causing unnecessary trouble (such as. is to indicate hidden files)

Lab Environment: Create several folders and files first (same as previous chapter structure)

650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M01/4C/29/wKioL1Q3dHaQQgpvAADZIv5nfLY233.jpg "title=" Qq20141010134914.png "alt=" Wkiol1q3dhaqqgpvaadziv5nfly233.jpg "/>

Command	mkdir (make directory abbreviation for English)
Function	Create a Directory
Grammar	mkdir Directory Name
Extended	mkdir filename >> Creating a directory mkdir filename1 filename >> connection Create two directories in one place Mkdir-p filename/filename/filename >> Creating a tree Directory Mkdir-m file permissions filename >> can set arbitrary file permissions
Instance	1, mkdir Blog (create a folder named blog , the default permissions) 650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M01/4C/29/wKioL1Q3dkCjrAyrAALihzIEUew325.jpg "title=" 2.png " alt= "Wkiol1q3dkcjrayraalihzieuew325.jpg"/> 2. mkdir Hz NET Home (create Hz Net home three folders) 650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M02/4C/27/wKiom1Q3egyTirP4AAEh5FiN4V8933.jpg "title=" 3.png " alt= "Wkiom1q3egytirp4aaeh5fin4v8933.jpg"/> 3, Mkdir-p hznethome/hz/net/home (Create Tree folder, Hznethome contains Hz,hz contains home in net,net) 650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M00/4C/29/wKioL1Q3ezaBDsaEAAIsIPabE2A128.jpg "title=" 4.png " alt= "Wkiol1q3ezabdsaeaaisipabe2a128.jpg"/> 4. MKDIR-M 777 Test 650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M01/4C/28/wKiom1Q3e9nyz7UzAANb4AUYdq8091.jpg "title=" 5.png " alt= "Wkiom1q3e9nyz7uzaanb4auydq8091.jpg"/>

Command	RmDir (remove directory abbreviation)
Function	Delete a folder
Grammar	RmDir Directory name (note: blank)
extension	rmdir filename   >>> delete filename directory rmdir-p filename/filename/filename >>> Delete nested folders (empty) rmdir filenam filename filename    >>>> Delete several same-location folders
instance	1, rmdir Test (delete folder named Test) 650) this.width=650; "src=" http:/ S3.51cto.com/wyfs02/m01/4c/28/wkiom1q3gzeg_lsbaafilcjclpy156.jpg "title=" 6.png "alt=" Wkiom1q3gzeg_ Lsbaafilcjclpy156.jpg "/> 650) this.width=650; "Src=" http://s3.51cto.com/wyfs02/M02/4C/28/ Wkiom1q3gwfslw16aagifjflgy4949.jpg "title=" 7.png "alt=" wkiom1q3gwfslw16aagifjflgy4949.jpg "/> Span style= "font-size:20px;" >2, rmdir-p hznethome/hz/net/home (delete hznethome, Hz, NET, home several folders, but only if: these folders are empty) 650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M01/4C/29/wKiom1Q3ivOymAgVAAGQuVTKfhc840.jpg "title=" 8.png "alt=" wkiom1q3ivoymagvaagquvtkfhc840.jpg "/>

Command	Touch
Function	Create Document & Modify document display time
Grammar	Touch filename. suffix name
Extended	Touch filename touch filename filename filename >> Create several documents at the same time touch-d "date" filename >> updated document modification date Touch-t "Time" filename >> updated document modification time
Instance	1. Touch Test.txt (Test create Test.txt document) 650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M01/4C/2A/wKiom1Q3nITTor4ZAADOPqVX7vY707.jpg "title=" 9.png " alt= "Wkiom1q3nittor4zaadopqvx7vy707.jpg"/> 2. Touch Hz.txt net.txt home.jpg (create several documents at the same time) 650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M00/4C/2C/wKioL1Q3nRuTIN2JAAENnHdjAR4991.jpg "title=" 10.png "alt=" Wkiol1q3nrutin2jaaennhdjar4991.jpg "/> 3, tuocn-d "2 days Ago" Hz.txt (modified two day ago) 650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M00/4C/2A/wKiom1Q3ndrD0fx4AAGLNTJRb3k038.jpg "title=" 11.png "alt=" Wkiom1q3ndrd0fx4aaglntjrb3k038.jpg "/> Note: Two days ago the second to use Arabic numerals, English is not possible, such as: 650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M00/4C/2A/wKiom1Q3n2TAoR68AAG1Dw4YZwI966.jpg "title=" 12.png "alt=" Wkiom1q3n2taor68aag1dw4yzwi966.jpg "/> 4, touch-t "YYMMDDHHMM" Net.txt (Modified time) 650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M00/4C/2A/wKiom1Q3oMHx9UrBAAMrf9uljtA519.jpg "title=" 13.png "alt=" Wkiom1q3omhx9urbaamrf9uljta519.jpg "/>

Command	RM (remove abbreviation for English)
Function	Delete Directory
Grammar	RM Directory Name
Extended	rm-f filename >>f (force) Mandatory Delete, no hint (same as shift+delete in Windows Rm-i file >> Interactive Delete, will ask you if you really want to delete Rm-r file >> Recursive Delete, will be a series of direct deletion
Instance	1, rm-f hz.txt >> Direct Delete, do not need prompt 650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M00/4C/2A/wKiom1Q3pALQr-3wAAEHZ18xyr8828.jpg "title=" 14.png "alt=" Wkiom1q3palqr-3waaehz18xyr8828.jpg "/> 2. rm-i net.txt >> Delete net.txt files, but there will be hints 650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M02/4C/2A/wKiom1Q3pRugOjsLAAJVqB2fapE973.jpg "title=" 15.png "alt=" Wkiom1q3prugojslaajvqb2fape973.jpg "/> 3. RM filename filename filename To delete the listed file or document directly. 650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M02/4C/2B/wKiom1Q3pk3yitALAADhYPpAYe0017.jpg "title=" 16.png "alt=" Wkiom1q3pk3yitalaadhyppaye0017.jpg "/> 4, rm-r hznethome/hz/net/home >> Delete a bunch of files, and the folder contains other files. (as in the home above contains hz.txt documents) 650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M00/4C/2C/wKioL1Q3qxyBr5hSAAHm0J9VGDc475.jpg "title=" 17.png "alt=" Wkiol1q3qxybr5hsaahm0j9vgdc475.jpg "/>

Command	CP (copy in English abbreviation)
Function	Copy a directory or document
Grammar	CP [Options] [source file] [destination file]
Extended	-D: If the source file is the attribute of the link file, the link file property is copied instead of the file itself; -F: For force, if the target file already exists and cannot be opened, then try again after removing it; -I: If the target file (destination) is already present, it will be asked to make the action (common)-l: Create the link file of the hard link, rather than copying the file itself; -P: Copy the past along with the properties of the file, rather than using the default properties (backup is often used); -R: Recursive continuous replication, used for the replication behavior of the directory; (Common) -S: Copy becomes the symbolic link file (symbolic link), i.e. "shortcut" files; -U: Upgrade destination If destination is older than source! Finally, note that if the source file has more than two, then the last destination file must be "directory"!
Instance	650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M00/4C/2D/wKiom1Q331LA52RqAADiTvtg9o0232.jpg "title=" 18.png "Width=" 622 "height=" 221 "border=" 0 "hspace=" 0 "vspace=" 0 "style=" width:622px;height:221px; "alt=" Wkiom1q331la52rqaaditvtg9o0232.jpg "/> 1, CP hznethome.txt./hz >> Copy the Hznethome.txt file into the Hz folder 650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M01/4C/2E/wKioL1Q34FOBbQUQAAGpP-A7l-s334.jpg "title=" 19.png "Width=" 622 "height=" 147 "border=" 0 "hspace=" 0 "vspace=" 0 "style=" WIDTH:622PX;HEIGHT:147PX; "alt=" Wkiol1q34fobbquqaagpp-a7l-s334.jpg "/> Duplicate Cp-i hznethome.txt./hz (Note: It will be prompted to ask for your comments, whether to overwrite) 650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M02/4C/2D/wKiom1Q34KPjcmKyAAC76gMYqGE347.jpg "title=" 20.png "Width=" 622 "height=" "border=" 0 "hspace=" 0 "vspace=" 0 "style=" width:622px;height:43px; "alt=" Wkiom1q34kpjcmkyaac76gmyqge347.jpg "/> 2, CP hznethome.txt./net >> Copy hznethome.txt document to Net Folder (note the permissions inside) 650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M00/4C/2E/wKioL1Q34nWCFVGrAAR9V3_ZwD4130.jpg "title=" 21.png "Width=" 622 "height=" 253 "border=" 0 "hspace=" 0 "vspace=" 0 "style=" width:622px;height:253px; "alt=" Wkiol1q34nwcfvgraar9v3_zwd4130.jpg "/> 3, CP Hznethome.txt./hz CP Hznethome.txt./hz >>> Repeat the copy once, if there is any change will be copied, if none, it will be unchanged. 650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M00/4C/2D/wKiom1Q37WmBjOOPAAEWT27dbzU406.jpg "title=" 22.png "Width=" 622 "height=" "border=" 0 "hspace=" 0 "vspace=" 0 "style=" width:622px;height:83px; "alt=" Wkiom1q37wmbjoopaaewt27dbzu406.jpg "/> The above is not updated when the hint, below we write some text in the Hznethome.txt, and then to test the action just now. 650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M02/4C/2D/wKiom1Q37keDviyFAADuT42MIds218.jpg "title=" 23.png "Width=" 622 "height=" "border=" 0 "hspace=" 0 "vspace=" 0 "style=" width:622px;height:68px; "alt=" Wkiom1q37kedviyfaadut42mids218.jpg "/> There is no hint of what was said above. 4. cp-r./net./hz cp-r./net./hz >>> copy folders to use with parameter R combined. 650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M00/4C/2D/wKiom1Q38DqQUhnwAAMmxIYP_y0003.jpg "title=" 24.png "Width=" 622 "height=" 409 "border=" 0 "hspace=" 0 "vspace=" 0 "style=" WIDTH:622PX;HEIGHT:409PX; "alt=" Wkiom1q38dqquhnwaammxiyp_y0003.jpg "/>

Command	MV (move in English abbreviation)
Function	Move File & Change file name (rename)
Grammar	MV [options] [source file] [target file]
Extended	While copying the source file is still in, but moving (MV) session, the source file does not exist, this is consistent with Windows.
Instance	1, we first to test under the renamed, to change the name of Hznethome.txt Test.txt MV Hznethome.txt Test.txt 650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M02/4C/2F/wKioL1Q399WgwIF9AAGy9WclnxE513.jpg "title=" 26.png "Width=" 622 "height=" 119 "border=" 0 "hspace=" 0 "vspace=" 0 "style=" WIDTH:622PX;HEIGHT:119PX; "alt=" Wkiol1q399wgwif9aagy9wclnxe513.jpg "/> 2. Move the folder (to move the home folder to the Hz folder) MV Home Hz 650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M01/4C/2D/wKiom1Q3-SvgN11-AAKV8Jj-ths366.jpg "title=" 27.png "Width=" 622 "height=" 317 "border=" 0 "hspace=" 0 "vspace=" 0 "style=" WIDTH:622PX;HEIGHT:317PX; "alt=" Wkiom1q3-svgn11-aakv8jj-ths366.jpg "/> 3. When the target folder is present, move directly to the inside. 650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M00/4C/2F/wKioL1Q3-y6i4h1wAAGS330EtrA712.jpg "title=" 28.png "Width=" 622 "height=" 409 "border=" 0 "hspace=" 0 "vspace=" 0 "style=" WIDTH:622PX;HEIGHT:409PX; "alt=" Wkiol1q3-y6i4h1waags330etra712.jpg "/> 4, when the target folder is not present, the direct re-command operation. 650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M01/4C/2F/wKioL1Q3_BnxE2fNAAF9Eod4uQg885.jpg "title=" 29.png "Width=" 622 "height=" 327 "border=" 0 "hspace=" 0 "vspace=" 0 "style=" WIDTH:622PX;HEIGHT:327PX; "alt=" wkiol1q3_ Bnxe2fnaaf9eod4uqg885.jpg "/>

This article is from the "Last Bus" blog, so be sure to keep this source http://hznethome.blog.51cto.com/722914/1562367

Linux Learning Notes (10)--Command Learning (file creation)