Linux Learning Notes (ix)--command Learning (file and directory Viewing)

Linux files and directories View

Note: The following commands are from the network, if there are copyright infringement or other issues, please contact me to do the appropriate treatment, thank you very much ...

CD pwd ls cat tac more less Head tail command exercise:

Command	CD (Abbreviation for change directory)
Grammar	Transform Catalog
Extended	Relative path: is from. Or. The starting path. (. Represents the current directory: Represents the top level of the current directory) Absolute path: To have a complete path, from the directory you want to list to the directory (must be absolute path from/to).
Parameters	.  Represents this layer directory: Represents the previous level directory-represents the home directory where the current user identity is located but it is customary to return to the previous level of the directory directly (CD
Instance	To facilitate the practice of the above command, I first create a few folders, as follows: 650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M00/4B/F6/wKiom1Q2OZeAbhNOAADZs8FrnE8573.jpg "title=" 16.png "alt = "Wkiom1q2ozeabhnoaadzs8frne8573.jpg"/> 650) this.width=650; src= http://s3.51cto.com/wyfs02/M00/4B/F6 /wkiom1q2kdsrprd-aafiztht7zs058.jpg "title=" 12.png "alt=" wkiom1q2kdsrprd-aafiztht7zs058.jpg "/> 1, Absolute path vs. relative path: 650) this.width=650; "Src=" http://s3.51cto.com/wyfs02/M02/4B/F7/ Wkiol1q2k8ytctgfaadxhymkyca278.jpg "title=" 13.png "alt=" wkiol1q2k8ytctgfaadxhymkyca278.jpg "/> 2, .&: & ~-Use of  . 650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M01/4B/F7/wKioL1Q2LJTDPKhkAAFSPMREXkE026.jpg "title= "14.png" alt= "wkiol1q2ljtdpkhkaafspmrexke026.jpg"/>

Command	Pwd
Grammar	View your current directory
Extended	No
Parameters	-P (Note: This is the capital letter P) shows the detailed path Mail >> equivalent shortcuts to Windows Spool/mail >> is the absolute path of mail
Instance	The following mail file is a connection file, so if you add the parameter-p, it will be fully displayed (just like in Windows, right-click on the shortcut to see the exact path of the shortcut as the effect). 650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M01/4B/F1/wKioL1Q15hiCjQryAAHAiAt48Ps817.jpg "title=" 11.png "Width=" "height=" 197 "border=" 0 "hspace=" 0 "vspace=" 0 "style=" WIDTH:600PX;HEIGHT:197PX; "alt=" Wkiol1q15hicjqryaahaiat48ps817.jpg "/>

Command	LS (abbreviation for list)
Grammar	Display commands for files and directories
Extended	No
Parameters	-A: All files, together with hidden (files that begin with.), are listed (common)-A: All files, together with hidden, but not included. And.. The two directories-D: Lists only the directory itself, not the file data in the directory (frequently used)-F: Lists the results directly without sorting (LS defaults to sort by file name!) F: According to files, directories and other information, give additional data structure-H: List the file capacity;-I: Lists inode number-L: Long data string list, including file attributes and permissions and so on data; (common)-r: Reverse Output-r: Lists all files in this directory-S: Large file size Small sort, not sort by file name;-T: Sort by time, not by file name.
Instance	ls to view the files in the directory ls-f viewing files in a directory ls-l displaying details of files and directories 650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M02/4B/F8/wKioL1Q2NTmw4YMPAAJgqcySF2o079.jpg "title=" 15.png "alt=" Wkiol1q2ntmw4ympaajgqcysf2o079.jpg "/> Ls-a View all files (included. &, .... of hidden files) 650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M02/4B/F8/wKioL1Q2P6bQfcn9AAJPKqSobR8544.jpg "title=" 18.png "alt=" Wkiol1q2p6bqfcn9aajpkqsobr8544.jpg "/> Ls-h is shown in the form of habit 650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M00/4B/F8/wKioL1Q2QAvyLJrHAADL6QMl7OQ820.jpg "title=" 19.png "alt=" Wkiol1q2qavyljrhaadl6qml7oq820.jpg "/> Ls-r List all content in this directory 650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M00/4B/F7/wKiom1Q2P-iAUfPnAADZs8FrnE8655.jpg "title=" 16.png "alt=" Wkiom1q2p-iaufpnaadzs8frne8655.jpg "/>

Command	Cat (concatenate's abbreviation)
Grammar	View Documents
Extended	No
Parameters	-B Displays the ordinal (but not the blank line) before the row -N Displays the ordinal number before the row (blank lines are counted)
instance	No parameters displayed: 650) this.width=650; "Src=" http ://s3.51cto.com/wyfs02/m01/4b/f9/wkiol1q2re-tkixeaaftkbhnt_0528.jpg "title=" 20.png "alt=" Wkiol1q2re-tkixeaaftkbhnt_0528.jpg "/> -n display ordinal (blank line also counted) 650) this.width=650; "Src=" http://s3.51cto.com/wyfs02/M00/4B/F7/wKiom1Q2Rc3T_ 7e8aai-imerbrq726.jpg "title=" 21.png "alt=" wkiom1q2rc3t_7e8aai-imerbrq726.jpg "/>

Command	Tac
Grammar	Reverse display of document content
Extended	No
Parameters	No
Instance	650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M02/4B/F7/wKiom1Q2RwjARkLbAAJtcpqehoo163.jpg "title=" 22.png "alt=" Wkiom1q2rwjarklbaajtcpqehoo163.jpg "/>

Command	More
Grammar	Paging through the document (only looking at the page, not backwards)
Extended	Enter & Space (space) turn down one page Q Exit page
Parameters	No
Instance	650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M00/4B/F7/wKiom1Q2Sx_gRbZcAAM3bDLQ7bQ304.jpg "title=" 23.png "alt=" Wkiom1q2sx_grbzcaam3bdlq7bq304.jpg "/>

Command	Less
Grammar	As with the above, paging through the document
Extended	No
Parameters	Blank key: Flip one Page down; [PageDown]: flipping down one page; [PageUp]: Flip up one page; Q: Leave
Instance	650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M01/4B/F7/wKiom1Q2TMKjawgCAANlR_DKrM4291.jpg "title=" 24.png "alt=" Wkiom1q2tmkjawgcaanlr_dkrm4291.jpg "/>

Command	Head
Grammar	View documents (only a few lines)
Extended	No
Parameters	-N (followed by a number that indicates a few lines of content to display) Note: Blank lines are also considered a line
Instance	650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M01/4B/F9/wKioL1Q2UnCx80m2AAJDcesLjy8677.jpg "title=" 26.png "alt=" Wkiol1q2uncx80m2aajdcesljy8677.jpg "/>

Command	Tail
Grammar	View a document (see the end of a few lines)
Extended	No
Parameters	-N (n = number, indicating the next few lines to display) Note: As with the above, a blank line is counted as a row.
Instance	650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M00/4B/F9/wKioL1Q2UvWiaPkCAAItOjhICfw327.jpg "title=" 27.png "alt=" Wkiol1q2uvwiapkcaaitojhicfw327.jpg "/>

Finally sorted out ....

This article is from the "Last Bus" blog, so be sure to keep this source http://hznethome.blog.51cto.com/722914/1561858

Linux Learning Notes (ix)--command Learning (file and directory Viewing)