linux directory structure:
Only a linux directory.
usr: equivalent to ProgramFiles;
etc: storage system configuration
root: Administrator (super user) directory,
home: storage of other user's directory;
lib: Shared packet;
boot: system startup file:
tmp: Temporary files
Basic Commands
pwd: Print the current directory:
cd /: root directory;
ll: view the contents of the current directory;
ls (list) Function: to list contents;
Disk management commands:
. :Current directory
.. :Parent directory
ls:
-a（-all）
: So the file directory, including hidden special directory Beginning with the point of hidden files
-l: a detailed list of formats
-t: Change the time and Sorting files and directories
-r: reverse sequencing
--help: Online Help
list: list
ll: lists the files in the current directory
ls -al: lists the files in the current directory, including hidden files special directory
ll / bin /: lists the files in the bin directory
cd command:
cd ~: Current user directory
cd /: root directory
cd -: last visited directory
cd ..: parent directory
cd: The current default user directory
<Touch 1.txt> Create a txt file
Clear screen mkdir (create directory) ':
-p: parent directory does not exist to generate the parent directory
-v: displays detailed information during command execution
View the contents of the file command
cat command:
cat: show the file contents
(For file contents less)
more command:
Page display file contents:
Syntax more (file name)
enter: n rows down, needs to be defined, the default is a line
Spacebar: scroll down a screen or ctrl + f
b: Returns to the previous screen or ctrl + b
q: Quit more
less：
-m: The percentage is similar to the more command
-n: display the line number
operating:
tall order;
For displaying the contents of the file at the end, when the file is not specified, the processing as input information, used to view the log file.
Format: tall necessary parameters [] [] [file] parameter selection
tail -n <line number> shows the number of rows
-f read cycle
