linux study notes 1

Linux command 
of the three operating systems 
1.Windows 
2.Linux Ubuntu RedHat Centos ... 
3.Unix MacOS 

virtual machine software VMware Workstation 
installation teaching environment 
1. Install the virtual machine software VMware Workstation 
2. unpack Python teaching environment 2019xx 
3. Open the installation VMware virtual machine and select open 
4. locate the unzipped Python teaching environment of choice ubuntu64 bit 
5. run the 


terminal: run Linux command interface 

root / 

Linux command   
     command name [options] parameters 
1.pwd view the current path 
/ home / tarena 
root home tarena 

~ represents the user's home directory in the Linux path 

~ / home / tarena 

rest 14: 52 ~ 15: 05 

2.ls display the contents of the current directory which contains 
white papers on behalf of ordinary 
blue represents the directory / folder 
red for compressed files 
green represents executable 

ls -l display (long) long format 
 
shortcut Ctrl + l in the terminal cleared (the current row is moved to the top of the screen)
      Ctrl + plus terminal amplifying Font
      Ctrl + Minus narrow terminal font 

ls -a show all (all) that contains a hidden file or directory / folder 
in Linux file or directory is hidden. Beginning with 

no special emphasis on time regardless of the order of command options can be used simultaneously 
ls -la 
ls -al 
content under ls path view the path 

3.cd Change directory 
cd path 

path 
absolute path / path starting 
opposite path does not begin with / to make a starting point for a directory 

/ home / tarena current directory 
have a desktop in the current directory directory 
represented by the relative path table ./ 

current directory is a directory table on the desktop 
is represented by the relative path .. 

  . the current directory 
  .. indicates the parent directory of the current directory 

cd ../ Desktop 
practice to switch from the desktop and from the template to the desktop switch to the template 

switching to the directory / tmp 
view the current directory 
to view the current contents have 
to switch to the / etc directory view the current contents of the directory 
switch to the user's home directory 

Break 15: 48 ~ 16:05   

shortcut: 
   a terminal code completion the Tab 
cd ~ to switch to the user's home directory 
command corresponds ll ls -la
cd - returns to the last jump directory
cd default switch back to the user's home directory 

4.mkdir Create a directory / folder 
mkdir directory name 
mkdir Contents 1 Table of Contents 2 ... 

create three directories under aid1908 were called ABC 
cd aid1908 
mkdir ABC 

new directory a01 in aid1908 / A, the a01 in New A11 
mkdir -p a01 / A11 -p option to recursively create directories (create a directory with a hierarchical relationship) 

create a directory in my aid1908 
create a directory to learn programming objects in my catalog 
to see all the content in the directory I 
switched to the user's home directory 

5.touch (change a file's last modified date on the file does not exist if) create a file 
created in Linux files need to manually add a file type 

to create files in aid1908 / B b2.txt b3.txt in b1.txt 
Touch b1 .txt b2.txt b3.txt 


jobs 
created in aid1908 tiger lion monkey under three directories 
created in the directory lion Simba Nala directory 
is created in the directory file hello.py game.py Simba 
view the details of the file 
to switch to view the current directory mokey path 
switch to your home directory 

of the study notes