The most commonly used seven Linux command:
cd: Change directory.
pwd: View current directory.
ls: view files in the directory.
touch: No files you create the file.
mkdir: create directory.
mr: remove deleted. -r can delete the directory
clear: clear the screen.
Files and directories for commonly used commands
View directory contents
ls
-a: View hidden files
-l: View details
-h: -l with the use of user-friendly displays the file size
ls wildcard
*: Represents any number of characters
?: Indicates any one character
[]: Represents any character can match a group
[Abc]: represents a ratio with a, b, c of any one of
[Af]: to match any character within a range of f
Change directory
cd
cd: switch the current user's home directory
cd ~: ditto
cd:. maintained in the current directory
cd ..: Switch to the parent directory
cd -: to switch between the last two working directory
Create and delete operations (when creating a dot (.) At the beginning of the file is a hidden file)
touch
If the file does not exist, you can create a blank file
If the file already exists, you can modify the last modification date of the file
mkdir
-p: create directories recursively
rm
Copy and move files:
tree (tree display)
-d: show only directory
cp [object address] [copied into the directory address]
-i: covered prompt before files
-r: If all the subdirectories and files directory files recursively copy directory
mv
May be used to move a file or directory, the file or directory may be renamed
View the file contents
cat
View the contents of the file, create a file, file merging, additional features such as file content
-b: display non-empty rows
-n: display all rows
more
Split-screen display file contents
grep
Search the contents of a text file
-n: display the line number
-v: Display all match line does not contain text (inverted)
-i: ignore case
Parameters: ^ a: first row, beginning with a line search
ke $: end of the line, end of line searches to ke
other:
echo
重定向>和>>
命令的执行结果 重定向多一个文件中
>:表示输出，会覆盖文件原有的Neri
>>:表示追加，会将内容追加到已有内容的末尾
管道 |
将一个命令的输入通过管道 作为 另一个命令的输入