Linux basic commands (all files)
Command format:
command [options] [parameters]
Note: Use spaces to separate commands, options, and parameters, most of which support only 256 characters.
Help
Man Handbook eg. Man Mans
Man command/Function name/header file
LS list content lists directory contents (WINDOWS:DR)
Ls-a Show all files (including hidden files, hidden files usually with '. ') Beginning
Ls-l Show file Details
Drwxrwxr-x 2 Tarena tarena 4096 April 11:10 Pre
--Ordinary files, storing data in a certain format (binary or text)
D: catalog file. B: Block device file, which provides buffer direction to the device. C: Character device file, without cache. P: Pipeline file, interprocess communication.
S:socket socket files, network communication between processes. L: Symbolic link file, pointing to another file (quite a shortcut under Windows).
Owner Genus GroupOther
Tarena Tarena Others
Rwx Rwx R-x
R:4 0100 Reads
W:2 0010 writes
X:1 0001 execution
Clear Clear Screen Ctrl + L (WINDOWS:CLS)
PWD Prints the current working directory
Switch directory for CD change directory
/: Root directory
./: Current directory
.. /: Previous level directory/parent Directory
~: The current user's home directory
1) Absolute path: The path to traverse from the root directory
2) Relative path: The path to traverse from the current directory
mkdir Creating a Folder
Touch create file, modify file last modified time
RM Delete File
Rm-r Deleting non-empty folders
RmDir Delete Empty folders
CP Copy Copy
CP file_name dir_name Copy files to the specified path
CP file_name Dir_name/newfile_name renamed or overwritten copy
Cp-r dir_name another_name Copy directory requires-R
Cp-all dir_name another_name Copy all content to the specified directory according to the original dependency
MV Move rename (rename)
MV File_name Dir_name
MV file_name Dir_name/newfile_name
MV file_name Newfile-name
chmod Modifying file permissions
CHMOD[U/G/O/A][+-=][R/W/X] FileName
=: Only one of the permissions is reserved, other deletions
Cat file_name Display file contents
Head file_name display the first 10 lines of file content
Head-n file_name See n rows
Tail file_name 10 lines after displaying the contents of the file
More file_name split screen display file contents
Blank: Flip One screen
Enter: Next line
History shows the commands that have been executed
!! Repeat the last command
!n repeating nth Row command
! First letter up search, last executed command
WC file Statistics
Statistics the number of bytes, characters, and lines of the file to be set up and displayed
WC [option] file_name
Wc-l file_name Display line number
Wc-w file_name Displays the number of characters in Word
wc-c file_name Display of bytes
; The end of a semicolon statement, typically used to link execution of multiple commands
| Pipe the output of the previous program or command as input to the next program or command
History | More
Users to see who is logged on to the system
Who logs on to the local system user details
Who am I displays information about the current user
WHOAMI display the name of the current user
Working status of PS detection process
-EShow All Processes
-F Show detailed process
-HDo not show title
ADisplays the programs running on the terminal
R To display a running process
X Show process without control terminal
U Show verbose format
Aux Show detailed information for all processes
Top
Kill PID ends the specified PID process
-9 Sigkill signal Force Kill program
redirect
> Truncate Write
>> Append write at end
File link
ln [options] source [dest]
ln [options] source [dest]
ln [options] Source...directory
Hard Links
ln [pathname]/[file name] [pathname]/hard-link name
Bash shortcut keys
CTRL + L Clear Screen
CTRL + a navigates to command start
CTRL + E navigates to the end of the command
CTRL + D exit, end command
CTRL + C Interrupt Program
CTRL + Z hangs the command you are executing
CTRL + SHIFT + C copy
CTRL + SHIFT + V paste
Linux basic commands
