LINUX-14 Basic command-copy (CP) move (MV), delete (RM), copy file (DD)

1. CP command for copying files or directory format: cp[options] Source file destination file

　　There are three ways to replicate a directory:

@1, the target file is a directory, the source is copied to the directory;
　　@2, the target file is a file that overwrites the file with the source file;

@3, file file does not exist, the source file will be copied and modified to the name of the target file;

equivalent to-PDR (P,d,r for the above parameters) Td>

CP Command Parameters

parameter	function
-p	Preserve the original file's properties
-d	If the object is "Connection file", leave the "Connection file" property
-r	recursive continuous replication
-i	if the destination file exists, ask whether to overwrite
-a

For example: Create a file named Install.log

Touch  Intall.log

Copy Install.log to Xxx.log

CP  -ai xxx.log   111. Log

2, MV command for moving files or renaming format: mv[options] File name [destination file path] [target filename]

Rename file AAA to BBB

MV AAA BBB

3, rm command to delete files or directories, format: "rm[Options" File "

Delete normal files and prompt for confirmation: "RM file name"

Delete normal file or directory file, do not prompt: "RM-RF file or directory"

RM command

Parameters	Role
-F	Ignore warnings
-I.	Ask before deleting
-R	Delete a folder

4. DD command is used to specify the size of the copied file or to specify the converted file in the format: dd "parameter"

DD parameter

Parameters	Role
If	The file name entered
Of	The file name of the output
Bs	Set the size of each "block"
Count	Set the number of "blocks" to copy
Conv=ucase	Convert letters from small to uppercase
Conv=lcase	Convert letters from uppercase to lowercase

LINUX-14 Basic command-copy (CP) move (MV), delete (RM), copy file (DD)