6 Copy, move and file content commands

One 、 Copy and copy commands

1.tree command

• tree The command can list the file directory structure in a tree view
• Option parameters -d Show only directories

2. cp command

• cp The function of the command will be given file Or directory Copy to another Documents or Directory

• Options	meaning
  -i	Prompt before overriding the file
  -r	If the given source file is a directory file , be cp All directories and files under this directory will be copied recursively , The destination file must be a directory name ,

  Be careful ： Don't use it directly cp Command to copy a directory file , To copy a directory file, you must add -r, root rm The command is the same as deleting the directory file

3. mv command

• mv Commands can be used directly to move file Or catalogue , You can also rename files or directories

• Option parameters ： -i Prompt before overriding the file

Two 、 File content command

1. cat command

• cat The command can be used to view the contents of a file , create a file 、 File merge 、 Add file content and other functions

• cat All the content will be displayed at once 、 Suitable for viewing text files with less content

  Options	meaning
  -b	For non empty output line number
  -n	Number all lines of output

  Be careful ：Linux One more nl The order of and cat -b The effect is equivalent to

2. more command

• more The command can be used to display the contents of the file in separate screens , Only one page at a time

• It is applicable to text files with more contents

• Use more The operation key of ：

3. grep command

• Linux In the system grep Command is a powerful search tool

• grep Allow text files to be modified Pattern lookup , The so-called pattern search , Also known as regular expressions

  Options	meaning
  -n	Show matching lines and line numbers
  -v	Display does not contain matching text of all lines （ It's like asking for the opposite ）
  -i	Ignore case

• Two commonly used modes to find