Basic operations on files and directories

Basic operations on files and directories under the Linux Command Line:

1. Create a file:

Touch file name --> the file name cannot contain spaces. To create a file name with spaces, the file name must be enclosed in double quotation marks.

Eg. Touch program file --> This command will create a connected file program and file.

Touch "program file" --> This command creates a file in program file. (It is not recommended to create a file name with spaces)

 

2. Create a directory:

Mkdir directory name --> create a directory, which is similar to the touch command and cannot be simpler.

When the mkdir ho/fk/test command is executed, if there is no FK directory or the ho directory, an error is returned. Parameters must be added at this time:

Mkdir-P ho/fk/test will recursively create sub-directories.

 

3. delete a directory or file

(Never experiment with the/etc directory .... Never beat me)

Rmdir directory name --> delete an empty directory (only empty directories can be deleted, and files or directories under the directory cannot be deleted.

Rm [-RF] directory or file name --> if you delete a file, you can directly Delete the RM file name. To delete a directory, you must add-R, for example, Rm-r/etc, to delete the directory. Otherwise, an error is returned.

So what is the use of f? If the directory you want to delete contains many directories and files, after the RM-R command is executed, ask every file or directory before it is deleted. Do you want to delete it? (Annoying). But if you add the parameter F to delete it directly, you will not be asked that much.

The RM-RF/etc command directly deletes the entire/etc directory. (For example, do not try this directory ...)

4. Copy and cut directories or files

CP [-RP] original file or directory target file or directory --> copy operation. r generally indicates that the operation is a directory in the parameter. Here, r also indicates that the operation object is a directory. The p parameter indicates the object and directory attributes [Creation Time, etc.] are retained.

Move [-RF] the target file or directory of the original file or directory --> cut operation. r indicates the operation directory, and F indicates the execution.

5. View File Information

In Linux, ls can be used to display the contents of directories and information of some files and directories;

Ls [-ALDH] [file or directory]

A --> display all files, including hidden files starting.

L --> displays detailed information about a file.

D --> view directory Properties

H --> Human, displayed in a way that humans can understand.

Ls-I file --> View the Object ID

PWD can view the current directory... (In other words, you often cannot find where you are .... Very depressing !!!!)

When I was writing this essay, I came to ask for a tutorial from instructor Podo .... So I am reading this tutorial from instructor Podo .. -_-''. Please do not despise me...

Basic operations on files and directories