How to view the type of file
ll see
Size view folder
size is not an ordinary ll see to the folder
if you want to really look at
the way the need to use statistics
View a directory of size (total size of the content of all files in the directory) and write query format
du -sh directory path
For example: du -sh / etc
Subconsciously b and c beginning of the file
Subconsciously s and b files
View file types
Summary comparison type, stat, and the file command
View command is essentially a type of view command
Magic mirror, true form
Look beyond the mirror
If the demon is to see what the demon snake demon, Fox Spirit, butterfly demon, the demon cat
View detailed attributes, height, weight, skill, etc.