how to get file size of all the folder in linux code example

Example 1: get the size of files in a directory linux

# Displays all the files and sizes in MB or GB
du -h --max-depth=1

Example 2: find the size of file in linux

ls -l filename   #Displays Size of the specified file
ls -l *          #Displays Size of All the files in the current directory
ls -al *         #Displays Size of All the files including hidden files in the current directory
ls -al dir/      #Displays Size of All the files including hidden files in the 'dir' directory