how to get the size of file in linux code example

Example 1: linux file size

cd dir ; du -hsx * | sort -rh | head -20 
# example output
# 300MB    some_backup_file.log
# 1.8GB    some_huge_file.war

Example 2: get the size of files in a directory linux

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