linux view file (folder) size

1. ls  -al displays the file or folder size in bytes;

    

2. byte b, kilobyte kb,

   1G=1024M=1024*1024KB=1024*1024*1024B

    

3. Usually the parameter h is added to visually display the size, and G, M, etc. are used to display large files

   ls  -alh

 

For example, to view the size of the home directory:
du -s / home
You can also:
du -sh / home