Linux command: du

du

Parameter	Description
-a	Gives also file information not only folders
-c	Gives also the total
-h	Gives legible information (K, M, G...) instead of disk sectores
-s	Total only

Examples:

du -shc info2bach*
du -sh /*
du -sch .[!.]* * |sort -h  # Show folders & files size at current folder