Desktops such as GNOME, KDE, LXDE, XFCE offer an easy way to determine the size of a file or directory, right-click on the file in question, select properties from the context menu, but for servers we don't get any desktop then we should use du command which calculates the space occupied by a file or directory
To get the size of a file / directory, type:
$ du -sh directorio
where:
- -s: displays the total for each argument
- -h: display the size of each file in a readable format (K, M, G)
In order to obtain the total size for each file that belongs to a directory, type:
$ du -csh directorio/*
-c: prints the total
Recommended reading
-man du