How to set folder size in linux (cent os, debian ,ubuntu )?

Question

linux

is there a program for this?

Answer 1

height and width? ;)
the size of the occupied space by the directory -
du -h dir
df -h dir
to limit - in general, nothing, you can get out - either mount a file system of the required size there, or allow writing to one user and set a quota on the partition for this user.

Answer 2

To determine the size of the folder, call your mother.
To see the size of a directory
du -skh /path/to/directory

Answer 3

ncdu
dh -h

Answer 4

Set a quota?