It's different accounts.
How would you expect safety from your account, if everyone had the permission to delete your home directory?
You do not have the
w permission to delete someone other's home directory by default, except if they
chmod +w it.
Here are the different permissions, and an example (
It goes like this:
1 + 2 + 4 = 7
1 + 4 = 5
0 = 0
, i.e. an ideal permission system. The owner (
in this case) can read, write and execute the file, the owner's group (
in this case) can read and execute, and anyone other (
in this case) cannot do anything. This is the legendary:
u: current user (User)
g: current user's groups (Groups)
o: not current user's groups (Others)
r: read permission (Read)
w: write permission (Write)
x: execute permission (X-ecute)