[root@vps3 /]# yum install postfix
Setting up Install Process
Resolving Dependencies
--> Running transaction check
---> Package postfix.i386 2:2.5.6-1.fc10 set to be updated
--> Finished Dependency Resolution

Dependencies Resolved

==============================================================================================================================
 Package                     Arch                     Version                               Repository                   Size
==============================================================================================================================
Installing:
 postfix                     i386                     2:2.5.6-1.fc10                        updates                     3.8 M

Transaction Summary
==============================================================================================================================
Install      1 Package(s)
Update       0 Package(s)
Remove       0 Package(s)

Total download size: 3.8 M
Is this ok [y/N]: y
Downloading Packages:


Error Downloading Packages:
  2:postfix-2.5.6-1.fc10.i386: Insufficient space in download directory /var/cache/yum/updates/packages
    * free   0
    * needed 3.8 M

[root@vps3 /]#

[root@vps3 /]# df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/simfs            7.1G  879M     0 100% /
none                 1008M  4.0K 1008M   1% /dev
[root@vps3 /]#

[root@vps3 /]# du -h --max-depth=1
4.0K    ./srv
20K     ./home
0       ./sys
4.0K    ./selinux
5.9M    ./bin
7.9M    ./etc
26M     ./root
48K     ./boot
6.5M    ./sbin
562M    ./usr
4.0K    ./opt
4.0K    ./dev
du: cannot access `./proc/5123/task/5123/fd/4': No such file or directory
du: cannot access `./proc/5123/fd/4': No such file or directory
0       ./proc
4.0K    ./media
4.0K    ./mnt
248M    ./var
2.2M    ./tmp
21M     ./lib
878M    .
[root@vps3 /]#