I tried to install webmin program to configure my samba. When I installed the webmin it gave me a warning that the hard disk size not enough. the warnings are as below:
warning: Expected size: 7602345
warning: Actual size: 3134663
1: webmin error unpacking of archive failed on file /usr/libexec/webmin/init/save_action.cgi;3f527951: cpio:read failed - Bad file descriptor

It looks like that there is not enough space for me to install the program but confusingly enough that when I check the hardisk using df -h, I still have 1.1G on my /dev/hda2 mounted on / and 37M on my /dev/hda1 mounted on /boot
Please help....Thanks

I think that means you have a bad download and that isn't the size it is supposed to be.

# How much free/used drive space
df -h

# Show disk usage by current directory and all subdirectories
du | less

# What takes up so much space on your box
# Run from the directory in question and the largest chunk shows up last
find $1 -type d | xargs du -sm | sort -g