UNIX for Dummies Questions & Answers

Hi,
Iam new to UNIX...My requirement is to create 3 dir as an hierarchy under /var/opt/temip.The output should be /var/opt/temip/GP_Int/GPTTS/AUTO.
I have tried the following script...But only GP_int folder is getting created and not other folders...Can someone help???
#!/usr/bin/ksh
#script to create directory structure.
filename=/var/opt/temip
echo $filename
dirname=GP_Integration
echo $dirname

if [ -d $dirname ]
then
echo "directory exists already"
else
mkdir -p $(dirname $filename)
echo "directory GP_Integration created"

filename=/var/opt/temip/GP_Integration
echo $filename
dirname=GPTTS
echo $dirname
if [ -d $dirname ]
then
echo "directory exists already"
else
mkdir -p $(dirname $filename)
echo "directory GPTTS created"
fi

fi
Thanks...

First of all, just "mkdir -p /var/opt/temip/GP_Int/GPTTS/AUTO" should work. The -p switch will suppress errors if the dirs exist and create the parents.

Reply if you need more help. You confused me a bit with "filename" and "dirname" by using a directory as filename...