This is not HTML; why are you using HTML tags?

Now my parameter file test.txt contain
$INSTALL_BASEPATH/uninstall.sh

and my test script contain following (test.sh)

The previous line is not code; why is it inside code tags?

dir=`cat test.txt|tr -d '\n'`

Why are you using cat? It's an unnecessary external command.

Code:

dir=$( tr -d '\n' < test.txt )

But, since there's only one line in the file, you don't need any external command:

Code:

read dir < test.txt

Why are you calling the variable dir when the file contains a filename, not a directory?

echo "dir============"$dir
mkdir -p resources

You should check that mkdir was successful.

Code:

if ! mkdir resources
then
  printf "could not create directory %s\n" "resources" >$2
  exit 1
fi

You should check it in the script.

Code:

if ! [ -e "$dir" ]
then
  printf "%s\n" "$dir does not exist" >&2
  exit 1
fi

[raorv@qcldb2 test]$ ./test.sh 
dir============$INSTALL_BASEPATH/uninstall.sh
cp: cannot stat `$INSTALL_BASEPATH/uninstall.sh': No such file or directory

In this script, your problem is that $dir will contain a literal '$INSTALL_BASEPATH/uninstall.sh'. The variable is not expanded.

Fix that with:

Code:

eval "dir=$dir"

You probably had the same problem in the original script, but you didn't tell us what was in the file, so we couldn't help you.