How to create a soft link between root partition and ext3 partition(on SD)

Question

I am trying to create symbolic links of /data/sdext2/app/* on /data/app.
This is what I did in adb shell
ln -sf /data/sdext2/app/* /data/app/
But it is telling "link failed No such file or directory".
Note that none of the partitions are of FAT32 format.
And without -f option it says "link failed File exists".

Answer 1

ln only takes 2 arguments at most (not counting options), the ../* wildcard however expands to all filenames in the folder. Just do place an echo before ln to see what happens.

Do it one by one this way:

cd /data/sdext2/app
for i in *; do ln -s /data/sdext2/app/"$i" /data/app/;done

or

for i in /data/sdext2/app/*; do ln -s "$i" /data/app/$(basename "$i");done

EDIT

Ok, this is how it works on my device:

me@workstation:~$ adb shell
shell@android:/ $ id
uid=2000(shell) gid=2000(shell) groups=1003(graphics),1004(input),1007(log),[...]
shell@android:/ $ su
shell@android:/ # id
uid=0(root) gid=0(root) groups=1003(graphics),1004(input),1007(log),[...]
shell@android:/ # cd /data/
shell@android:/data # ln -s /data/sdext2/app/banana.app /data/app/cucumber.app
shell@android:/data # ls -l /data/app/cucumber.app
lrwxrwxrwx root root 2012-11-06 22:30 /data/app/cucumber.app -> /data/sdext2/app/banana.app