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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".

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

  • Will that link hidden files/folders? – Matthew Read Nov 6 '12 at 16:13
  • Hehe :-) Of course not, but the original attempt wouldn't do that either (so I didn't bother). – ce4 Nov 6 '12 at 16:50
  • still same problem.. i can use other apps like root explorer and link2sd to create soft links.. wonder how it is done.. – 2991ambusher Nov 6 '12 at 20:00
  • See my update, also read more on the ln command here. – ce4 Nov 6 '12 at 21:38
  • so.. what do u exactly want me to do?? – 2991ambusher Nov 7 '12 at 16:09
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I made it this way

cp -a /sdcard/olivetree /sdcard/sdcard-disk/olivetree
rm -rf /sdcard/olivetree
ln -sf /sdcard/sdcard-disk/olivetree /sdcard/olivetree 

But for wired reasons it didn't work or me in android 'Terminal Emulator' but smoothly worked from my PC via Putty and android 'SSH Droid'.

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