is it possible to overwrite the exiting link
Without to get fail/error with standard output 1 ?
( like mkdir -p )
ls -ltr /hadoop
lrwxrwxrwx. 1 root root 12 Jun 25 12:51 /hadoop -> /data/hadoop
ln -s /data/hadoop /hadoop
ln: failed to create symbolic link ‘/hadoop/hadoop’: File exists
# echo $?
1
ln -sf /data/hadoop /hadoop
ln: ‘/hadoop/hadoop’: cannot overwrite directory
expected output
ln -s (extra flags?) /data/hadoop /hadoop
# echo $?
0