I already add the path in bashrc. and give ferret in terminal and output is:
bash: /usr/local/ferret/bin/ferret: No such file or directory.
$ ls -l /usr/local/ferret/bin/ferret$ ls -l /usr/local/ferret/bin/
/usr/local/ferret/bin/ferret: No such file or directory.
$ ls -l /usr/local/bin/ferret
. . . /usr/local/ferret/bin/ferret -> ferret_v7.2