[BUGS] bug with postgresql

[mohamed hgug]

Hello,
After a successful installation of postgresql (7.0.3), when i want to start
using it, i have a problemes:
in the directory /usr/local/pgsql/bin i type ./psql , and i have this
result:
welcome to psql, the postgresql interactive terminal.
Type     \h for help ....
            \? ..........
            \g ......
            \q to quit
segmentation default.

but this commands (\h, \g, \? \g, \q) dont work ????????
please can you help me.
thank you a lot.