In just installed mysql 3.23.58 on my debian system. and copied my.conf to /etc/mysql/
I tried to start the the database by
mysqld  --user=mysql&
and it works just fine
 
but as I tried to start it by
./bin/safe_mysqld --user=mysql&                 or     ./support-files/mysql.server start
there is only one line of response:  starting mysqld daemon with database from /usr/local/mysql/data
and then when I typed in "mysql"
I got "Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock'"

I found the sock file is in /tmp/mysqld.sock instead of the path in my.conf "var/run/mysqld/mysqld.sock'"

so I changed all the socket path in  the configuration file to let it poin to /tmp/mysql.sock,

but again there is error message "Can't connect to local MySQL server through socket '/tmp/mysqld.sock'"

now I totally have no idea why

would anybody throw me some light?

Thanks!!