I want know the real path of my hosting accout. (/home/public_html/account ?)
How to know it?

Okay it depends on what your domain name is. Lets say for example it's nogogiatu.vndv.com
this is what your path would look like:

/www/vndv.com/n/o/g/nogogiatu/htdocs/

or if your domain was online.zxq.net it would look like:

/www/zxq.net/o/n/l/online/htdocs/

Etc...