, login MySQL/ / .

, telnet/ssh. . 2 .
/ ssh/telnet. .

Secondly php cgi- , ( ) ssh/telnet .
ssh/telnet . cgi cgi. PHP, Apache Server. Apache Server , php .

ssh/telnet. login :

~/
ls.

, . john. :

ls - l ../john

, . () . , . . , .

, . listable / .

php/perl/ . ~/. / direcrtories . .

, . .