I've installed my PHP application on a remote server with Debian Linux and
plesk 7.5 reloaded, my assigned php-user is www-data (instead of the default "apache") and every command that I call with "exec" or "shell_exec" or "system" return the error code 127.
if I enter the shell as root I can do anything but
whenever I type "su - www-data" the return is "no shell"
So I don't know wether this is caused by some php configuration directives or OS user permissions settings.
who knows debian and plesk ? who knows this problem ?
my server administrators don't know how to resolve this issue.
help me !