[root@id001 freepbx-2.8.0]# ./install_amp --username=asteriskuser --password=SDFSDFDSF
Checking for PEAR DB..OK
Checking for PEAR Console::Getopt..OK
Using username: asteriskuser
Using password: **********
Checking user..PHP Fatal error:  Call to undefined function posix_getpwuid() in /usr/src/freepbx-2.8.0/install_amp on line 728