Script hangs on CentOS 7

Not much to see, it just never finishes, there is just one notice visible:

[root@localhost ~]# wget -q -O htf-common-issues.php "http://gitplace.net/pixcept/ispconfig-tools/raw/stable/htf-common-issues.php" && php -q htf-common-issues.php
PHP Notice:  Undefined variable: redhatrel in /root/htf-common-issues.php on line 179
^C