"An undefined value was used as if it were already defined."

[paperscissors]

Just trying this out for the first time on an Amazon Linux (more or less Centos 6) box. Got this output on the first shot:

Apache Buddy v 0.4

Gathering information...
We are checking the service running on port 80
The process listening on port 80 is /usr/sbin/httpd
The process running on port 80 is Apache/2.2.22 (Unix)
Apache has been running 0d 01h 29m 29s
The full path to the Apache config file is: /etc/httpd/conf/httpd.conf
Apache is using prefork model

Examining your Apache configuration...
Apache runs as site.com
Your max clients setting is 150

Analyzing memory use...
Your server has 7473 MB of memory
Use of uninitialized value $proc_mem_usages[0] in division (/) at
./apachebuddy.pl line 318 (#1)
(W uninitialized) An undefined value was used as if it were already
defined. It was interpreted as a "" or a 0, but maybe it was a mistake.
To suppress this warning assign a defined value to your variables.

To help you figure out what was undefined, perl will try to tell you the
name of the variable (if any) that was undefined. In some cases it cannot
do this, so it also tells you what operation you used the undefined value
in.  Note, however, that perl optimizes your program and the operation
displayed in the warning may not necessarily appear literally in your
program.  For example, "that $foo" is usually optimized into "that "
. $foo, and the warning will refer to the concatenation (.) operator,
even though there is no . in your program.

Use of uninitialized value $proc_mem_usages[0] in division (/) at
./apachebuddy.pl line 324 (#1)
Use of uninitialized value $count in division (/) at ./apachebuddy.pl line 338 (#1)

Illegal division by zero at ./apachebuddy.pl line 338 (#2)
(F) You tried to divide a number by 0. Either something was wrong in
your logic, or you need to put a conditional in to guard against
meaningless input.

Uncaught exception from user code:
Illegal division by zero at ./apachebuddy.pl line 338.
at ./apachebuddy.pl line 338
main::get_memory_usage('/usr/sbin/httpd', 'site.com', 'average') called at ./apachebuddy.pl line 1027

[cristiantx]

Did you manage to solve this?

[paperscissors]

I'm noticing it works on some of my linux boxes and not others, so there's some dependency that's not available on some machines, I guess?