Mytop works but gives error because of /proc/loadavg on 10.11.1

[davideradice]

Mytop gives this error:

readline() on closed filehandle L at /usr/local/Cellar/mytop/1.9.1_1/libexec/bin/mytop line 883.
Use of uninitialized value $l in scalar chomp at /usr/local/Cellar/mytop/1.9.1_1/libexec/bin/mytop line 885.
Use of uninitialized value $l in concatenation (.) or string at /usr/local/Cellar/mytop/1.9.1_1/libexec/bin/mytop line 916.

Here is /usr/local/Cellar/mytop/1.9.1_1/libexec/bin/mytop at lines 883-884:

    open L, "</proc/loadavg";
    my $l = <L>;

On my system

cat /proc/loadavg 

gives me this:

cat: /proc/loadavg: No such file or directory

My system:

Mac OS X
10.11.1

Mytop:

mytop: stable 1.9.1 (bottled)
Top-like query monitor for MySQL
http://www.mysqlfanboy.com/mytop-3/
Conflicts with: mariadb
/usr/local/Cellar/mytop/1.9.1_1 (21 files, 432K) *
  Poured from bottle
From: https://github.com/Homebrew/homebrew/blob/master/Library/Formula/mytop.rb
==> Dependencies
Required: openssl ✔

[DomT4]

/proc/loadavg

This is a Linux thing, so doesn't exist on OS X. Is the error you're experiencing fatal?

[davideradice]

No, it's not fatal. Anyway, is there a way for NOT showing errors in output?

Other errors, not platform specific, are shown:

Useless use of private variable in void context at /usr/local/Cellar/mytop/1.9.1_1/libexec/bin/mytop line 998.
"my" variable $data masks earlier declaration in same scope at /usr/local/Cellar/mytop/1.9.1_1/libexec/bin/mytop line 1032.
Argument "5.6.23" isn't numeric in sprintf at /usr/local/Cellar/mytop/1.9.1_1/libexec/bin/mytop line 286.

[DomT4]

No idea. Don't use the tool myself. Upstream hasn't been known to be active for a while now, but normally we'd suggest contacting upstream and asking them to fix up the syntax errors. If you know an alternative website/email where they can be reached that'd probably be the best course of action.

They seem to be harmless enough Perl syntax errors though. Debian looks to have patched them out of their mytop, so we could adopt that patch and see how many warnings it resolves.

[davideradice]

Thank you.

I've fixed adding

no warnings "all";

to /usr/local/Cellar/mytop/1.9.1_1/libexec/bin/mytop at line 24.