brew update Fails With Ruby Error

[NotoriousWebmaster]

OSX 10.11.2

I'm getting this error:

Bender:local alfred$ brew update /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:55:in require': cannot load such file -- mach (LoadError)
from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:55:in require' from /usr/local/Library/Homebrew/extend/pathname.rb:2:in <top (required)>'
from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:55:in require' from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:55:in require'
from /usr/local/Library/Homebrew/global.rb:3:in <top (required)>' from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:55:in require'
from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:55:in require' from /usr/local/Library/brew.rb:15:in

'
Bender:local alfred$`

I imagine I need to update my Ruby or XCode?

Thanks for your help.

[MikeMcQuaid]

cd "$(brew --repo)" && git fetch && git reset --hard origin/master && brew update should fix this for you.

[NotoriousWebmaster]

Thx for the quick response @MikeMcQuaid ; sadly it still generates errors, though slightly different:

Bender:local alfred$ cd "$(brew --repo)" && git fetch && git reset --hard origin/master && brew update /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:55:inrequire': cannot load such file -- mach (LoadError)
from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:55:in require' from /usr/local/Library/Homebrew/extend/pathname.rb:2:in<top (required)>'
from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:55:in require' from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:55:inrequire'
from /usr/local/Library/Homebrew/global.rb:3:in <top (required)>' from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:55:inrequire'
from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:55:in require' from /usr/local/Library/brew.rb:15:in

'
warning: unable to unlink .yardopts: Permission denied
warning: unable to unlink CONTRIBUTING.md: Permission denied
warning: unable to unlink SUPPORTERS.md: Permission denied
fatal: cannot create directory at '.github': Permission denied
Bender:local alfred$`

[MikeMcQuaid]

Ok: cd /usr/local && git fetch && git reset --hard origin/master && brew update

[NotoriousWebmaster]

OK, here's what I got:

Bender:local alfred$ cd /usr/local && git fetch && git reset --hard origin/master && brew update
warning: unable to unlink .yardopts: Permission denied
warning: unable to unlink CONTRIBUTING.md: Permission denied
warning: unable to unlink SUPPORTERS.md: Permission denied
fatal: cannot create directory at '.github': Permission denied
Bender:local alfred$ ls -al
total 104
drwxrwxr-x@  25 root    wheel    850 15 Nov 10:09 .
drwxr-xr-x@  12 root    wheel    408 15 Oct  2015 ..
drwxrwxr-x   13 gadmin  admin    442 15 Nov 11:09 .git
-rw-r--r--    1 root    wheel    301 15 Nov 10:07 .gitignore
-rw-r--r--    1 root    wheel    261 15 Nov 10:08 .yardopts
-rw-r--r--    1 root    wheel   3160 15 Nov 10:09 CODEOFCONDUCT.md
-rw-r--r--    1 root    wheel   1103 15 Nov 10:09 CONTRIBUTING.md
drwxrwxr-x   12 gadmin  admin    408 14 Nov 18:03 Cellar
-rw-r--r--    1 root    wheel   1241 15 Nov 10:09 LICENSE.txt
drwxrwxr-x    7 gadmin  admin    238 15 Nov 10:09 Library
-rw-r--r--    1 root    wheel   2064 15 Nov 10:09 README.md
-rw-r--r--    1 root    wheel  23781 15 Nov 10:09 SUPPORTERS.md
drwxrwxr-x  116 gadmin  admin   3944  8 Nov 16:09 bin
drwxrwxr-x    6 gadmin  admin    204  7 Nov 16:16 etc
drwxrwxr-x    8 gadmin  admin    272 31 Oct  2014 git
lrwxr-xr-x    1 alfred  admin    127 22 Apr  2012 google_appengine -> /Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine
drwxrwxr-x    9 gadmin  admin    306 22 May 10:54 hidden
drwxrwxr-x    7 gadmin  admin    238 16 Oct  2015 include
drwxrwxr-x   26 gadmin  admin    884 16 Oct  2015 lib
drwxrwxr-x    5 gadmin  admin    170 31 Oct  2014 libexec
drwxrwxr-x    4 gadmin  admin    136 31 Oct  2014 man
drwxrwxr-x    3 root    wheel    102  4 Jun 00:41 n
drwxrwxr-x   12 gadmin  admin    408  7 Nov 16:16 opt
drwxrwxr-x   18 gadmin  admin    612  5 Nov  2015 share
drwxrwxr-x    5 alfred  admin    170  7 Nov 16:15 var
Bender:local alfred$

Can I chown the files in this directory to alfred:admin?

[MikeMcQuaid]

@NotoriousWebmaster Yeh, sudo chown -R alfred:admin /usr/local. You'll be able to back off some of that later.

[NotoriousWebmaster]

Thanks @MikeMcQuaid!!! That worked.

When I did a second update I got these Unknown option messages, is this normal?

Bender:local alfred$ brew update
Unknown option: n
Unknown option: 1
Usage: head [-options] <url>...
    -m <method>   use method for the request (default is 'HEAD')
    -f            make request even if head believes method is illegal
    -b <base>     Use the specified URL as base
    -t <timeout>  Set timeout value
    -i <time>     Set the If-Modified-Since header on the request
    -c <conttype> use this content-type for POST, PUT, CHECKIN
    -a            Use text mode for content I/O
    -p <proxyurl> use this as a proxy
    -P            don't load proxy settings from environment
    -H <header>   send this HTTP header (you can specify several)

    -u            Display method and URL before any response
    -U            Display request headers (implies -u)
    -s            Display response status code
    -S            Display response status chain
    -e            Display response headers
    -d            Do not display content
    -o <format>   Process HTML content in various ways

    -v            Show program version
    -h            Print this message

    -x            Extra debugging output
Already up-to-date.
Bender:local alfred$

[MikeMcQuaid]

@NotoriousWebmaster Sounds like you have a head in your $PATH that's not the system version.

[NotoriousWebmaster]

Not sure how to address this. Here's my PATH:

Bender:mongodb alfred$ echo $PATH
/usr/local/bin:/opt/local/bin:/opt/local/sbin:/Users/alfred/.npm/bin:/Users/alfred/bin:/Applications/XAMPP/xamppfiles/bin:/Library/Frameworks/Python.framework/Versions/3.1/bin:/Users/alfred/Library/Android/sdk/platform-tools:/usr/bin:/bin:/usr/sbin:/sbin:
Bender:mongodb alfred$

[MikeMcQuaid]

which head should return /usr/bin/head.

[NotoriousWebmaster]

I can move XAMPP to the end of the PATH. Would that help?

Bender:mongodb alfred$ which head
/Applications/XAMPP/xamppfiles/bin/head
Bender:mongodb alfred$ ls -al /Applications/XAMPP/xamppfiles/bin/head
-r-xr-xr-x  1 root  wheel  14725 17 Nov  2014 /Applications/XAMPP/xamppfiles/bin/head
Bender:mongodb alfred$

[MikeMcQuaid]

Yep.

[NotoriousWebmaster]

Beautiful! That fixed it. Thanks.

[JohnBartlett]

Excellent work Mike!

FYI, this fixed my issues in OSX 10.12.5 also...

Thanks again,
John

[straube]

Based on the comments above, these steps – and in the following order – worked for me:

$ sudo chown -R $(whoami):admin /usr/local
$ cd /usr/local && git fetch && git reset --hard origin/master && brew update