`rake` fails: Exec format error

ruby-talk
1

I'm trying to start rake running for a sub-component of our system.
However Ruby doesn't like `rake` and produces the following error...

ruby -e "`rake`" (it gives the same error inside my .rb files)

-e:1:in ``': Exec format error - rake (Errno::ENOEXEC)

I worked around it by creating a .rb file that contains:
Rake::Task['taskname'].invoke

Is there a better way or a standard practice for invoking an external
Rake process from inside Ruby?

Thanks,
Larry

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2

A more complete version of what I'm doing is...

    crntDir = Dir.pwd
    Dir.chdir("other_directory_path")
    %x{ruby -e "require 'Rakefile'; Rake::Task['some_task'].invoke "}
    Dir.chdir(crntDir)

Is there a more elegant ruby-ism that accomplishes this?

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3

Hi,

At Fri, 10 Aug 2007 08:37:15 +0900,
Larry Fast wrote in [ruby-talk:264040]:

I'm trying to start rake running for a sub-component of our system.
However Ruby doesn't like `rake` and produces the following error...

> ruby -e "`rake`" (it gives the same error inside my .rb files)

-e:1:in ``': Exec format error - rake (Errno::ENOEXEC)

It depends on what's your platform and how you've installed
rake.

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Nobu Nakada

4

Alle venerdì 10 agosto 2007, Larry Fast ha scritto:

A more complete version of what I'm doing is...

    crntDir = Dir.pwd
    Dir.chdir("other_directory_path")
    %x{ruby -e "require 'Rakefile'; Rake::Task['some_task'].invoke "}
    Dir.chdir(crntDir)

Is there a more elegant ruby-ism that accomplishes this?

If you want to execute a rakefile, I think you can do:

%x{rake ...}

Stefano

5

If you want to execute a rakefile, I think you can do:
%x{rake ...}

ruby -e '%x{rake}' produces the same error message

Nobuyoshi Nakada wrote:

It depends on what's your platform and how you've installed
rake.

We're running Windows XP. ruby -v says:
ruby 1.8.5 (2006-12-25 patchlevel 12) [i386-mswin32]
I don't know much more than that. I'm guessing we used the one-click
installation.

Larry

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6

Larry Fast wrote:

I'm guessing we used the one-click installation.

There are 3 rake files in my ruby installation directory:
rake - near the top it reads # This file was generated by RubyGems.
rake.bat - very similar to rake
rake.cmd - one line: @ruby "C:/ruby/bin/rake" %*

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7

Hi,

At Sat, 11 Aug 2007 00:28:16 +0900,
Larry Fast wrote in [ruby-talk:264105]:

There are 3 rake files in my ruby installation directory:
rake - near the top it reads # This file was generated by RubyGems.
rake.bat - very similar to rake
rake.cmd - one line: @ruby "C:/ruby/bin/rake" %*

`rake.cmd` would work.

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Nobu Nakada

8

Nobuyoshi Nakada wrote:

`rake.cmd` would work.

Just tried it and yes, `rake.cmd` works.
Thank you,
Larry

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