CODEWITHSUNDEEP
ruby
TieDad
TieDad

Reputation: 9899

How can I get OS and OS ARCH information in Ruby?

In Ruby script, I want to get OS information, not only Linux, but also 32bit or 64bit.

That's because my program will run on multiple Linux platform. It calls a third part tool, the tool has sub-folder: lin32, lin64, I need to call proper version based on OS info.

Upvotes: 3

Views: 3991

Answers (4)

Alexander Shlenchack
Alexander Shlenchack

Reputation: 3869

In Ruby you can use RUBY_PLATFORM constant. This constant produces a base name of your OS and kernel bits level. E.g. in irb:

1.9.3-p392 :001 > RUBY_PLATFORM
=> "x86_64-linux" - Linux based OS with 64-bit
=> "i686-linux" - Linux based OS with 32-bit

Upvotes: 6

quetzalcoatl
quetzalcoatl

Reputation: 33536

Since you refer to linux, use uname -m as described here: How to determine whether a given Linux is 32 bit or 64 bit?

ignore the bottom "CPU" part. because you want to run a program, you want the kernel architecture:

irb:(main):001:0> `uname -m`
=> "x86_64"

x86_64 ==> 64-bit kernel
i686   ==> 32-bit kernel

Upvotes: 0

Arif
Arif

Reputation: 1399

You can use the RUBY_PLATFORM constant

irb(main):001:0> RUBY_PLATFORM
=> "i686-linux"

Upvotes: 0

Oleksandr Holubenko
Oleksandr Holubenko

Reputation: 4440

Also, you can try someth like:

ver = `getconf LONG_BIT`

or 

ver = `arch`

Upvotes: 2

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