I have following piece of code in a test.rb file:
require 'open3'
cmd = 'C:\Program Files\foo\bar.exe'
Open3.popen3(cmd) do |stdin, stdout, stderr, wait_thr|
puts "stdout: #{stdout.read}"
puts "\n\n"
puts "stderr: #{stderr.read}"
end
bar.exe
C:\Program Files\foo\
foo.exe
"Hello world!"
foo.exe
foo.exe /blah
ruby test.rb
C:\RailsInstaller/Ruby2.2.0/lib/ruby/2.2.0/open3.rb:193:in 'spawn': No such file or directory - C:\Program Files\foo\bar.exe (Errno::ENOENT)
from C:\RailsInstaller/Ruby2.2.0/lib/ruby/2.2.0/open3.rb:193:in 'popen_run'
from C:\RailsInstaller/Ruby2.2.0/lib/ruby/2.2.0/open3.rb:193:in 'popen3'
from test.rb:3:in '<main>'
popen3
Open3.popen3(cmd, '')
Errno::ENOENT
"Hello World"
You are having trouble because "Program Files" is a folder with a space in it. Whenever that happens, you need to double quote it, just as you would on a cmd.exe prompt. And when you're double-quoting, you must remember that your backslash character "\" is an escape character, so you have to double-backslash to get the proper folder separators for Windows. I'm going to use code which actually returns something in my environment; adjust it to your taste. So your code should look like:
require 'open3'
cmd = "\"C:\\Program Files\\Git\\bin\\git.exe\""
Open3.popen3(cmd) do |stdin, stdout, stderr, wait_thr|
puts "stdout: #{stdout.read}"
puts "\n\n"
puts "stderr: #{stderr.read}"
end
If you have command line parameters to pass to git, you'd do it like this:
require 'open3'
cmd = "\"C:\\Program Files\\Git\\bin\\git.exe\" --version"
Open3.popen3(cmd) do |stdin, stdout, stderr, wait_thr|
puts "stdout: #{stdout.read}"
puts "\n\n"
puts "stderr: #{stderr.read}"
end