Pass a dos variable to a ruby script from a dos batch file

Question

Possible Duplicate:
Pass variables to ruby script via command line

I am trying to pass the HOSTNAME as a parameter into a ruby script. Is this possible? This is what I believe should work, but it doesn't.

%h% = HOSTNAME
ECHO %h%

ruby this.rb %h%
pause

And the ruby code is

val = ARGV[0]

puts "Value is #{val}"

@MurifoX. If you don't put the % signs the ruby puts returns "Value is h" — Andrew, Aug 01 '12 at 12:50
@Andrew Ok, so what output do you get? And what if you do `ruby this.rb "something"` instead? Would the ruby script then print "Value is something"? — Eitan T, Aug 01 '12 at 13:00

score 0 · Accepted Answer · answered Aug 01 '12 at 13:01

0

You could set an environment variable in DOS and access it from your Ruby script. It would be something like:

set h = HOSTNAME
ECHO %h%

ruby this.rb
pause

Ruby code:

val = ENV["h"]

puts "Value is #{val}"

answered Aug 01 '12 at 13:01

Eric Levine

I was trying to avoid that. The actual script with the problem was : ruby replace_text.rb myfile.csv A_Computer_Name HOSTNAME – Andrew Aug 01 '12 at 13:09

1 Answers1