Using user input as parameter while running shell command in Ruby

Question

When i pass name = a.txt, then ls should take a.txt as input and provide correct output. This is not happening. Tried all possible combinations of quotes. I am a Ruby novice so plz excuse my naivety.

  puts "Enter name: "
  name = gets
  name.chomp!
  puts `ls  + name`

Peter · Accepted Answer · 2012-02-23 13:42:52Z

3

You should use

puts `ls #{name}`

The #{} form can be used to insert the result of a ruby expression inside a string.

answered Feb 23, 2012 at 13:42

Peter

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Paul Rubel · Accepted Answer · 2012-02-23 13:43:04Z

2

You need to tell the interpreter that name is a variable and that you don't just want the string "name", but rather the result of interpreting the value, which you do via #{VAR_NAME}.

puts `ls #{name}`

answered Feb 23, 2012 at 13:43

Paul Rubel

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