CODEWITHSUNDEEP
ruby-on-railsshell
Prativa
Prativa

Reputation: 13

How to read a user input in a text filed in ruby on rails and pass the value to a shell script command

I am very new to ruby on rails and I have a very simple question. I am able to read the user input from a text field in ruby on rails

@user = params[:user]

I have to pass this value as an argument to a shell script I tried a number of things, but nothing works

run_command "./file.sh #{@user}"

and

%x(./file.sh #{@user})

The script receives "{user="

Any help is appreciated!

Upvotes: 0

Views: 151

Answers (1)

pokrovskyy
pokrovskyy

Reputation: 487

First, make sure you escape any parameters you pass to command line. You may be easily attacked via command line injection this way. Try this instead:

system "/path/to/file.sh #{@user.shellescape}"

You may also want to try exec, depending on how you want to track output. Please see http://ruby-doc.org/core-2.3.0/Kernel.html for more details on both

Upvotes: 1

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