How to store linux command output into a variable

问题:

Is it possible to store a linux command result in variable?

I am trying to store an encrypted value in a variable. To encrypt I am using base64 command. To store it in variable, I am using generate method. But I am not able to store a value.

$secretvalue    = generate("/bin/bash","-c","/usr/bin/echo ${password} | /usr/bin/base64")

回答1:

If you want to execute any command on Puppet Master server you can use inline_template function with ERB template inside and Ruby code for execute shell command:

$password = "12345"

$secretvalue = inline_template("<%= `/bin/echo ${password} | /usr/bin/base64` %>")

notify { "STDOUT: ${secretvalue}": }

P.S. If you just want to encode string to Base64 format you can import puppetlabs-stdlib module and use base64 function from it:

$secretvalue = base64('encode', $password)