title: grep command not reading comamnd output for this adb command
body: <p>On executing the following adb command with grep I get the following response in (darwin os) terminal. i count number of error after grep finds a &quot;Error&quot; string in response</p>
  <pre><code>adb -s derefedv645xxxxxx shell &quot;am start -n com.samsung.networkui/.usa.EnhancedLteServices&quot; | grep Error | wc -l
  </code></pre>
  <p>Output:</p>
  <pre><code>Error type 3
  Error: Activity class {com.samsung.networkui/com.samsung.networkui.usa.EnhancedLteServices} does not exist.
         0
  </code></pre>
  <p>Meaning there is no &quot;Error&quot; text in the response. why grep is not able to capture the text &quot;Error&quot; ? let me know if more information is required.</p>