fix echo pathing for ubuntu

Author: MartyEwings

files/common.sh

@@ -7,16 +7,16 @@ fail() {
   # Print a stderr: entry if there were anything printed to stderr
   if [[ -s $_tmp ]]; then
     # Hack to try and output valid json by replacing newlines with spaces.
-    echo "{ \"status\": \"error\", \"message\": \"$1\", \"stderr\": \"$(tr '\n' ' ' <$_tmp)\" }"
+    $(/usr/bin/which echo) "{ \"status\": \"error\", \"message\": \"$1\", \"stderr\": \"$(tr '\n' ' ' <$_tmp)\" }"
   else
-    echo "{ \"status\": \"error\", \"message\": \"$1\" }"
+    $(/usr/bin/which echo) "{ \"status\": \"error\", \"message\": \"$1\" }"
   fi
 
   exit ${2:-1}
 }
 
 success() {
-  echo "$1"
+  $(/usr/bin/which echo) "$1"
   exit 0
 }