7290 ZFS test suite needs to control what utilities it can run
Reviewed by: Dan Kimmel <dan.kimmel@delphix.com>
Reviewed by: Matthew Ahrens <mahrens@delphix.com>

@@ -8,11 +8,11 @@
 # source.  A copy of the CDDL is also available via the Internet at
 # http://www.illumos.org/license/CDDL.
 #
 
 #
-# Copyright (c) 2012 by Delphix. All rights reserved.
+# Copyright (c) 2012, 2016 by Delphix. All rights reserved.
 #
 
 #
 # Return 0 if the percentage difference between $a and $b is $percent or
 # greater. Return 1 if the percentage is lower or if we would divide by

@@ -28,16 +28,16 @@
         typeset a=$1
         typeset b=$1
         typeset percent=$3
 
         # Set $a or $b to $2 such that a >= b
-        [[ '1' = $($ECHO "if ($2 > $a) 1" | $BC) ]] && a=$2 || b=$2
+        [[ '1' = $(echo "if ($2 > $a) 1" | bc) ]] && a=$2 || b=$2
 
         # Prevent division by 0
         [[ $a =~ [1-9] ]] || return 1
 
-        typeset p=$($ECHO "scale=2; $b * 100 / $a" | $BC)
+        typeset p=$(echo "scale=2; $b * 100 / $a" | bc)
         log_note "Comparing $a and $b given $percent% (calculated: $p%)"
-        [[ '1' = $($ECHO "scale=2; if ($p >= $percent) 1" | $BC) ]] && return 0
+        [[ '1' = $(echo "scale=2; if ($p >= $percent) 1" | bc) ]] && return 0
 
         return 1
 }