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diff --git a/testkit/library/runner_functions.sh b/testkit/library/runner_functions.sh
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+#!/bin/bash
+
+# assorted useful ways of running executables.
+#
+# Author: Chris Koeritz
+
+##############
+
+# similar to timed_grid, but for arbitrary commands, and fits in with the timing
+# calculators.
+function timed_command()
+{
+  echo "[started timer $(readable_date_string)]"
+  $(\which time) -p -o "$TESTKIT_TIMING_FILE" $*
+  local retval=$?
+  echo "[stopped timer $(readable_date_string)]"
+  return $retval
+}
+
+##############
+
+# uses the timing file to determine how long the last activity took in
+# seconds and then prints out the value.
+calculateTimeTaken()
+{
+  head -n 1 $TESTKIT_TIMING_FILE | awk '{print $2}'
+}
+
+# calculates the bandwidth for a transfer.  this takes the elapsed time as
+# the first parameter and the size transferred as second parameter.
+calculateBandwidth()
+{
+  local real_time="$1"; shift
+  local size="$1"; shift
+  # drop down to kilobytes rather than bytes.
+  size=$(echo $size / 1024 | $(\which bc) -l)
+
+#echo "time=$real_time size=$size"
+
+  local total_sec="$(echo "$real_time" | awk -Fm '{print $1}'| awk -F. '{print $1}' )"
+  local bandwidth=""
+  if [[ "$total_sec" =~ .*exited.* ]]; then
+    echo "FAILURE: Test run failed in some way; setting total seconds to very large number."
+    total_sec="99999999"
+  fi
+  if [ $total_sec -eq 0 ]; then
+    # fake it when we get a math issue where something took less than a second.
+    total_sec=1
+  fi
+  bandwidth="$(echo "scale=3; $size / $total_sec" | $(\which bc) -l)"
+  echo "$bandwidth"
+}
+
+# a wrapper for calculateBandwidth that prints out a nicer form of the
+# bandwidth.  it requires the same parameters as calculateBandwidth.
+showBandwidth()
+{
+  echo "  Bandwidth $(calculateBandwidth $*) kbps"
+}
+
+##############
+
+# connects to a host as a particular user and executes a command there.
+function run_command_remotely()
+{
+  if [ $# -lt 3 ]; then
+    echo This function connects to a remote host to run a command.  It requires
+    echo at least three parameters: the host to connect to, the user name on
+    echo that host which supports passwordless logins, and the command to run.
+    echo The command to run is the third through Nth parameters.
+  fi
+  host="$1"; shift
+  username="$1"; shift
+  # run our expecter to feed commands in, and the last one needs to be exit so we
+  # return to the original host.
+  OUTFILE="$(mktemp $TMP/ssh_run.XXXXXX)"
+  expect $TESTKIT_ROOT/library/ssh_expecter.tcl "$username" "" "$host" "${@}" >"$OUTFILE"
+  reval=$?
+  # make sure we didn't experience a failure on the other side.
+  grep "YO_FAILURE" $OUTFILE &>/dev/null
+  if [ $? -eq 0 ]; then
+    echo Detected failure running command via ssh.
+    ((retval++))
+  fi
+
+#debugging
+echo ========== output from command ============
+cat "$OUTFILE"
+echo ===========================================
+
+  rm "$OUTFILE"
+  return $retval
+}
+
+#testing
+#run_command_remotely serene fred "ls /"
+
+##############
+