program-timer.sh

#!/usr/bin/env bash

trap 'exit' ERR # exit on error (better than `set -e`)
set -x          # echo commands before running
set -u          # throw error if an unbound variable is called

BASEDIR=$(cd $(dirname $0) && pwd) # path to directory for itself
LOGDIR="$BASEDIR/times"            # directory for logging
LOGFILE="$LOGDIR/times.txt"        # file for logging (within $LOGDIR)

# create array from finding files in directory (except itself)
IFS=$'\n'
PROGRAMS=($(find $BASEDIR -maxdepth 1 -type f | grep -v "$(basename $0)"))

# create array from reading string
IFS=' '
read -a ITERATIONS <<< "1 5 10 50 100 500 1000 5000 10000 50000 100000"

mkdir -p $LOGDIR # create directory, but don't fail if it already exists
touch $LOGFILE   # create/truncate file

for p in "${PROGRAMS[@]}"; do
  for i in "${ITERATIONS[@]}"; do
    # append output of each program and iteration combination to $LOGFILE
    $p $i >> $LOGFILE
  done
done

echo "Finished! Times for each program can be found in $LOGFILE"