Creates N sample files of defined size

create-sample-files.sh

#! /bin/bash

die () {
    echo >&2 "$@"
    exit 1
}

[ "$#" -eq 2 ] || die "2 arguments required -- <file count> <size>, only $# provided!"
echo $1 | grep -E -q '^[0-9]+$' || die "Numeric argument required, $1 provided!"
echo $2 | grep -E -q '^[0-9]+M|K$' || die "Define the size as <number>M|K, $2 provided!"

arg_files_to_create=$1
arg_file_size=$2

echo "Creating $arg_files_to_create files of $arg_file_size"

for i in `seq $arg_files_to_create`; do
  truncate -s $arg_file_size trunc-file-$i.dat
done