On branch introduce-mdls

Changes to be committed:
modified:   hash-files
	Add variables for bin paths to eventually switch based on
	detected OS.

hash-files

@@ -1,5 +1,7 @@
 #!/usr/bin/env bash
 log_file=/var/log/hash-files.log
+md5_bin=$(which md5sum)
+mktemp_bin=$(which mktemp)
 DateTimeStamp=$(date +\%D_\%T)
 
 set -a
@@ -39,7 +41,7 @@ hash_files () {
 #======================"
 	IFS=$'\n'
 	for file in ${list_of_files[@]}; do
-		hash=$(md5sum $file | awk '{ print $1 }')
+		hash=$($md5_bin $file | awk '{ print $1 }')
 		list_of_hashes+=( $hash )
 	done
 	write_log "Files hashed successfully."
@@ -59,7 +61,7 @@ create_csv () {
 write_data () {
 #echo "=== Write data to a .csv file. ===
 #===================================="
-	temp_csv_file=$(mktemp)
+	temp_csv_file=$($mktemp_bin)
 	printf '%s,%s\n' "File Path" "File Hash" >> $temp_csv_file
 	for line in ${csv_array[@]};do
 		printf '%s\n' $line