Password card.

#!/bin/bash
# Filename: passcard.sh
# Version: 120212
# Author: robz
# Generates a random alpha-numeric text block for a password card.
# Just double click and run, the text block file will appear in the same 
# directory as the script.

DATEMARK=$(date +%d-%m-%y" @ "%H:%M:%S)
BLOCKLOC="$(dirname $0)/Passcard generated on $DATEMARK/Alphanumeric block.txt"

mkdir "$(dirname "$BLOCKLOC")"                      # Create a new directory.

for x in {1..8}; do                                 # Loop to create 8 lines.
    tr -cd [:alnum:] < /dev/urandom |\
    head -c 29 >> "$BLOCKLOC"                       # Write alpha-numeric line. 
    echo >> "$BLOCKLOC"                             # Move to next line.
done

echo -e "Generated $DATEMARK" >> "$BLOCKLOC"        # Date/time of generation.