Shorthand for POSIX `hexdump` standard output

hex

#!/usr/bin/env bash

##################################################
#                                                #
#  Shorthand for a hex dump of a file on POSIX   #
#     if the program exists on your system       #
#                                                #
##################################################

FILE=$1

usage() {
  echo "usage: hex <filename>"
}

if [[ $# -lt 1 ]]; then
  usage
else
  hexdump -C -n128 $FILE
fi