#!/bin/bash
USUARIO=$1
TITULOS=( "Nombre" "Contraseña" "UID" "GID" "Comentario" "Directorio Home" "Shell" )

# if [[ -z $USUARIO ]]; then
#   echo "Usage: ./script1.sh root"
#   exit
# fi
#

getUserInfo() {
  USER=$1
  IFS=':'
  COUNT=0
  for v in $USER; do
    echo "${TITULOS[$COUNT]}: $v"
    let COUNT++
  done
}

main() {
  while read -r v; do
    # I hate this
    getUserInfo "$v"
    echo "--------------------"
  done</etc/passwd
}

main