Function created to detect yum or apt-get package manager and report back

detect_yum_aptget.sh

#######################################
# Detects yum or apt-get
# Globals:
#   None
# Arguments:
#   None
# Returns:
#   Package Manager command
#######################################
packagemanager() {
  declare -A OS_INFO;
  OS_INFO[/etc/redhat-release]=yum
  OS_INFO[/etc/debian_version]=apt-get

  for OS in ${!OS_INFO[@]}
  do 
    if [[ -f $OS ]]; then
      printf ${OS_INFO[$OS]}
    fi
  done
}