BigFix auto installer for macOS, written in Bash.

fixer.sh

#!/usr/bin/env bash
#
# fixer
#
# Download, unzip, and install BigFix in macOS.
# A device's unique identifier in the BigFix console is its serial number.
# 'Computer name' is set to serial number in this script.
#
# Author: M. Krinitz <mjk235 [at] nyu [dot] edu>
# Date: 2024-10-10
# License: MIT

#########
# Globals
#########

# URL of server hosting installer.
URL="http://"

# Zip file.
FILE="fixer.zip"

# Components of .zip package.
BIGFIX_COMPONENT=(
ActionSite.afxm
BESAgent-11.0.3.82-BigFix_MacOS11.0.pkg
clientsettings.cfg
)

########
# Fixer.
########

# Is current UID 0? If not, exit.
root_check() {
  if [ "$EUID" -ne "0" ] ; then
    printf "%s\n" "Error: root privileges are required to continue."\
      "Try: sudo bash fixer.sh instead." >&2
    exit 1
fi
}

# Get serial number.
get_serial_number() {
  serialnum=$(system_profiler SPHardwareDataType | awk '/Serial/ {print $4}')
}

########################
# A note about `scutil`.
# macOS uses `scutil` to manage system configuration parameters (e.g. computer name).
# A device's name is set via scutil arguments (ComputerName, HostName, and LocalHostName).
# For reference: https://ss64.com/mac/scutil.html
########################

# Get computer name.
get_computer_name() {
  computername=$(scutil --get ComputerName)
}

# Set "computer name" to serial number via `scutil`.
set_computer_name() {
  if [ "$serialnum" != "$computername" ]; then
    printf "%s\n" "Setting 'Computer Name'..."
    scutil --set ComputerName "$serialnum"
    scutil --set HostName "$serialnum"
    scutil --set LocalHostName "$serialnum"
  fi
}

# Retrieve .zip and place in /Applications.
retrieve_zip() {
  printf "%s\n" "Retrieving .zip file..."
  curl --progress-bar --retry 3 --retry-delay 5 "$URL/$FILE" --output /Applications/"$FILE"
  if [ $? -ne 0 ]; then
    printf "%s\n" "Error: Downloading $FILE failed." >&2
    exit 1
  fi
}

# Unzip .zip to /Applications.
unzip_zip() {
  printf "%s\n" "Unpacking .zip file to /Applications..."
  unzip /Applications/"$FILE" -d /Applications
  if [ $? -ne 0 ]; then
    printf "%s\n" "Error: Unzipping $FILE failed." >&2
    exit 1
  fi
}

# Run .pkg.
install_pkg() {
  printf "%s\n" "Installing .pkg..."
  installer -verbose -pkg /Applications/"${BIGFIX_COMPONENT[1]}" -target /
}

# Post-install cleanup (.zip and config files)
remove_trash() {
  printf "%s\n" "Cleaning crew, coming through..."
  rm -rv /Applications/"$FILE"
  rm -rv /Applications/"${BIGFIX_COMPONENT[1]}"
  rm -rv /Applications/"${BIGFIX_COMPONENT[2]}"
}

# Main.
main() {
  root_check
  get_serial_number
  get_computer_name
  set_computer_name
  retrieve_zip
  unzip_zip
  install_pkg
  remove_trash
}

main "$@"
retVal=$?

if [[ $retVal -ne 0 ]]; then
  printf "%s\n" "Something went wrong, homie..."
else
  printf "%s\n" "Done."
fi
exit $retVal