วัน: 26 พฤษภาคม 2018

#!/bin/bash

# https://en.wikipedia.org/wiki/Software_versioning
# Function to compare versions
version_compare() {
 local IFS=.
 local version1=($1) version2=($2)
 
 # Compare major and minor versions only
 for ((i=0; i<2; i++)); do
  if [ "${version1[$i]:-0}" -gt "${version2[$i]:-0}" ]; then
   return 1
  elif [ "${version1[$i]:-0}" -lt "${version2[$i]:-0}" ]; then
   return 2
  fi
 done
 return 0
}

echo "Checking for updates..."

# Get list of outdated packages with versions
brew outdated --verbose | while read -r line; do
 if [[ $line =~ (.*)[[:space:]]([0-9]+\.[0-9]+\.[0-9]+).*[[:space:]]([0-9]+\.[0-9]+\.[0-9]+) ]]; then
  package="${BASH_REMATCH[1]}"
  current="${BASH_REMATCH[2]}"
  latest="${BASH_REMATCH[3]}"
  
  # Compare versions
  version_compare "$current" "$latest"
  result=$?
  
  if [ $result -eq 2 ]; then
   echo "Upgrading $package from $current to $latest"
   brew upgrade "$package"
  else
   echo "Skipping $package (no major/minor version change)"
  fi
 fi
done

echo "Update check complete!"