paccy

#!/bin/bash
#
# PacNews
#
# pbrisbin 2009
#
###

message() {
  echo ""
  echo "pacnews is designed to streamline dealing with .pacnew files."
  echo ""
  echo "pacnews must be run as root, and will optionally accept a"
  echo "directory on which to act, otherwise /etc will be searched by"
  echo "default."
  echo ""
  echo "all *.pacnew files found will be presented to you one by one; "
  echo "you'll have the option of viewing/editing your current config"
  echo "file side by side with the pacnew file through vimdiff, then"
  echo "you can remove the pacnew file, replace you're existing"
  echo "config file with the .pacnew file, or do nothing."
  echo ""
  echo "answering anything other than \"y\" to the options will"
  echo "eventually bring you back without changing your system in any"
  echo "way."
  echo ""
  exit 1
}

errorout(){
  echo "==> ERROR: $1"
  exit 1
}

[ "$(whoami)" != "root" ] && errorout "You must be root"

which vimdiff >/dev/null 2>&1 || errorout "You need vimdiff installed"

if [ -z $1 ]; then
  DIR="/etc"
elif [ "$1" = "--help" ]; then
  message
else
  [ -d $1 ] || errorout "$1 is not a directory, try --help"
  DIR="$1"
fi

[ "$(find $DIR -name '*.pacnew')" = "" ] && {
  echo "No .pacnew files found."
  exit 0
}

for file in $(find $DIR -name '*.pacnew'); do
  current="$(echo $file | sed 's/\.pacnew//g')"
  echo -n ":: $file found, view differences? (Y/n) " && read A
  if [ "$A" = "y" ]; then
    vimdiff $current $file
    echo -n ":: Remove $file? (Y/n) " && read A
    if [ "$A" = "y" ]; then
      rm $file || errorout "could not remove the pacnew file"
      echo ">> $file was removed"
    else
      echo -n ":: Replace $current with $file? (Y/n) " && read A
      if [ "$A" = "y" ]; then
        cp $current $current.pacsave || errorout "could not back up existing config"
        echo ">> $current saved as $current.pacsave"
        mv $file $current || errorout "could not your config file"
        echo ">> $current replaced by $file"
      fi
    fi
  else
    echo ">> Skipping $file..."
  fi
done

exit 0