Backup

#!/bin/bash
#Backs up all non-hidden folders and files in the current directory
#Accepts additional files and folters to compress as arguments


ITEMS="*";
FOLDER=".";
WORKING_DIRECTORY="$PWD"
EXCLUDE=false
INCLUDE=false
CHECK=false

until [ -z "$1" ]
do
  case "$1" in 
    "-f")
       if [ -z "$2" ]; then
         echo "Please enter a folder location"
       else
         FOLDER="$2"
         shift
       fi
     ;;
    "-I")
      INCLUDE=true
      EXCLUDE=false
      shift
      continue
    ;;
    "-E")
      EXCLUDE=true
      INCLUDE=false
      shift
      continue
    ;;
    "-C")
      CHECK=true
      shift
      continue
    ;;
    *)
      if $INCLUDE; then
        ITEMS="$ITEMS $1"
      elif $EXCLUDE; then
        echo "Removing $1"
        ITEMS="$( echo $ITEMS | sed "s/$1//g" )"
      fi
      shift
    ;;
  esac
done 

echo $ITEMS
#Makes directory if it doesnt exist
if [[ "$FOLDER" &&  ! -d "$FOLDER" ]]; then
	mkdir $FOLDER
fi

cd $FOLDER 
FILE_NAME="BACKUP_FILE"

#Tests if that file exist already
if [ -f "$FILE_NAME" ]; then
  echo "File already exists.\nOveride (Y/N)"
  read -t 10 -n 1 options
  case "$options" in
    "N")
      echo "New file name:"
      read FILE_NAME
    ;;
    *)
    ;;
  esac
fi


cd $WORKING_DIRECTORY


echo $PWD
#Checks if the user has permission for all the files he 
#is trying to back up 
if $CHECK && [ "$(id -u)" != "0" ]; then 
  echo "Checking"
  FILE_USERS="$( ls -lR | awk '{print $3}' )" 
  ALL_USERS="$( cat /etc/passwd | awk -F: '{print $1}' )"
  for usr in $FILE_USERS
  do
    if [ usr != "$USER" ]; then
      for x in $ALL_USERS
      do 
        if [ x = usr ]; then
          print "You may not have permissions for all the files/folders you included"
          print "Would you like to continue (Y/N)"
          read -t 10 -n 1 options
          case "$options" in 
            "N")
            exit 2
            ;;
            "Y")
            break 2
            ;;
            *)
            exit 2
            ;;
          esac
        fi
      done
    fi
  done
fi


echo "Creating tar"
tar -cf $FOLDER/backup.tar $ITEMS

if [ "$?" -eq 2 ]; then
  echo "Tar creatinon failed"
else
  echo "$( ls -lh | awk '{ print $9, " is ", $5 }' )"
  tar -tvf "$FOLDER/backup.tar" > "$FOLDER/manifest"
  7z a "$FOLDER/$FILE_NAME" "$FOLDER/backup.tar" "$FOLDER/manifest"
fi

rm -f $FOLDER/backup.tar
if [ "$?" -eq 0 ]; then 
  exit $?
else
  echo "May not have sucessfully compressed"
  exit $?
fi