[Shell] Zips a file - To be used with Automator to create a short cut for the task

autozip.sh

#! /bin/sh

INFILE=$1
ZIP=".zip"
OUTFILE=$INFILE$ZIP

if [ -f "$INFILE" ]; then
    echo "Compressing file: $INFILE"
    COUNTER=0
    while [ -f $OUTFILE ];
    do
	COUNTER=$((COUNTER+1))
	OUTFILE="$INFILE$COUNTER$ZIP"
	#echo "calculating...      $OUTFILE"
    done
    echo "Output path: $OUTFILE"
    zip $OUTFILE $INFILE
    exit 0
else
    echo "No file at path: $INFILE"
    exit -1
fi