gyk_grep script

#!/bin/bash

# Checking file if it was given:
if [ -z ${1} ]; then echo "File was not given!"; exit 1; fi
if [ ! -f ${1} ]; then echo "File (${1}) could not be opened!"; exit 1; fi

# So at this point we know we have a valid file to search in.

# Reading pattern from standard input:
echo "Add meg a honapot"
read i
if [ -z ${i} ]; then echo "Pattern was not submitted."; exit 1; fi

# If both the file and the pattern are given, let's grep:
grep  -iw ${i} ${1}