Simple bash script for searching keyword in the given directories linux

I find myself using grep over and over again for searching some keyword in the same directories. I write this, very simple and almost single usage script to accomplish the task

#! /bin/bash

# Find the given keywork in the given directories #

if [ $# -lt 1 ]; then
    echo $"No Keyword is provided"
    echo $"Usage: ./search_keyword.sh needle"
    exit
fi

keyWord=$1

#list where you would want to look inside the directory

directories="dir1 dir2 dir3 dir4 dir5"
for directory in $directories
do
    if [ -d $directory ]; then
        echo $"Serching in $directory"
        grep -ir --color $keyWord $directory
    else
        echo $"#### Directory $directory does not exist ####"
    fi
done

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