#!/bin/bash
#===========================================================
# fhghost.sh    FastHandle Grep Host
#
# How to use
#    fhgh.sh  "*"  hosts/xxxx    <- like grep PATTERN FILE
#    fhgh.sh  PATTERN FILE       <- like grep PATTERN FILE
#
#===========================================================

case "$1" in
    -a | --all | -t | --test | -v )
        FLG="TRUE"
        shift
        ;;
    -h | --help )
        echo  "Exxample:"
        echo  "fhgh.sh  PATTERN FILE"
        echo  "fhgh.sh  "*" FILE"
        exit 0
esac


PATTERN="$1"
FILE="$2"

if [ "$FLG" = "TRUE" ]; then
    grep -Ev "^#|^$" "${FILE}"  | grep -E "${PATTERN}"
else
    grep -Ev "^#|^$" "${FILE}"  | grep -E "${PATTERN}" | awk {'print $1'}
fi


exit 0

Top#Preparation