Colorized online/offline checker in bash

Kora reggeli agymenés....

 #!/bin/bash
# Text color variables
txtund=$(tput sgr 0 1)  # Underline
txtbld=$(tput bold)    # Bold
txtred=$(tput setaf 1)  # Red
txtgrn=$(tput setaf 2)  # Green
txtylw=$(tput setaf 3)  # Yellow
txtblu=$(tput setaf 4)  # Blue
txtpur=$(tput setaf 5)  # Purple
txtcyn=$(tput setaf 6)  # Cyan
txtwht=$(tput setaf 7)  # White
txtrst=$(tput sgr0)    # Text reset
HOST=IP_ADDRESS
ERTEK=`ping -q -c 4 $HOST | grep "round-trip" |sed 's/\// /g' | awk '{print $8}' | awk '{printf("%d\n",$1 + 0.5);}'`
if [ "$ERTEK" = "" ]; then                                                                                                                                                                                                                  
ERTEK=-1                                                                                                                                                                                                                                    
fi  
if [ $ERTEK -ge 0 ]; then
echo "${txtgrn}online${txtrst}"
else
echo "${txtred}offline${txtrst}"
fi