Здесь могут водиться... волки

#!/bin/bash

#testping
# $1 - IP or URL address

ping $1 -c 3 >/dev/null 2>/dev/null
if [ $? -eq 0 ]; then
    echo "Pinging!"
else
    echo "Not pinging!"
fi

if [ -t 1 ];then
	E__="\x1b[${FGROUND[$2]}m"
	if [ -n "$3" ];then
		E__="$E__\x1b[${BGROUND[$3]}m"
	fi

	if [ -n "$4" ];then
		E__="$E__\x1b[$4""m"
	fi

	echo -e "$E__$1\x1b[0m"

else
	echo "$1"
fi

if [ -t 1 ];then	
	...
	echo -e -n "$E__$1\x1b[0m"

else
	echo -n "$1"
fi

echo -e "Foreground color:\tBackground color:"

for N in {0..16}; do
    if [ $N -eq 1 ];then #foreground
	echocn "$N - ${NAMES[$N]}" $N 4
    else
	echocn "$N - ${NAMES[$N]}" $N
    fi
    echo -e -n "\t\t"
    
    if [ $N -le 8 ];then
	if [ $N -gt 1 ];then
	    echoc " ${NAMES[$N]} " 1 $N #background
	else
	    echoc " ${NAMES[$N]} " 0 $N
	fi
    else
	echo
    fi
done
echo
echocn "Default" 0 0 0; echo -n " "
echocn "Bold" 0 0 1; echo -n " "
echocn "Understrike" 0 0 4; echo -n " "
echocn "Inversing" 0 0 7; echo -n " "
echo
echo

if [ -t 1 ];then
    echo -e "\x1b[32;1mRun in terminal\x1b[0m"
else
    echo "Run in pipe"
fi

echoc() #Text, color, background, attributes
{
    ...
         Тут будет код
    ...
}

if [ -z "$2" ];then
	echo "$1" 
	return 
fi

if [ -n "$3" ];then
	E__="$E__\x1b[${BGROUND[$3]}m"
fi

if [ -n "$4" ];then
	E__="$E__\x1b[$4""m"
fi

echo -e "Foreground color:\tBackground color:"

for N in {0..16}; do
    if [ $N -eq 1 ];then #foreground
	echocn "$N - ${NAMES[$N]}" $N "16"
    else
	echocn "$N - ${NAMES[$N]}" $N
    fi
    echo -e -n "\t\t\t"
    
    if [ $N -gt 1 ];then
	echoc " ${NAMES[$N]} " 1 $N #background
    else
	echoc " ${NAMES[$N]} " 0 $N
    fi
done