显示彩色字符的shell脚本

#!/bin/bash
#"Colorizing" Scripts
#First,define functions.
function subColor()
{
Fg=$1
Bg=$2
SetColor="\E[""$Fg;$Bg""m"
UseColor="\033[""$3""m"
EndColor="\033[0m"
Content=$e
echo -en "$SetColor""$UseColor"$Content"$EndColor"
}

function ShowHelp()
{
echo "Error!"
echo "Your parameters were $a,$b,$c,they are unexpected parameters."
echo "Show help file or continue?(h|c)"
read Choice
case $Choice in
    h|H)
        echo "This is a script for coloring characters and strings."
        echo "There are four parameters.Parameters are seperated by spacebars."
        echo "The frst parameter is a number ranged from 1 to 10,represents the foreground color."
        echo "The second parameter is  a number ranged from 1 to 10,represents the background color."
        Color 1 8 2 "1    red";echo
        Color 2 8 2 "2    green";echo
        Color 3 8 2 "3    yellow";echo
        Color 4 8 2 "4    blue";echo
        Color 5 8 2 "5    magenta";echo
        Color 6 8 2 "6    cyan";echo
        Color 7 8 2 "7    gray";echo
        Color 8 9 2 "8    white";echo
        Color 9 8 2 "9    white";echo
        Color 10 9 2 "10   black";echo
        echo "The third parameter is a number ranged from 1 to 9,represents the style of the characters."
        Color 10 8 1 "1    lighter,and bold";echo
        Color 9 8 4 "4    draw a line under the string.";echo
        Color 9 8 5 "5    coruscate the string.";echo
        Color 9 8 7 "7    swap the foreground color and the background color";echo
        Color 9 8 9 "9    draw a deleting line";echo
        echo "The fourth parameter is the content you wanna clolor,a string."
        echo "Thanks for using this script ! "
echo "Script halted."
exit 1
        ;;
    c|C)
        echo "script halted."
        exit 1
        ;;
    *)
        ShowHelp
esac
   
}

function ParaCheck()
{
if [ $a -le 0 ] || [ $b -le 0 ] || [ $c -le 0 ] || [ $a -gt 10 ] || [ $b -gt 10 ] || [ $c -gt 9 ]
then
    ShowHelp
else
    if [ $a -eq 10 ]
    then
        a=30
    else
        a=30+$a
    fi
    if [ $b -eq 10 ]
    then
        b=40
    else
        b=40+$b
    fi
fi
}

function GenString()
{
    e=""
    declare -i f=1

    for d in $@
    do
        if [ $f -eq 1 ] || [ $f -eq 2 ] || [ $f -eq 3 ]
        then
            e=$e
        elif [ $f -eq 4 ]
        then
            e=$d
        else
            e="$e $d"
        fi
        
        let f=$f+1
    done

}

function Color()
{
declare -i a=$1
declare -i b=$2
declare -i c=$3
ParaCheck
GenString $@
subColor $a $b $c $e
}
#Here is where the script begins.
Color $@



本文来自ChinaUnix博客，如果查看原文请点： http://blog.chinaunix.net/u1/53398/showart_419411.html