##颜色
vi test.sh
#！/bin/bash
#description:test
function echo_color(){
if[ $1 == "green" ]; then
echo -e "\033[32;40mshell\033[0m"
elif [ $1 == "red" ]; then
echo -e "\033[31;40mshell\033[0m"
fi
}
echo_color red "hello"
function echo_color2(){
case $1 in
green)
echo -e "\033[32;40mshell\033[0m"
;;
red)
echo -e "\033[31;40mshell\033[0m"
;;
*)
echo "echo_color2 {green|red} string"
esac
}
echo -e "\033[32;40mshell\033[0m" ##32是颜色 40是背景
