git configuration changer bash shell

gitconf.sh

#!/bin/sh

param=$1
config="gurkan"
name="defaultname"
mail="defaultmail"

BLUE='\033[0;34m'
ORANGE='\033[0;33m'
GREEN='\033[0;32m'
NC='\033[0m'

echo "\n${ORANGE}---- current ----${NC}"
git config --global --list
echo "${ORANGE}---- current ----${NC}\n"

if [ "$param" != "$config" ]; then
    if [ "$param" != "" ]; then
         config="$param"
         name="$1"
         mail="$2"
    fi
fi

echo "${BLUE}---- new settings ----${NC}"
echo "new name : $name"
echo "new mail : $mail"
echo "${BLUE}---- new settings ----${NC}\n"

git config --global user.name "$name"
git config --global user.email "$mail"

echo "${GREEN}---- new ----${NC}"
git config --global --list
echo "${GREEN}---- new ----${NC}\n"