Add a custom text header to you code files

HeaderGenerator.sh

headerFile="header.txt"
fileExt=".java"

red=`tput setaf 1`
green=`tput setaf 2`
cyan=`tput setaf 6`
yellow=`tput setaf 3`
reset=`tput sgr0`

function main () {
    echo "${cyan}----------------------------------------------------"
    echo
    echo "Header generator (Made by Célian Riboulet)"
    echo
    echo "----------------------------------------------------"
    echo
    echo "${cyan}Looking for $fileExt files :"
    echo "${green}- Generate [g]"
    echo "${red}- Clear [c]${reset}" 

    read input

    if test "$input" = "g"; then
        echo
        echo
        echo "${yellow}Adding this header to all $fileExt file in the project !"

        cat $headerFile
        echo
        echo "${reset}Adding headers ..."

        for file in $(find ./ -name "*$fileExt"); do
            if test "$(cat $file | head -n 1)" = "$(cat header.txt | head -n 1)"; then
                echo "${yellow}[!] Header already found in $file"
            else
                cat $headerFile | cat - $file > temp && mv temp $file
                echo "${green}[OK] Adding in $file"
            fi
        done

    elif test "$input" = "c"; then

        echo "${yellow}Removing all headers ..."
        headerSize=$(wc -l < $headerFile)
        for file in $(find ./ -name "*$fileExt"); do
            if test "$(cat $file | head -n 1)" = "$(cat header.txt | head -n 1)"; then
                echo "$(tail -n +$headerSize $file)" > $file
                echo "${green}[OK] Removing in $file"
            else
                echo "${yellow}[!] No header found in $file"
            fi
        done

    else
        echo
        echo "${red}ERROR : unkown action..."
        main
    fi
}

main

echo
echo "${green}done !"
echo