Hi Amit.
> Hi Is there a way to download an open-source and change it to customize? We > need to download the Ghost script and try to rename one of the function > eps2write as epswrite (deprecated version) for our legacy programs to be > compatible with the newer version of ghost script In the middle releases, > the epswrite device was renamed as eps2write causing us to not being able > to upgrade to latest version That's perfectly allowed. As free software, you are free to adapt it to your needs and to use and/or distribute the modified versions. See https://www.gnu.org/philosophy/free-sw.en.html