# I/O API 3.1 Installation **URL:** \ **Category:** I/O API\ **Created:** [February 13, 2019, 12:17pm UTC](https://forum.cmascenter.org/t/i-o-api-3-1-installation/514 "2019-02-13T12:17:44Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![solkim](https://avatars.discourse-cdn.com/v4/letter/s/8e7dd6/32.png) [@solkim](https://forum.cmascenter.org/u/solkim)\ **Post date:** [February 13, 2019, 12:17pm UTC](https://forum.cmascenter.org/t/i-o-api-3-1-installation/514/1 "2019-02-13T12:17:44Z")
I just download I/O API 3.1 version to install some module in HYSPLIT. and i followed I/O API installation guide to install I/O API. After installation process I got libioapi.a and some ‘\*.o’ files in Linux2\_x86\_64gfort directory which is represent my machine characteristics. here’s the question. Am i fully installed I/O API? Is the directory containing libioapi.a the I/O API library folder? ---
**Author:** ![cjcoats](https://avatars.discourse-cdn.com/v4/letter/c/ac8455/32.png) [@cjcoats](https://forum.cmascenter.org/u/cjcoats)\ **Post date:** [February 13, 2019, 7:05pm UTC](https://forum.cmascenter.org/t/i-o-api-3-1-installation/514/2 "2019-02-13T19:05:34Z")
You should also have various M3TOOLS programs in that directory. If so, it sounds as though you have a full installation. ``` Carlie J. Coats, Jr., Ph.D. cjcoats@email.unc.edu Senior Software Engineer I/O API Author/Maintainer Center for Environmental Modeling for Policy Development, UNC Institute for the Environment www.ie.unc.edu 100 Europa Dr., Suite 490 Rm 4051 / Campus Box 1105 919.843.5951 Chapel Hill, NC 27599-1105 Fax 919.966.9920 ```