This directory (and version of CentOS) is deprecated. For normal users, you should use /7/ and not /7.5.1804/ in your path. Please see this FAQ concerning the CentOS release scheme: If you know what you are doing, and absolutely want to remain at the 7.5.1804 level, go to for packages. Please keep in mind that 7.5.1804 no longer gets any updates, nor any security fix's.