Hello, I'm using FreeBSD 10.1-RELEASE-p23 and keychain can not invoke gpg-agent - see: https://github.com/funtoo/keychain/issues/41 so it seems that keychain has problem with FreeBSD's 'ps' command syntax or something?
After trying to debug keychain script under /bin/sh as well as fish-shell, I get syntax error in #848: *\ @(SHA256|MD5):[0-9a-zA-Z\+\/=]*) /usr/local/bin/keychain: 848: Syntax error: "(" unexpected (expecting ")")
Fixed in 2.8.1 https://github.com/funtoo/keychain/commit/6052ce29af20d237f6fe6f044e9f4110e053c763