root下
export PACKAGESITE=ftp://ftp-archive.freebsd.org/pub/FreeBSD-Archive/old-releases/amd64/7.0-RELEASE/packages/Latest/
然后pkg_add -rv即可
不过还是修改root 根目录的.cshrc文件比较靠谱
setenv PACKAGESITE ftp://ftp-archive.freebsd.org/pub/FreeBSD-Archive/old-releases/amd64/7.0-RELEASE/packages/Latest/