https://ftp.pmel.noaa.gov/ferret/pub/ia64-linux/previous_versions
├── [ 29 Sep 14 2009] fer_environment.v600.tar.Z
├── [ 28 Sep 14 2009] fer_environment.v61.tar.Z
├── [ 28 Sep 14 2009] fer_environment.v62.tar.Z
├── [ 29 Sep 14 2009] fer_executables.v600.tar.Z
├── [ 28 Sep 14 2009] fer_executables.v61.tar.Z
├── [ 29 Sep 14 2009] fer_executables.v62.tar.gz
└── [ 30 May 21 2010] fer_executables.v661.tar.gz
0 directories, 7 files